Rex Hungerford, Edward DeVito, and Craig Bradley rode into town last week and worked with Garth Powell of Audioquest to solve all the electrical problems that have plagued my audio system for years.

Garth Powell is a name familiar to many Stereophile readers. He is the power expert of AudioQuest and the designer of the Niagara series of power conditioners; he is also responsible for the company's AC and signal cables. Bradley is a local electrician and audio enthusiast. He has done electrical work for me in the past, including replacing a dedicated line with one wire-one for low-power signal components and the other for amplifiers, hoping to solve years of annoying problems. Hum and other noise issues. You might think that the ground potential between two adjacent AC jacks on the same circuit is almost zero, but the ground potential between the jacks is still abnormally high, and the buzzing sound has not disappeared.

I have tried many times to troubleshoot and fix my ground loop problem; once, I even asked a highly regarded New York City studio technical wizard for help. But I put the problem on hold until for reasons unrelated to audio performance, I installed a backup generator (footnote 1). The switch inserted in the line damaged the sound so that the audio equipment could not be checked. As Powell said, it is "the straw that breaks the camel's back".

Two PS Audio Power Plant AC regenerators passed me, one P15 and one P20-thank you very much for the loan from PS Audio. But the regenerator just covered up the problem; I needed a "complete" solution, no puns.

Last winter, Hungerford and DeVito emailed me and read about my electricity problem in a previous column. They offered to fly over from their base camp in the Seattle area to investigate.

Hungerford is a master electrician licensed in Washington State. DeVito has commercial fishing operations in Alaska and Maine, and is also a high-performance audio distributor specializing in power-related products, including his own Audio-Ultra Performance series of power distribution boxes. Both are avid enthusiasts. Both are obsessed with the quality of electrical infrastructure and are eager to spread the gospel of electrical upgrades.

Although the two collaborated on my project and may occasionally collaborate again ("somewhat like Mick and Keith," DeVito joked), they later told me that they had started to operate independently; for their contact information, see footnote 2. .

When emailing to Hungerford and DeVito, I had arranged a bypass switch with my auxiliary generator contractor, from the meter box to a new dedicated sub-panel in the utility room adjacent to my listening space. This setting will bypass the transfer switch and the rest of the wiring in my house. Win-win, I think.

During that late winter visit, Hungerford inspected the property and inspected the electrical infrastructure inside and outside the house, starting from my roof, from the transformer across the street to the Rockland power line connection to the mast extending from the side of the house . A recently installed "smart" electric meter that supports Wi-Fi. "The wires are rubbing on the roof," he shouted from the ladder. "This is not good!" Subsequent inspection showed no obvious wear.

The electric meter is new, but everything outside is old. Hungerford removed the meter box cover and pointed out the severely corroded aluminum mast wires and corroded clips when the house was built nearly 50 years ago (for a family named Kuzma; Frank commented in an email Say, this may be relevant). The old instrument box clamp has only one ridged contact point. Hungerford said: “All the electricity in your home first passes through the corroded ridge of the clip. Don’t you think you heard it?” He also pointed out the uncovered outdoor AC outlets, which he said may be when wet. "Sparks" will be generated; this will also generate line noise.

Hungerford inspected the work of the auxiliary generator system contractor and announced that it was doing very well, which is exactly what I think he would find out, because the same people replaced our heating and air-conditioning systems ten years ago, And it works great. "Of course, it conforms to the code, which is a very good job, but the code is not enough to meet our needs," Hungerford said, which happens to reflect what Powell told me earlier.

"What are we pursuing?" I asked shyly. Well, I can try this: Hungerford and DeVito both suggested that my power company Rockland Electric replace the pole transformer across the street, which serves my family and about six other people, and replaces me with a heavy-duty transformer and is willing to pay. DeVito said that he had persuaded his power company to do so, but because my power company was replaced in the past ten years — and because success seemed out of reach — I decided not to ask Rockland to replace the transformer.

The new meter box minus the new copper wire, below is the new main circuit breaker box.

With the rejection of this idea, Hungerford began the layout, starting with the replacement of the all-copper wire (mast) to a new meter box (footnote 3). He pointed out sloppy ground connections, including crimping connections that combine aluminum and copper—he said this is an absolute no-no. He noticed a few small ground rods close to the foundation, and he didn't like seeing these ground rods either. When he completed the general outline of the plan and some fascinating details, I said to him and DeVito: "If I call my contractor, he provides a carefully considered Plan and tell him all of this, I can tell you what his reaction is. He will say,'Are you fucking kidding me? I won't do that!'" All of this is handled by Garth Powell of. He was impressed and had some other ideas. He asked me to help him contact Hungerford.

Hungerford’s vitality and enthusiasm for this subject reminds me of Powell. They are on the same page. For two days, Hungerford only wanted to talk about electricity. Let Powell begin, he can only do so. When I tried to change the subject-at some point, understanding what else inspired Hungerford's enthusiasm-the conversation immediately returned to the grid or grounded or electricity-based war stories. Fortunately, I like obsessed people. Go to figure it out.

I am a little worried about their two teams working together. I expect one of two results. Either Hungerford and Powell will get along well, Hungerford will combine some of Powell's ideas to get better results, or there will be a high-pressure discord that accompanies the explosion of thermonuclear thinking.

Powell offered Hungerford some ideas he-Hungerford-liked very much. Hungerford allowed Powell to benefit from his field experience, which helped to develop a more practical game plan.

A few days after Hungerford and DeVito flew home, I submitted a conceptual version of the new plan to the contracting company Air Group.

I received a call from the person in charge of the electrical department, and I have dealt with him several times over the years. Our conditions are very friendly. After reviewing the plan, he replied that I quoted: "Are you fucking kidding? We won't do that!"

However, Bradley is absolutely willing, and his participation is consistent with the business habits of Hungerford and DeVito. After making the plan, the client hires a licensed electrician to complete the work, and Hungerford or DeVito (or a member of the DeVito team) is responsible for supervision.

On April 1, Hungerford sent an ultra-detailed plan to bypass the transfer switch, which included replacing the existing electrical service with a new copper mast, from a roof utility strike to a new meter distribution box.

New indoor utility room sub-panel.

The new 3R panel (footnote 4) installed directly under the meter box will become the new main switchboard of the house. Panel power supply. Both panels will now become sub-panels.

A new copper feeder branch will pass through the PVC conduit on the side of the house, from the 3R box to the utility room, to a new sub-panel containing four 20A branch circuits dedicated to the audio system (footnote 5). In other words, the new feeder branch will only serve the audio system, and completely bypass the noisy household electrical infrastructure, including air conditioning, pool pumps, heating and hot water systems, Internet and cable TV. Of course, it will also bypass the transfer switch and generator system, which was the original goal.

Footnote 1: In the simulation corner #307, I wrote, “After many years of frequent power outages due to wind and blizzards, we decided not to power off. Gasoline generators are a great pain in heavy snow. We—I "My wife and I bit our heads and ordered a 22kW natural gas generator. A few days ago, workers came to install it. "For more information on the story, see AnalogCorner #308.

Footnote 2: Rex Hungerford: Website: kingrexelectric.com. Ed DeVito: Website: audio-ultra.com. AudioQuest: Website: audioquest.com. Bradley Electric Inc. (New Jersey residents only) craig.bradley@verizon.net.

