Deep_333, I know what you are saying. We had some test equipment that has to measure in the 6 ma range. These stands were decades old but suddenly we could not get a quiet enough signal to pass final test. My theory was that the new solar farm less than a mile away was the culprit but I will never know. My test engineer wanted ground rods sunk next to each test stand. I had to have some long discussions with our facilities Engineering Manager to get his approval. He was convinced it would be a waste of effort. The stands were working fine before, blah blah blah. Well, the ground rod worked. They had to drill through the shop floor and then sink the ground rods while avoiding a 400 amp service trunk. Yikes.
Any one measured the EMI/RFI attenuation performance of audiophile power conditioners?
Hello,
I was looking for a very good/robust power conditioner which will clean up reliably very noisy/dirty power supply that I have in my aprtment. While looking for one I went through catlogs of AudioQuest, Shunyata Research, Synergestic Research etc. but no one published charts showing attenuation performance over frequency range like you get for EMI filters from Schurter or Schaffner etc. which are in the industry for EMI/EMC compliance.
Since audio is very subjective, but contrary to audio reproduction Power and EMI/RFI reduction is completely objective and can be clearly demonstrated via attenuation charts.
Hence I am asking if anyone has measured the actual performance of these audiophile power conditioners. I am not denying someone saying they hear improvement after using XYZ product, but since I am talking about power conditioning or EMI reduction it's as objective as it can be.
I am not at all surprised to see all the manufacturers not publishing the performance data, else it would be used in other industries and research fields where it's far more critical and have far more stringent requirements on the performance of conditioner/EMI filters. But I am shocked to see even products ranging above 5-10K are following the same practice of not publishing the results.
Please note I am not a measurement fanatic, but I know where I can chase the measurements and where I can rely on my hearing to gauge the difference.
Regards,
Audio_phool
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@deep_333 Your example is a very poor one. Since you quoted that only one manufacturer existed, then obviously you had no other choice to find a workaround. So it doen’t apply to current situation as you have a neumerous manufacturers providing the product. Besides power for Audio isn’t anything really special either so don’t try to make it sound something very special. It’s attitude of audiophiles of accepting subjectivity in every thing under the sun has lead to manufacturers take advantage. Besides even though I have technical lnowledge and come from research background I don’t think engineering degree is needed to understand the need of measurements for power conditioning products which cost and arm and leg. Just common sense is needed. @tonywinga I doubt those certifications will cost so much that power conditioners costing tens of grands cannot cover it. Besides Im not going to get into cables, thats another debatable topic. Audio_phool |
@vk_onfilter I saw the productline of your company which looks impressive & you seem to serve diverse industries including chip manufacturing, R&D centers etc. and you have provided the performance chart for your products. Besides you seem to have more than 40 years of experience in the field of EMI/RFI reduction/compliance. Is application of EMI/RFI filtering to audio any special than other industries you serve which allows one to not to specify the performance data? Can such practice will be acceptable if the same product was to used in other industries than in Audio? Audio_phool |
Just pack your bags, start a thread at ASR and tell them what a measurement wiz/data driven technical genius you are. The A’gon guys and every manufacturer designing power conditioners for hifi applications (Michael Borresen, Garth Powell, etc) are all soaked in snake oil indeed. They can’t keep up with your unmatched genius. Goodbye now |
@deep_333 do youself a favor and get out of audio rabbit hole to see that even $10-$20 commodity grade EMI filters have the specs/data published. So if me insisting on specs/measurements is going to get you worked up so much; it's better for you to say goodbye. Else you have a job to keep these manufacturers alive in the audio industry, as they won't survive outside Audiophilia with this way. Audio_phool |
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