2. amps-preamps
  3. 1188873538

I don't understand a problem with my amp.

I own an EAD 1000 amplifier. I have fed it with both a Joule preamp (love it) and a Surround Sound Acurus preamp. After an extended (over two days) period of time on, it will start feed a distorted signal to the speakers. This has occurred with both preamps and different speakers. After the amp has been off an extended period of times the sound is normal.

I am curious before I send the amp off to be fixed by Noble Electronics what you think this could be?

Thanks.

Richard
rbischoff
3 responses Add your response
reubent
7,005 posts
 
Possibly either a cold solder joint that is affected by heat buildup, or an electrical component that is affected by heat.

TIC
aball
2,018 posts
 
Sounds like a bias problem to me. Heat can make the bias drift if the feedback loop (or the component tolerances if zero feedback) isn't quite right. If it drifts enough, you get a distorted signal for sure. I think it is a big problem that should be easy to locate by a knowledgeable tech.

Arthur
rbischoff OP
80 posts
 
Thanks a lot for the responses. I should ship it off next week and will let your know the answer.

Richard
Log in to respond
More to discover
80x80
Mark Levinson No 433
80x80
VAC Signature MkIIa SE Silver with Phono Stage MM/MC
80x80
Ayon Audio Ayon Triton EVO Mono Amps Pure Class A