Footnote 3: The following description is for reference only. All electrical work described here is coded by a licensed electrician.

Footnote 4: The name "3R" indicates that the enclosure has passed the certification of the National Electrical Manufacturers Association (NEMA), which can provide protection for the junction box and junction box against rain, sleet, snow and external icing outdoors. There is a gasket seal.

Footnote 5: My utility room now has two panels. The new one only applies to my hi-fi system and the home theater system upstairs.

Log in or register to comment. Thank you very much.. MatthewT submitted on October 19, 2021-11:29 AM. Looking forward to reading this article. The comments will be interesting. Log in or register to post a comment and watch the video. I submitted it by CG to watch the video on October 19, 2021-11:45am. I can't help but admire the professionalism of everyone involved. Except for Fremer, I mean "Freamer", of course... ~~~~ https://centralindianaaes.files.wordpress.com/2012/09/indy-aes-2012-seminar-w-notes-v1-0 .pdf This easy reading provides some additional insights into what Mikey wrote, written by people who are not related to this particular project. It does not solve the problem of unwanted signals above the audio frequency band too much, so as they said in the past, this is an exercise for the reader. For core objectivists who may be reading this article, I will notice that if you are interested, you can actually measure most of the impact. The next time you log in or register to post a comment, it was submitted by thatguy on October 19, 2021-1:29 PM. I hope I will go to school to become an electrician. Such an excellent job is really cool. Next login or register to comment. Submitted by jcanavari on November 1, 2021-2:33 PM I agree to log in or register to comment. Does a 92-year-old man hear any difference? Measured in order... Archimago submitted on October 19, 2021-2:41 pm "Moving the home theater circuit to the new sub-panel produced a profound improvement; even my 92-year-old mother-in-law with hearing impairment heard it It." If this is the case, if in fact it is true and not some confirmation bias, I would salivate to obtain a measure of this level of improvement. If hearing-impaired people can perceive this, then obviously it must be very quantifiable. What are the equipment in the home theater system we are talking about? What improvements did the 92-year-old hear? (Noise? Frequency expansion?) For this dramatic improvement, modern, technologically savvy, and discerning enthusiasts should really seek proof that this is correct to some extent, so that we can understand which devices actually get Improved (DAC? Amplifier?), and the magnitude of improvement. Then we may be able to understand what the problem is (ie it must be a ground loop? 60Hz buzzing? The DC offset affecting the amplifier has been fixed? The amplifier distortion is reduced when playing loudly? etc...) and whether the improvement shown is true If we live in an old house that may need this kind of electrical work, the effort is worth the effort. Log in or register to post a comment too late! ChrisS on October 19, 2021-4:45 pm The measurement should be submitted before the completion of the work, and then after the completion of the work... Q: Ma! Answer: what? Are you talking to me? Q Yes, I am talking to you! Who else? What did you hear Answer: what? Are you talking to me? What did you just ask? Question: Yes, I am talking to you! What did you hear Did you hear the music? Answer: what? What music? Wait to log in or register to post a comment. Thank you for your question! Submitted by Michael Fremer on October 19, 2021-4:55 pm Actually what we did was, we asked her to sit down for a three-hour double-blind audio test. A is the old electricity, B is the new service, and X is "Oz and Harriet". Can she hear the difference "blindly"? What is more important is to distinguish between Ozzie and Harriet. Unfortunately, she got rid of the pressure after only four hours. In fact, what happened was that we watched TV with her once a week and had dinner together. We have been watching The Crown, and she needs closed captioning to understand what is said at the specific level of Marantz AV8801 driving Parasound A-51 power amplifier. The speakers are Joachim Gerhard's 5.1 and Adam Audio subwoofers. After the upgrade, we watched an episode with the same SPL level. At first I forgot to use closed captioning, but she said that she had no problem understanding the dialogue. You can hear clearer sound without measuring and the sound system has been greatly improved. improve. Of course, if you don't listen to your suggestions, who will know what? But it was much easier for her to hear the dialogue, and I also heard improvements, just like I did in the listening room, I didn't have to turn up the voice so loudly, and I could hear the sound picture farther away. I realize that unless I provide evidence and satisfy you, nothing I claim can be worthy of your attention. I fully accept this and I will not care. PS: If you really read this article that you obviously haven’t read, or watched the video, you will know that there is a terrible ground loop problem among other hearing problems that I have been dealing with for years. These problems finally It's resolved. Log in or register to post a comment Heh Submitted by JHL on October 20, 2021-5:11 AM Subjective objectivist-an almost indivisible relationship-hypothesize, then assert, then predict everything can be measured . We have all heard that: "If it is audible, it can be measured" is a dogmatic model. Well, no. This is a far-fetched theory, which evades practical application. In any case, it is then up to the target subjectivist-and his objective exploration-to refute, the logical inversion. Very good reply. Don't be captive. Log in or register to post a sad comment submitted by thatguy on October 20, 2021-8:57 AM This is just another example of how people are so nervous and ready to attack that they don't bother to accept information. If we can listen and understand what is being said, instead of immediately using all our brainpower to form what we want to say next. Solving power problems is completely different from trying to improve a good power supply in any form. However, it has met with opposition just as some people say that their perfect and quiet equipment on a well-set electrical system is made better by performing magic dances. Log in or register to post a comment "The second ground rod will be installed 20 feet from the first ground rod" Submitted by Jack L on October 23, 2021-12:42 PM. Whether not. The ground rods are placed in order to reduce the ground impedance. All ground rods must be finally connected to the ground cable of the step-down transformer at the entrance of the street postal service. This is the NEC code, used to save lives in the event of lightning. I read a horse story report about the remote grounding of audio equipment in the demo room in the audio program. In order to reduce ground noise, the staff in the demo room were too "smart" to insert the remote ground rod into the ground for the grounding of the demo audio equipment. But this is a dangerous behavior that violates the NEC code. Later, the audio program manager discovered and corrected it. The "too smart" demo kid was fired immediately! ! Jack L Log in or register to comment on copper and aluminum inlet cables Charles E Flynn submitted on October 19, 2021-5:15 pm Why NEC no longer allows the installation of aluminum branch circuit wiring, but allows the installation of aluminum Is the line port cable allowed? So far, I haven't seen anyone use a torque wrench when making connections involving screws. Even if the torque is too large or too small, the resistance will increase. Log in or register to post a comment Aluminum submitted by hnphnp on October 20, 2021-9:04 AM My guess is that aluminum wiring even though it is a very good conductor, it needs to be properly terminated, otherwise it is possible The resulting high-impedance connection point overheats or arcs. Plus different metal contacts can cause galvanic corrosion... Many aluminum branch wiring jobs lead to failures or worse, fires, because homeowners often connect aluminum to copper without proper connectors or terminations. Knobs and tubular wiring were banned for the same reasons. It is safe until you connect to it incorrectly and then...Aluminum may be allowed to be used for the main feed anyway, because it is assumed that a licensed electrician knows how to connect and terminate it correctly, and does not It is allowed to be used on branch connections because (a) people don't know how to terminate or connect it correctly, and (b) most devices (such as sockets and switches) now only work with copper wires. Log in or register to post a comment on the Consumer Product Safety Commission on the hazards of aluminum branch wiring. Submitted by Charles E Flynn October 20, 2021-9:09 AM Thank you. I didn't realize the problem of the proper connector needed to connect aluminum to copper. From https://www.cpsc.gov/s3fs-public/516.pdf: Aluminum wiring US Consumer Product Safety Commission (CPSC) staff and other government officials have investigated multiple hazards involving aluminum branch circuit wiring across the country Accidents and fires. A nationwide survey conducted by the Franklin Institute for CPSC revealed that houses built before 1972 with aluminum wiring had one or more electrical connections at the sockets to achieve “fire hazard conditions”1. 