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Help: Audio Gremlins

Just today, my CJ Premier 8A right amp started making a static-like sound ( almost like a faint radio crackling) through my Maggie 3.6 tweeter. I know it is not the speaker because I swapped them, and the problem is the same. I have switched all my equip.and installed a different amp,and have positively isolated it to the right mono amp. I thought it was a bad tube, but I switched all the tubes ( both output and input) and even installed new ones to no avail. The problem MUST be with a capacitor or transformer. Have any CJ owners noticed a similar phenomenon? The amp still plays fine, and the noise does not increase with an increase in volume. Again, it sounds just like the faint crackling when a tube goes bad, but it is not the tubes. Any suggestions would be most welcome!
jmslaw

Showing 1 response by rockhead

rockhead
83 posts
 
I have the exact same thing with a class D Spectron Musician II amp. I tried a few things to no avail. I'm not very handy with electronics so I couldn't do what Lugnut did with those other amps. I don't even know if an amp with no volume control has a pot. I will look at the solder again.
Things I tried:
Lifted ground
changed speaker cables
tried XLR ic's (worse)
tightened down coil
dedicated lines, P300, Audio Magic Stealth, various pc's

I take the cover off that amp and look and get the same feeling as when I lift my car's hood....unless there is something obviously broken in half, I have no clue.

Patrick
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