Power conditioners suggestion

[Julf]

This was the results of noise when I tested a power conditioner outlet 20 years ago

From where (and how) did you measure?

 

[Thomas_A]

From where (and how) did you measure?

I measured with my portable mac on battery (AC disconnected) using am external sound card, on the pre-out on amp. I tested the amp alone, and with various other sources AC-connected to the conditioner. Same result every time. A forum member contacted me, since he had the same filter. I went there and we got the same result.

 

[Thomas_A]

I should also add that the noise was audible as occasional static noise.

 

[Thomas_A]

And also that it does reduce transients on the AC but at the same time introduce noise. There is a thread with me and, Phil Allison and Any Krueger at that time around 2002 when we tried to find the causes to this. Also my amp sometimes went into protection mode using the filter, which was the same result as another forum member had. This stopped when the filter was removed.

https://groups.google.com/forum/?hl=en#!msg/rec.audio.tech/a5AjQSP25ek/snqCH4RXz98J

Thread in Swedish:

http://www.hififorum.nu/forum/topic.asp?ARCHIVE=true&TOPIC_ID=12388

 

[Julf]

I would expect behavior like that from a badly earthed connection acting as an antenna.

 

[Thomas_A]

I would expect behavior like that from a badly earthed connection acting as an antenna.

Perhaps small ground loops were the cause, but then, no noise without it. The problems were noted with several independent system when the filter was there. Cap to ground perhaps the cause in the filter.

 

[Julf]

Cap to ground perhaps the cause in the filter.

Probably, yes.

 

[Deacon Blues]

So very little