55 times that of houses with copper wiring. The survey only included wire connections at sockets. It does not solve other types of aluminum wire connections and joints that are also prone to failure in the home. There is no information on the development of aluminum wire houses built after 1972. The fire hazard investigated by the US Consumer Product Safety Commission occurred at the junction of aluminum wires, including sockets or switches and junction boxes; or the hazard occurred at major electrical appliances, including dishwashers or furnaces, for example. There are several degradation processes in the aluminum wire connection, which will increase the resistance to the flow of current, thereby causing damage to the cumulative effect. When current flows in the circuit, the increased resistance can cause overheating, sometimes reaching dangerous levels. Log in or register to post a comment on'ALUMINIUM WIRING' Quoting Charles Flynn. Jack L will submit Hi on October 20, 2021-6:18pm. Whether you like it or not, long-distance overhead high voltage (700Kv -130KV) power transmission is generally made of steel reinforced bare aluminum cables. Aluminum is used because it is much lighter than copper, and compared with copper, it has the ability to resist weathering and corrosion. Therefore, a lot of money was saved in the construction of power cable towers and the replacement/maintenance of aluminum cables. Jack L Log in or register to post a comment. Reply: "Aluminum Wiring" quotes Charles Flynn. Submitted by Charles E Flynn on October 20, 2021-6:22 PM, thank you. If the transmission cable is copper wire, we may see some very stupid theft attempts. Log in or register to post a comment "The transmission cable is copper", qtd ​​Charles Flynn submitted by Jack L on October 21, 2021-2:08 pm Hi, copper? no way. It's much more expensive than aluminum, not to mention the weight of copper and it's easy to be stolen. By the way, overhead power transmission is part of my job description. I still remember that many years ago, I received a call from an on-site engineer from a local hydropower company asking for urgent help to solve the local power outage problem! The overhead power line from the substation to the local distribution network is broken due to high winds or other reasons! ! Therefore, miles of steel reinforced bare aluminum cables (ACSR) must be replaced urgently to restore power to the affected area as soon as possible. What type of cable am I asking? ? The answer I got was: "I don't know!!" Frankly speaking, I wouldn't be surprised that so-called engineers don't know at all. So I asked for a sample of a shorter down cable. I received it by courier within an hour. I measured the diameter and number of conductors of the aluminum cable, and then cross-referenced it with NEC specifications. I see. I know where to find this "bird" cable from the warehouse inventory (all ACSRs have a bird code). This is my expertise and it is very valuable for immediate resolution of interruptions. Early the next morning, a thousand-mile-long replacement grid overhead power cable was on site. Of course, I made some money for my company to provide such urgent services. Jack L Log in or register to post a comment reply: "The transmission cable is copper", qtd ​​Charles Flynn Submitted by Charles E Flynn on October 21, 2021-2:20 pm Thank you for providing an interesting story, and there A happy ending. The right person appeared in the right place at the right time. Log in or register to post comments Upgrading power is so important. It is important for me that daveyf submitted this article on October 19, 2021-5:40 pm. A few years ago, I encountered a similar problem with MF. My electrical contractor recommends upgrading and including street transformers (as suggested for MF). This is what we did, installed a new transformer, new 500 amp wiring from the transformer to the new junction box, all new ground rods, and then connected the dedicated and isolated wiring to my room. The contractor showed me the connections of the old transformers, and surprisingly they passed the current completely! To say that this upgrade is expensive is an understatement because we have to dig the streets and driveways of my property to install new lines. However, as MF found, the increase in SQ is also very impressive, and worth it for IMO. Log in or register to post a comment "Upgrade and include street transformers" qtd daveyf Submitted by Jack L on October 23, 2021-12:00 PM Hi, it all depends. If it is an independent single-family house with no other houses adjacent to it, then replacing the existing pole transformer for your house should not be a problem. But if it is a busy city street and houses are close to each other, then the step-down 120 120V transformer is usually shared with two adjacent houses. So the replacement of that transformer requires the consent of the neighbors. Jack L Log in or register to post a comment. Replace the street transformer daveyf on October 26, 2021-7:27 PM Submitted to Jack, my house is independent, not on a busy street, there is only one adjacent family sharing the transformer. . And yes, the neighbor did agree (why not, because I am paying the bill). The new transformer is an upgraded version with its own isolation box installed on the isolation base. (Not on the pole). The copper connector of the old transformer (approximately 20 years old) has been corroded, and the connector of the new model is a brass insulated connector. All of these must be allowed and installed by the electric company. As Mikey pointed out, it must be borne by you. Log in or register to comment deleted. Jack L submitted on October 23, 2021-12:01pm.. Login or register to comment. P20 Masking Issue?? tonykaz on October 19, 2021-5:41 PM Not submitted Due to a defect in your Power Systems, your comments are suspected. PS Audio P20 does not cover up your problems, it proves that you have been living with unrevealed problems. All these sensitive audio devices require a well-designed electrical system that can be regularly inspected for performance degradation. Computer equipment may need to be isolated. When you made a bargaining generator system, you started a defect compound. Appropriate generator systems, like those used in industry, are specific designs that can achieve a given level of performance. The homeowner system is a cheap basement noise maker. Just invest in a Honda generator hidden in the garage (if you have one) and you can avoid considerable anxiety. Your power system looks a bit like hours. Beginners should be 220V. Tony log in or register in Venice, Florida to comment on LOL... Submitted by MatthewT on October 19, 2021-5:59 pm, I know what you will post as soon as I read this article. Log in or register to post a comment LOL.... tonykaz submitted on October 19, 2021-6:06 pm I am an electrical engineer! My company, General Motors Detroit Diesel Division. It is a major supplier in the stationary power plant industry. This is not an emotional Laughing question. But it seems...you can't reason based on facts, so you made a mockery. Tony Log in or register in Venice, Florida to post a comment. Your comment was submitted by Michael Fremer on October 20, 2021-8 AM. Don't read my comment. Log in or register to post comments. Stupidity is an emotional comment. tonykaz submitted on October 20, 2021-9:24 am You have not yet demonstrated, described or revealed any basic elements of establishing and maintaining a reliable instrument-level electrical system. You spend a lot of money to create chaos. (Sufficient