My amps are buzzing.

[pigmode]

Overnight my amps just developed a buzz that varies with the volume level. When I start up a CD, the music is distant and very reveberant. I tried:
--switching ICs around, reseating etc.
--bypassing preamp
--powering the amps alone (direct connection to cdp)
--jiggling, reseating tubes
--changed output tubes
--changed power strip
--changed wall outlet


Here's my system:

Quicksilver Mini Mono
LW-1 passive preamp
LS3/5a
AH! Njoe Tjoeb 4000

Any advice would be appreciated.

thanks

[Metralla]

Your system is buzzing; but you don't say that. You say your amps are buzzing. Can you try a different CDP just to be sure? Even a portable CD player will help eliminate (or confirm) the AH! Njoe Tjoeb. That has to be the first step.

Regards,
Metralla

[Bob Lovely]

Pigmode,

Do you live near any radioactive sources?

If not, sounds like either a Power Supply or possibly even a grounding (earth in the UK) issue. Power Supply problems can cause audible noise.

A couple of possibilities...

Bob

[pigmode]

Thanks, Bob, Metralla. It appears that the cdp is the culprit. I'm going to try a few things before I give up on it.

[Mal]

Pigmode,

have a look inside the player at the solder joints connecting the phono plugs to the board. I had a player that produced a buzz/hum in the speakers which came and went as you moved the interconnects around. It turned out that one of the phono plugs had a broken earth connection. The force you apply when you push on a tight pair of interconnects can be enough to break the solder joints over time - especially if you're always moving equipment around like me :D.

[pigmode]

MalcS,

Based on your suggestion, I just tried listening with headphones and the played seems to be working fine. You may be correct as far as the jacks are concerned. More later...