2. misc-audio
  3. 157777-13272

Measuring line noise and power conditioners

I recently purchased a Trifield EMI (Dirty Electricity) Line Meter to measure noise coming from my outlets. To my surprise, my $500 power conditioner (name withheld to protect the potentially innocent) appears to not filter any noise per the Trifield readings. In fact, with some of my outlets the measures are higher through the conditioner’s outlets, than the measures coming straight out of the wall. The manufacturer denies anything is wrong with their conditioner, claiming the Trifield is measuring the wrong frequencies. Can anyone explain?

output555
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geoffkait's avatar
geoffkait
23,365 posts
 
Wow, I have seen that much jibber jabber since the last time I squeezed your head. You don’t get audio frequencies until the speaker diaphragm moves. Then you get audio, Mr. Smarty Pants. 👖Up until the signal gets to the speaker there is no audio, only current and voltage.
mammothguy54's avatar
mammothguy54
951 posts
 
I got an Audioquest Niagara 1200 and use Audioquest Tornado High Current and Source AC cables.  I also installed an Audioquest Edison Duplex AC wall outlet.  I have no measuring device to test my wall AC outlet noise (though I did the research and both read and viewed the metered difference of AC noise before and after the Niagara 1200 was inserted).
What I can say is that my system sounds far more dynamic and clean, than ever before.  The concept and the product work exceptionally well.
My ears told me so.  'Nuff said...
nonoise's avatar
nonoise
10,901 posts
 
Wow. Just, wow. Seems like every discussion on audio brings out the worst in people: those who decry things due to, measurements, and those who actually use their ears and report their findings.

Then comes the acrimony, the insults, the authoritarian know it alls who talk down to the less well versed, but better listening crowd.

It's why I've taken to posting a whole lot less as this place has been taken over by the same breed as the YouTube crowd. Anyone notice how many audio review sites no longer have a comments section or have simply stopped online publishing? 

Too many ids unleashed thanks to the internet. If those thoughts and words could be manifested, we'd destroy ourselves overnight, like the Krell did in Forbidden Planet.

All the best,
Nonoise
almarg's avatar
Ag insider logo xs@2x
almarg
9,670 posts
 
@roberttdid Regarding your recent post in which you quoted from my earlier post: I agree with everything in your post, except that I don't see any inconsistency between your statements and my statement which you quoted.

Keep in mind that what I was addressing was noise filtering that would be applied to the incoming AC by a power conditioner, not filtering provided at the output of a rectifier circuit or anywhere else within an amplifier or other audio component.

Regards,
-- Al

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