for washing machines, and may comply with local fire codes) Tony of Florida Log in or register to comment as an electrical engineer does not make you an expert October 28, 2021-8:09 am by bike rider 1001 submitted or very attentive. Picture #2 clearly shows a 220V system. There are two hotspots, a neutral point, and the ground away from the water droplets, towards the house. Figure #3 shows a SUB panel, which is clearly connected to only one branch of the system. I assume (yes, I know what the hypothesis means) that all electrical components share the same 110V branch, thus eliminating any problems that may arise in a system using two different branches. Log in or register to post a comment. Daydream submitted by partin on October 20, 2021-5:09 am. I don’t know much about the power grid. It is very likely to be on the left, but if it is me, I will try the system completely with The grid is separated, except for charging, based on Tesla Powerwall batteries or something similar. When you use hifi, completely disconnect from the grid and use quality rectification, if that is the term. How can that kind of energy be unclean and stable? Log in or register to post a comment. The expert submitted by Michael Fremer on October 20, 2021-8:55 am said that the inverter required to convert the battery's DC to AC creates various problems...same as solar...so That's it.. Login or register to post a comment. Submitted by parta on October 28, 2021-1:01 PM Login or register to post a comment "A system completely separated from the grid, except for charging" Jack L on October 2021 March 20-6:03 PM Submit Hi Bingo! This is why I installed a 500A car battery to power the dual triode heater of the phono circuit stage I designed/manufactured. Except for charging, it is 100% electrically isolated from the grid power supply. Pure DC hours and hours of music listening! Jack L Log in or register to post a comment Back to the future! Submitted by Robin Landseadel on October 20, 2021-4:51 PM. So it is safe to say that your electrical system has been severely messed up before this renovation. Should we ignore all your previous comments here? Log in or register to post a comment Smooth talk MF wrote me a personal.... Submitted by tonykaz on October 20, 2021-6:28 PM.... Attention asks me to do his engineering work for him or STFU! ! ! He claimed that his comment was directed at the owner. I don't care about Mr. MF! I am reacting to the status and the arrogance of the self-driven simulation initiator. Simulation is great for old-school schools that still tune synapses to Vinyl and (or not) adjust to format advances in the life and work of the entire rest of the audio and video world. I am a simulator, I own Vinyl and have been Analog since I was born. The recorded simulation is at best a reflection and deteriorating echo of the performer's performance. There has never been a recording or music system equal to live. It is a hopeful wish for a multimillion-dollar music system to play music from storage media. I hope that the novel will become something real, and it will never be. But...it produces dopamine release and acts as a mood-altering drug. This explains the never-ending quest for all these expensive equipment: equipment for music dopamine addicts. Ordinary people get excellent dopamine orgasms from fairly ordinary audiophile equipment. Then: Those medical personnel bought all the blue-emitting Macintosh equipment. This is the state chase. It pays the bills for the dealer network. Tony PS in Florida. PS Audio Powerplant is an instrument-grade device. Log in or register to comment "It pays for the dealer network" qtd Tony Jack L Submitted on October 23, 2021-11:43 AM Hi, that's true! However, if someone really understands this audio game like you do, you can save a lot of money. I may be one of the few audio experts who don't pursue famous brands. Frankly speaking, I switched from CD to vinyl only a few years ago, and my sound is much better than my CD/streaming media, which is now relegated to my second priority music source. However, I did not spend too much money on this conversion at all. Because I'm a DIYer, he knows how to get high-quality sound without spending money to fund famous brand suppliers. To listen is to believe in Jack L. Log in or register to comment. Dear Mr. Jack L, your confidence is well-deserved. Submitted by tonykaz on October 23, 2021-12:01 pm My God, Mr. Jack L, you have said everything. You are the Virtuoso creator of the music system. I like your comments and philosophy. Tony log in or register in Florida to post comments, Tony, welcome. Jack L will be submitted on October 23, 2021-12:04pm. Log in or register to post a comment I hate to say that but... Submitted by daveyf on October 20, 2021-8:39 PM I think most of the posters here have never heard of an upgraded power supply, including renewed Transformers and so on, it sounds like it! MF accurately describes this huge difference in SQ, so for those who have no similar experience, I will go out and try to listen to systems with this kind of "power upgrade"... and then come back and object, if you can ! ! Otherwise, maybe think that the power of your system is the most important, and the correct handling should be work1... IMHO. Log in or register to post a comment Mr.daveyf on AC Energy Supply tonykaz Submitted on October 23, 2021-12:33 PM You may or may not be right. My original home in Wi Manitowoc had limited energy supply, and then suddenly got an unannounced major improvement in energy delivery. Homes in Florida seem to use electricity as their only source of energy, so 220 volts can be used in the room. Audio equipment functions much better at higher voltages (I think). Newer homes seem to have applied a higher level of electrical engineering in their energy systems. Older houses may use aluminum wires and a large number of low-quality screw fasteners, and poor duplex sockets are a standard feature of these price-priced houses. All duplex sockets should be upgraded to prevent noisy connections in any of them. It should be said that Vinyl playback is fundamentally simple. I think playing music only requires 3 tubes and a moving magnet cartridge. The vinyl itself is quite noisy (in a pleasant way), so a little power noise won't be annoying. However... MSB and dcs people are angry with power noise, environmental noise, atmospheric noise, and noise generated by various computer chips. Digital music reproduction is more susceptible to these problems. Don't worry, (excessive): The entire civilized world is shifting from fossil energy to solar energy. A whole new series of questions are about to be before us. It all started with Ben Franklin flying a kite in France 250 years ago! Tony of Florida login or register to comment. The link to the YouTube video does not work. Charles E. Flynn submitted the link in footnote 8 of the YouTube video on October 25, 2021-6:56 AM, title Produced amazing sound effects for "major power upgrade under the roof"! "Does not work. It has "youtu.be". Log in or register to post a comment Thank you Charles; the link has been fixed. Submitted by Jim Austin on October 25, 2021-7:03 AM Beijing time. Log in or register to post Comments, you’re welcome, Mr. Austin. Charles E Flynn submitted on October 25, 2021-7:43 am Beijing time. Log in or register to comment on basic power remedies by amco2000 on October 27, 2021-3: pm 42 The submission said so much, so much time, and wasted so many dollars on trying to achieve high-quality isolated power supplies!!! I live in the "Wild West" power supply company in Peru, where the power supply company provides industrial-style Delta 3 Relative to domestic service, there is no neutral or ground wire, so everything is floating, noisy, and subject to dangerous voltage fluctuations. However, there is a basic, simple and obvious starting point, which is relatively Moderate cost drives 50-80% of all issues discussed: 1. Install a large rated isolation transformer (with electrostatic winding shield) to create a fully isolated with active, neutral and ground connections The power circuit, directly connected to the main power inlet distribution panel. 2. Connect the shield and ground connection of the transformer output to the newly tested independent ground rod. 3. Connect a good quality independent 3-wire cable (optional shield) to all audio- Video-Internet-Cable TV equipment power socket 4. In the case of coaxial connection to the Internet or cable TV, install a coaxial cable isolator (approximately $10 from Amazon) to maintain complete isolation, including the entire online AV system. 