2. amps-preamps
  3. 147940-3215

amp clipping earlier than usual?

I have a pair of mono amps with clipping indicator LEDs. One of the amps' indicators is lighting up for the first time. I've never been able to make them light up before. But it only happens on one of them. It lights up way sooner than as loud as I typically max them. I don't hear any distortion. So I'm thinking it's not an output transistor. These are LSR&D Superamp monos, 300wpch. Anyone? TIA
csontos
csontos OP
1,311 posts
 
Hi Elizabeth. I should mention the transformer in that amp is 120deg F while the other is 112deg at idle
tomic601's avatar
tomic601
12,989 posts
 
Transformer runs hotter when filter caps are failing 
csontos OP
1,311 posts
 
Well, the only caps not replaced are the large ones in the psu which I just happen to have Kendeil replacements for. But is there a way to be sure?
mrdecibel
3,065 posts
 
So the amp was " not " completely rebuilt " ? I would replace those caps for sure, as it cannot hurt.
csontos OP
1,311 posts
 
Right. They seem to be the ones that are usually kept in place during rebuild. I guess they are more robust than the smaller ones.
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