5 In the case of excessive power failure or power failure, you can optionally add a sine wave UPS with front computer quality adjustment. However, in these 21st century days, there is another simple solution, at least for homeowners Say so: This is a completely independent 1 kW or 3 kW emergency solar system circuit... You can also get incidental emergency benefits. Please note that the isolation transformer also provides protection against incoming spikes and sub-second ups and downs Important protection. I was really confused when reading such a novel $$$ solution legend written by a master expert of $$, but ignored such simple, basic and fundamental issues. Oh, well, I think that’s why Some people spend $1,000 on PS Audio Power Plants and "lost in a lost world", as the great Moody Bruce might say... PS:: An interesting comment from another reader: If suffering from this kind of pain is obviously a terrible power problem, all device reviews so far have been severely damaged-oops!!!!!!!!!!!!!!!!!!!!!!!! ???????? ???????????????? Log in or register to comment on Home AC Power -Noise in the sound system? Submitted by Timbo on Oz, October 28, 2021-10:35 PM I live in Australia, where the AC power standard is 230V (/- 10V) @ 50Hz, 10Amps. There are three cables on each power cord, one of which is GROUND. But-my turntable has a two-core power cord. There are also CDP, tuner and VHS-Hi-Fi VCR-I use them to record FM concerts. I did try once to use a large isolation transformer on the AC power supply, but it didn't make any difference. The main system is currently in bits, but it used to be and will remain very complex. QUAD 63s HP filter-asymmetrical with the LP filter of the subwoofer. I will use several 1/3 octave equalizers to precisely equalize the bass of each subwoofer-they will be in an array ala Duke le-Jeune. The only peak as the room response drops is rear-end collision. Be careful with a single ground cable, when something goes wrong, all three systems are now very quiet. One of them is used for HT and TV, it is in the family room/kitchen. This is not a big house, but it is "green" that I can do. It faces north, due east to west /-5 degrees. It's hard to resist! The best houses in the northern hemisphere face south. None of the three systems in my home have experienced any continuous AC power noise issues. Humph? Due to the long pre-amplifier cable placed near the power cord. LBNLeast / There was an 8-foot solid copper ground rod outside that hit the soil-after a week of wetting, I dug a hole. The FM and TV antennas and all three audio systems are grounded. Overkill? ! We got quite a lot of summer thunderstorms and lightning, so I took it seriously. Moreover, we are very close to the snow-capped mountains and also very close to the Great Southern Ocean, which can be windy. Lightning strikes are the main cause of bushfires here, and there are occasional fire storms. Therefore, the heavy-duty coaxial FM and TV cables have serial arresters, and I can open and replace the breaker diodes. Tim Bailey Log in or sign up to post a comment. I just went there myself. Stevens submitted my system from the street to reinstall it on October 28, 2021-12:49 am, and the entire house was rewired. The input power source must be buried in the ground, and then enter a box equipped with an instrument and an isolator through an armored pipe. The isolator must be fixed on the external brick wall. Then the supply enters the underground house, and the concrete is wrapped in three consumer units, in their own cabinets, as short as 3 meters. All cables connected to the subscriber unit pass through steel conduits. According to our regulations, a ground loop impedance of 0.49 ohms is unqualified and requires 0.35 ohms. I think my measured value is 0.19 ohms. I connected it as three single phases, the audio is powered by the power supply, otherwise it is only used for car chargers. There is also a dedicated cable for powering a single audio socket. It is also buried in concrete, and the drain cable is shielded and grounded. I don’t need any masters. I used a fully qualified electrician company. They also rewired the rest of the house and a new kitchen at a lower cost than Mr. Fremer. Log in or register to post a comment "Special cables for single sockets for audio" qtd Stevens Submitted by Jack L on October 28, 2021-10:14 AM Hi, all cables hidden in masonry/concrete must be in steel tubes Laying within. This is the General Electric code. You need a power line conditioner to filter out RFI/EMI-contaminated power lines that lead from the service entrance power line outside the house to the "single audio socket". Ideally, don't share any analog devices with any digital devices on the same power outlet or "outlet". Because once turned on, all digital devices will emit RFI/EMI noise into the power line, and then enter any analog devices that share the same power outlet/socket. I detected this type of RFI/EMI surge using a broadband EMI/power line noise digital meter. No kidding. This is why my dedicated power line is directly connected from my home's distribution board to 2 main circuits: one dedicated to analog circuits and the other dedicated to digital circuits. I have installed an RFI/EMI online filter for each circuit. So there is no longer RF noise "crosstalk". Jack L Log in or register to post a comment Universal code? Stevens submitted which universe on October 28, 2021-10:34 AM? In the UK, we bury cables indoors under concrete screeds in flexible plastic conduits. The power socket supplies power to the power conditioner with cross-contamination isolation function, with a pair of isolated sockets. The point is that getting the right power supply, especially for new or restored installations, should not require any audio experts, but only qualified and qualified electricians. My guy is a large-scale comprehensive hotel, and building a house is not rocket science. The only additional expense I incurred for audio purposes was approximately 100 feet of shielded cables with drains (NeoTech and Belden), which cost about $500, to provide 3 separate feeds for my audio, AV, and modem. Log in or register to post a comment "In the UK, we bury cables under concrete screeds indoors...Submitted by Jack L on October 28, 2021-2:15pm...Flexible Plastic catheter." qtd Stevens. Is it a British standard? How does the soft plastic pipe handle the load of concrete? The embedded concrete slab during construction should be made of rigid steel pipes. I have participated in many overseas large-scale commercial construction projects. When embedded in concrete, BS specifies rigid steel conduits for all wires! ! Jack L Log in or register to comment Yes...plastic Stevens submitted on October 28, 2021-4:45 PM https://www.tlc-direct.co.uk/Book/4.5.1. htm is related to heat, corrosion and unbending cables. Log in or register to post a comment "No need for audio master, but good for qualified electricians" Jack L submitted on October 28, 2021-2:28 pm, hello, yes and no! Yes, strictly speaking, for wires, a licensed electrical union does the right job. No, this is for audio and not for lighting. Therefore, audio knowledge is required to get the best sound from the wire. Therefore, my post above is about RFI/EMI power regulation, which is usually beyond the scope of a licensed electrician. Jack L Log in or register to post a comment Concete... Stevens on October 28, 2021-4:38 PM Like most places in Europe, the electrical standards in the UK are extremely strict. The standard floor construction here involves the substructure, membrane, 100mm insulation, and then you put heating, water, and wires on it, and cover the whole thing with approximately 125mm of concrete mortar. The heating and water pipes are all PVC these days. The cable I use has a good shield and drain wire. Local authorities will check everything in seconds as the work progresses. I have to rewire the entire house to get a certificate to be insured. My electrician knows the audio and provides my stereo from a stage that is completely separate from the rest of the house. Nowadays, electricians engaged in high-quality home installations do a lot of AV and professional installation work. They know what is needed, including power conditioning, which is what they want to accomplish in the consumer sector. They also know every letter of the electrical code, and I doubt that Mr. Fremer's masters know it, because they run an audio company instead of a full-time electrician. ? ? Fear! ! Log in or register to post a comment

Always look forward to reading this article. The comments will be interesting.

Watching the video, I can't help but admire the professionalism of everyone involved.

Except for Fremer, I mean "Frimer", of course...

https://centralindianaaes.files.wordpress.com/2012/09/indy-aes-2012-seminar-w-notes-v1-0.pdf

This light-hearted reading provides some additional insights into what Mikey has written, written by people who have nothing to do with this particular project. It does not solve the problem of unwanted signals above the audio frequency band too much, so as they said in the past, this is an exercise for the reader.

For core objectivists who may be reading this article, I will notice that if you are interested, you can actually measure most of the impact.

I wish I could go to school to be an electrician. It’s so cool to do a good job.

"Moving the home theater circuit to the new sub-panel produced a profound improvement; even my 92-year-old mother-in-law, who is hearing impaired, heard it."

If this is the case, if in fact this is true and not some confirmation bias, I would salivate to obtain a measure of this level of improvement. If hearing-impaired people can perceive this, then obviously it must be very quantifiable.

What are the equipment in the home theater system we are talking about? What improvements did the 92-year-old hear? (Noise? Frequency expansion?)

For this kind of dramatic improvement, modern, technologically savvy, discerning enthusiasts should really seek evidence that this is correct to some extent, so that we can understand the actual improved equipment (DAC? Amplifier?), and The extent of improvement. Then we may be able to understand what the problem is (ie it must be a ground loop? 60Hz buzzing? The DC offset affecting the amplifier has been fixed? The amplifier distortion is reduced when playing loudly? etc...) and whether the improvement shown is true If we live in an old house that may need this kind of electrical work, the effort is worth the effort.

The measurement should be done before, and then after the work is completed...

Answer: what? Are you talking to me?

Q Yes, I am talking to you! Who else? What did you hear

Answer: what? Are you talking to me? What did you just ask?

Question: Yes, I am talking to you! What did you hear Did you hear the music?

In fact, what we did was let her sit down for a three-hour double-blind audio test. A is the old electricity, B is the new service, and X is an episode of "Ozzie and Harriet". Can she hear the difference "blindly"? What is more important is to distinguish between Ozzie and Harriet. Unfortunately, she got rid of the pressure after only four hours. In fact, what happened was that we watched TV with her once a week and had dinner together. We have been watching The Crown, and she needs closed captioning to understand what is said at the specific level of Marantz AV8801 driving Parasound A-51 power amplifier. The speakers are Joachim Gerhard's 5.1 and Adam Audio subwoofers. After the upgrade, we watched an episode with the same SPL level. At first I forgot to use closed captioning, but she said that she had no problem understanding the dialogue. You can hear clearer sound without measuring and the sound system has been greatly improved. improve. Of course, if you don't listen to your suggestions, who will know what? But it was much easier for her to hear the dialogue, and I also heard improvements, just like I did in the listening room, I didn't have to turn up the voice so loudly, and I could hear the sound picture farther away. I realize that unless I provide evidence and satisfy you, nothing I claim can be worthy of your attention. I fully accept this and I will not care. PS: If you really read this article that you obviously haven’t read, or watched the video, you will know that there is a terrible ground loop problem among other hearing problems that I have been dealing with for years. These problems finally It was resolved.

The subjective objectivist-an almost indivisible relationship-assumes, then asserts, and then predicts that everything can be measured. We have all heard that: "If it is audible, it can be measured" is a dogmatic model.

Well, no. This is a far-fetched theory, which evades practical application. In any case, it is then up to the target subjectivist-and his objective exploration-to refute, the logical inversion.

Very good reply. Don't be captive.

This is just another example of how people are so nervous and ready to attack that they don’t bother to accept information. If we can listen and understand what is being said, instead of immediately using all our brainpower to form what we want to say next.

Solving power problems is completely different from any form of trying to improve a good power supply. However, it has met with opposition just as some people say that their perfect and quiet equipment on a well-set electrical system is made better by performing magic dances.

Multi-point grounding must be done in a discrete manner, otherwise it will be fatal.

Regardless of. The ground rods are placed in order to reduce the ground impedance. All ground rods must be finally connected to the ground cable of the step-down transformer at the entrance of the street postal service. This is the NEC code, used to save lives in the event of lightning.

I read a horse story report about the remote grounding of audio equipment in the demo room in the audio program. In order to reduce ground noise, the staff in the demo room were too "smart" to insert the remote ground rod into the ground for the grounding of the demo audio equipment. But this is a dangerous behavior that violates the NEC code.

Later, the audio program manager discovered and corrected it. The "too smart" demo kid was fired immediately! !

Why does NEC no longer allow the installation of aluminum branch circuit wiring, but allows the installation of aluminum entry wires?

So far, I haven't seen anyone use a torque wrench when making connections involving screws. Even if the torque is too large or too small, the resistance will increase.

My guess is that even if the aluminum wire is a very good conductor, it needs to be properly terminated, otherwise it has a high impedance connection point, which may cause overheating or arcing. Plus different metal contacts can cause galvanic corrosion... Many aluminum branch wiring jobs lead to failures or worse, fires, because homeowners often connect aluminum to copper without proper connectors or terminations. Knobs and tubular wiring were banned for the same reasons. It is safe until you connect to it incorrectly and then...Aluminum may be allowed to be used for the main feed anyway, because it is assumed that a licensed electrician knows how to connect and terminate it correctly, and does not It is allowed to be used on branch connections because (a) people don't know how to terminate or connect it correctly, and (b) most devices (such as sockets and switches) now only work with copper wires.

Thank you. I didn't realize the problem of the proper connector needed to connect aluminum to copper.

From https://www.cpsc.gov/s3fs-public/516.pdf:

The US Consumer Product Safety Commission (CPSC) staff and other government officials have investigated many dangerous incidents and fires involving aluminum branch circuit wiring across the country. A nationwide survey conducted by the Franklin Institute for CPSC showed that houses built before 1972 with aluminum wiring had one or more electrical connections at the sockets to achieve "fire hazard conditions"1. The possibility that copper wiring was used 55 times the housing. The survey only included wire connections at sockets. It does not solve other types of aluminum wire connections and joints that are also prone to failure in the home. There is no information on the development of aluminum wire houses built after 1972.

The fire hazard investigated by the US Consumer Product Safety Commission occurred at the junction of aluminum wires, including sockets or switches and junction boxes; or the hazard occurred at major electrical appliances, including dishwashers or furnaces, for example. There are several degradation processes in the aluminum wire connection, which will increase the resistance to the flow of current, thereby causing damage to the cumulative effect. When current flows in the circuit, the increased resistance can cause overheating, sometimes reaching dangerous levels.

Whether you like it or not, long-distance overhead high voltage (700Kv -130KV) power transmission is generally completed with steel-reinforced bare aluminum cables.

Aluminum is used because it is much lighter than copper and more resistant to weathering corrosion than copper. Therefore, a lot of money was saved in the construction of power cable towers and replacement/maintenance of aluminum cables.

Thank you. If the transmission cable is copper wire, we may see some very stupid theft attempts.

copper? no way. It's much more expensive than aluminum, not to mention the weight of copper and it's easy to be stolen.

By the way, overhead power transmission is part of my job description. I still remember that many years ago, I received a call from an on-site engineer from a local hydropower company asking for urgent help to solve the local power outage problem! The overhead power line from the substation to the local distribution network is broken due to high winds or other reasons! !

Therefore, miles of steel reinforced bare aluminum cables (ACSR) must be replaced urgently to restore power to the affected area as soon as possible.

What type of cable am I asking? ? The answer I got was: "I don't know!!" Frankly speaking, I wouldn't be surprised that so-called engineers don't know at all. So I asked for a sample of a shorter down cable.

I received it by courier within an hour. I measured the diameter and number of conductors of the aluminum cable, and then cross-referenced it with NEC specifications. I see.

I know where to find this "bird" cable from the warehouse inventory (all ACSRs have a bird code). This is my expertise and it is very valuable for immediate resolution of interruptions.

Early the next morning, a thousand-mile-long replacement grid overhead power cable was on site. Of course, I made some money for my company to provide such urgent services.

Thanks for an interesting story and a happy ending. The right person appeared in the right place at the right time.

This article is very important to me. A few years ago, I encountered a similar problem with MF. My electrical contractor recommends upgrading and including street transformers (as suggested for MF). This is what we did, installed a new transformer, new 500 amp wiring from the transformer to the new junction box, all new ground rods, and then connected the dedicated and isolated wiring to my room. The contractor showed me the connections of the old transformers, and surprisingly they passed the current completely! To say that this upgrade is expensive is an understatement because we have to dig the streets and driveways of my property to install new lines. However, as MF found, the increase in SQ is also very impressive, and worth it for IMO.

If it is an independent single-family house with no other houses adjacent to it, then replacing the existing pole transformer for your house should not be a problem.

But if it is a busy city street and houses are close to each other, then the step-down 120 120V transformer is usually shared with two adjacent houses. So the replacement of that transformer requires the consent of the neighbors.

Jack, my house is independent. It is not on a busy street. There is only one adjacent house sharing a transformer... Yes, the neighbor did agree (why disagree, because I am paying the bill). The new transformer is an upgraded version with its own isolation box installed on the isolation base. (Not on the pole). The copper connector of the old transformer (approximately 20 years old) has been corroded, and the connector of the new model is a brass insulated connector. All of these must be allowed and installed by the electric company. As Mikey pointed out, it must be borne by you.

Due to a defect in your Power Systems, your review comments are questioned.

PS Audio P20 does not cover up your problems, it proves that you have been living with unrevealed problems.

All these sensitive audio devices require a well-designed electrical system that can be regularly inspected for performance degradation.

Computer equipment may need to be isolated.

When you made a bargaining generator system, you started a defect compound.

Appropriate generator systems, like those used in industry, are specific designs that can achieve a given level of performance.

The homeowner system is a cheap basement noise maker.

Just invest in a Honda generator hidden in the garage (if you have one) and you can avoid considerable anxiety.

Your power system looks a bit like hours. Beginners should be 220V.

I know what you will post as soon as I read this article.

My company, General Motors Detroit Diesel Division. It is a major supplier in the stationary power plant industry.

This is not an emotional Laughing question.

...You can't reason based on facts, so you made a mockery.

What a silly comment on so many layers. Don't read my comments.

You have not demonstrated, described, or revealed any basic elements of establishing and maintaining a reliable instrument-level electrical system.

You spend a lot of money to create chaos. (Sufficient for washing machines, and may comply with local fire codes)

Picture #2 clearly shows a 220V system. There are two hotspots, a neutral point, and the ground away from the water droplets, towards the house.

Figure #3 shows a SUB panel, which is clearly connected to only one branch of the system. I assume (yes, I know what the hypothesis means) that all electrical components share the same 110V branch, thus eliminating any problems that may arise in a system using two different branches.

I don’t know much about the power grid, and it’s very likely to be on the left side of the field, but if it were me, I would try a system that is completely separated from the power grid, except for charging, based on Tesla Powerwall batteries or something similar. When you use hifi , Completely disconnect from the grid and use quality rectification, if this is the term. How can that kind of energy be unclean and stable?

It is said that inverters that need to convert battery DC to AC will cause various problems...same as solar energy...so that's it...

I suspect that a single conversion unit must be inherently better than countless distribution units and will abuse energy on the way to your home.

This is why I installed a 500A car battery to power the dual triode heater of the phono circuit stage I designed/manufactured. Except for charging, it is 100% electrically isolated from the grid power supply. Pure DC hours and hours of music listening!

So it is safe to say that before this transformation, your electrical system has been messed up. Should we ignore all your previous comments here?

.... Pay attention to asking me to do his engineering work for him or STFU! ! !

He claimed that his comment was directed at the owner.

I don't care about Mr. MF!

I am reacting to the status and the arrogance of the self-driven simulation initiator.

Simulation is great for old school schools that still tune synapses to Vinyl and (or not) for format advancement, where the rest of the entire audio and video world lives and works.

I am a simulator, I own Vinyl and have been a simulator since I was born.

The recorded simulation is at best a reflection and deteriorating echo of the performer's performance.

There has never been a recording or music system equal to live.

It is a hopeful wish for a multimillion-dollar music system to play music from storage media. I hope that the novel will become something real, and it will never be.

...It produces dopamine release and therefore acts as a mood-altering drug.

This explains the never-ending quest for all these expensive equipment: equipment for music dopamine addicts.

Ordinary people get excellent dopamine orgasms from fairly ordinary audiophile equipment.

Then: Those medical personnel bought all the blue-emitting Macintosh equipment. This is the state chase. It pays the bills for the dealer network.

Attachment: PS Audio Powerplant is a musical instrument level equipment

However, if someone really understands this audio game like you do, you can save a lot of money. I may be one of the few audio experts who don't pursue famous brands.

Frankly speaking, I switched from CD to vinyl only a few years ago, and my sound is much better than my CD/streaming media, which is now relegated to my second priority music source. However, I did not spend too much money on this conversion at all.

Because I'm a DIYer, he knows how to get high-quality sound without spending money to fund famous brand suppliers.

OMG, Mr. Jack L, you have finished talking.

You are the Virtuoso creator of the music system.

I like your comments and philosophy.

I think most of the posters here have never heard of your home's upgraded power supply, including everything from the new transformer, to what it actually sounds like! MF accurately describes this huge difference in SQ, so for those who have no similar experience, I will go out and try to listen to systems with this kind of "power upgrade"... and then come back and object, if you can ! ! Otherwise, maybe think that the power of your system is the most important, and the correct handling should be work1... IMHO.

You may be right, or you may not.

My hometown in Wi Manitowoc had limited energy supply, and then suddenly I got an unannounced major improvement in energy delivery.

Homes in Florida seem to use electricity as their only source of energy, so there is 220 volts in the room. Audio equipment works better at higher voltages (I think)

Newer houses seem to have applied a higher level of electrical engineering in their energy systems.

Older houses may use aluminum wires and a large number of low-quality screw fasteners, and poor duplex sockets are a standard feature of these price-priced houses. All duplex sockets should be upgraded to prevent noisy connections in any of them.

It should be said that Vinyl playback is fundamentally simple. I think playing music only requires 3 tubes and a moving magnet cartridge. The vinyl itself is quite noisy (in a pleasant way), so a little power noise won't be annoying.

MSB and dcs people are angry with power noise, environmental noise, atmospheric noise, and noise generated by various computer chips. Digital music reproduction is more susceptible to these problems.

The entire civilized world is shifting from fossil energy to solar energy. A whole new series of questions are about to be before us.

It all started with Ben Franklin flying a kite in France 250 years ago!

The link titled in footnote 8 of the YouTube video is "A major power upgrade from the roof down has produced amazing results!" does not work. It has "youtu.be".

Having said so much, so much time, and wasting so much money trying to achieve high-quality isolated power supply! ! ! I live in the "Wild West" power supply company in Peru, where the power supply company provides industrial-style Delta 3-phase domestic service without any neutral or ground wires, so everything is floating, noisy, and dangerous The impact of voltage fluctuations.

However, there is a basic, simple and obvious starting point that can advance 50-80% of all discussion issues at a relatively moderate cost:

1. Install a large-rated isolation transformer (with electrostatic inter-winding shielding) to create a fully isolated power circuit with active, neutral, and ground connections, directly connected to the main power inlet distribution panel. 2. Connect the Shield and Earth of the transformer output to the newly tested independent ground rod. 3. Connect a good-quality independent 3-wire cable (with optional shielding) to the power sockets of all audio-video-Internet-cable TV equipment. 4. In the case of coaxial connection to the Internet or cable TV, install a coaxial cable isolator (Approximately $10 from Amazon) to maintain complete isolation, including the entire online AV system. 5. In the case of excessive power failure or power failure, optionally add a sine wave UPS with front computer quality adjustment.

However, in these 21st century days, there is another simple solution, at least for homeowners: this is a completely independent 1 kW or 3 kW emergency solar system circuit... .Can also get incidental emergency income. Note that the isolation transformer also provides important protection against incoming spikes and sub-second fluctuations.

I am really confused when reading such a novel legend of $$$ solutions written by experts of $$, but I have overlooked such simple, basic and fundamental problems. Oh, well, I think this is why some people spend $1,000 on PS Audio Power Plants and "lost in a lost world", as the great Moody Blues might say...

PS:: An interesting comment from another reader: If you encounter such a terrible power problem, have all the device reviews so far been severely damaged-oops! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ????????????????????????

I live in Australia, where the AC power standard is 230V (/- 10V) @ 50Hz, 10Amps. There are three cables on each power cord, one of which is GROUND.

But-my turntable has a two-core power cord. There are also CDP, tuner and VHS-Hi-Fi VCR-I use them to record FM concerts.

I did try once to use a large isolation transformer on the AC power supply, but it didn't make any difference.

The main system is currently in bits, but it used to be and will remain very complex. QUAD 63s HP filter-asymmetrical with the LP filter of the subwoofer. I will use several 1/3 octave equalizers to precisely equalize the bass of each subwoofer-they will be in an array ala Duke le-Jeune. The only peak as the room response drops is rear-end collision.

Be careful with a single ground cable, when something goes wrong, all three systems are now very quiet. One of them is used for HT and TV, it is in the family room/kitchen. This is not a big house, but it is "green" that I can do. It faces north, due east to west /-5 degrees. It's hard to resist! The best houses in the northern hemisphere face south.

None of the three systems in my home have experienced any continuous AC power noise issues.

Humph? Due to the long pre-amplifier cable placed near the power cord.

LBNLeast / There was an 8-foot solid copper ground rod outside that hit the soil-after a week of wetting, I dug a hole. The FM and TV antennas and all three audio systems are grounded.

Overkill? ! We got quite a lot of summer thunderstorms and lightning, so I took it seriously. Moreover, we are very close to the snow-capped mountains and also very close to the Great Southern Ocean, which can be windy.

Lightning strikes are the main cause of bushfires here, and there are occasional fire storms.

Therefore, the heavy-duty coaxial FM and TV cables have serial arresters, and I can open and replace the breaker diodes.

If I reinstall the system from the street, the entire house is rewired. The input power source must be buried in the ground, and then enter a box equipped with an instrument and an isolator through an armored pipe. The isolator must be fixed on the external brick wall. Then the supply enters the underground house, and the concrete is wrapped in three consumer units, in their own cabinets, as short as 3 meters. All cables connected to the subscriber unit pass through steel conduits. According to our regulations, a ground loop impedance of 0.49 ohms is unqualified and requires 0.35 ohms. I think my measured value is 0.19 ohms. I connected it as three single phases, the audio is powered by the power supply, otherwise it is only used for car chargers. There is also a dedicated cable for powering a single audio socket. It is also buried in concrete, and the drain cable is shielded and grounded. I don’t need any masters. I used a fully qualified electrician company. They also rewired the rest of the house and a new kitchen at a lower cost than Mr. Fremer.

All cables hidden in masonry/concrete must be laid in steel conduits. This is the General Electric code.

You need a power line conditioner to filter out RFI/EMI-contaminated power lines that lead from the service entrance power line outside the house to the "single audio socket".

Ideally, don't share any analog devices with any digital devices on the same power outlet or "outlet". Because once turned on, all digital devices will emit RFI/EMI noise into the power line, and then enter any analog devices that share the same power outlet/socket.

I detected this type of RFI/EMI surge using a broadband EMI/power line noise digital meter. No kidding.

This is why my dedicated power line is directly connected from my home's distribution board to 2 main circuits: one dedicated to analog circuits and the other dedicated to digital circuits. I have installed an RFI/EMI online filter for each circuit. So there is no longer RF noise "crosstalk".

Which universe? In the UK, we bury cables indoors under concrete screeds in flexible plastic conduits.

The power socket supplies power to the power conditioner with cross-contamination isolation function, with a pair of isolated sockets.

The point is that getting the right power supply, especially for new or restored installations, should not require any audio experts, but only qualified and qualified electricians. My guy is a large-scale hotel, and building a house is not rocket science. The only additional expense I incurred for audio purposes was approximately 100 feet of shielded cables with drains (NeoTech and Belden), which cost about $500, to provide 3 separate feeds for my audio, AV, and modem.

..... Flexible plastic conduit. "Qtd Stevens.

Is it a British standard? How does the soft plastic pipe handle the load of concrete? The embedded concrete slab during construction shall adopt rigid steel pipes.

I have participated in many overseas large-scale commercial construction projects. When embedded in concrete, BS specifies rigid steel conduits for all wires! !

https://www.tlc-direct.co.uk/Book/4.5.1.htm This is as important as heat, corrosion and not bending the cable.

Yes, strictly speaking, for wires, a licensed electrical union does this work.

No, this is for audio and not for lighting. Therefore, audio expertise is required to get the best sound from the wire.

Therefore, my post above is about RFI/EMI power regulation, which is usually beyond the scope of a licensed electrician.

Like most places in Europe, the UK has extremely strict electrical standards. The standard floor structure here includes the substructure, membrane, 100 mm insulation layer, and then put heating, water and electrical conduits on it, and cover the whole thing with a concrete screed of about 125 mm. The heating and water pipes are all PVC these days. The cable I use has good shielding and drain wires. As the work progresses, local authorities will send building inspectors to check everything. I have to rewire the entire house to get a certificate to be insured. My electrician knows the audio and provides my stereo from a stage that is completely separate from the rest of the house. Nowadays, electricians engaged in high-quality home installations do a lot of AV and professional installation work. They know what is needed, including power conditioning, which is what they want to accomplish in the consumer sector. They also know every letter of the electrical code, and I doubt that Mr. Fremer's masters know it, because they run an audio company instead of a full-time electrician. They also run copper cables and fiber optic Ethernet cables because they told me that my Mesh system is not working properly and they are right.

I don't know why audiophiles think they are so special. Given what an experienced and qualified electrician must do these days, these requirements are very basic.

Nada, my friend. Is the PVC pipe buried in concrete? ? ? Fear! !

For example, in the United States and Canada, only copper pipes are used to transport hot and cold drinking water inside the residence.

For rainwater and wastewater discharge, plastic pipes are used.

It is a little more complicated than PVC: cross-linked polyethylene PE-Xb inner layer, inner adhesive layer, middle aluminum layer, outer adhesive layer, high-density polyethylene HDPE outer layer. This is a European standard.

It is easier to use, flexible, and more reliable, and the price is only one-third of copper. I think it is the same pipe used in underfloor heating and can easily cope with a layer of concrete.

Copper is still used everywhere, but in the long run, this kind of thing is better and cheaper.