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Diminished sound in left channel

Hi, I've just recently noticed this problem in my system and I'm wondering if anyone can offer advice as to what the problem may be:

After listening to music for a few hours the sound coming out of the left channel of my system is diminished by about 75%. If I turn the amp off for an hour or so everything is back to normal. It's definitely not a problem with the speaker (I've swapped the speakers and the same problem happens). I guess one possibility is the fuse in the amp, but I wanted to get some opinions from the forum before changing them out. I thought that when a fuse goes it's all or nothing and there would be no sound from the affected channel.

My setup is:
JM Lab Electra 926 speakers

Classe CAP-150 integrated Amp connected to a PS Audio Digital Link III DAC via analog coax cables

SqueezeBox v3 connected via a digital cable to the PS Audio DAC

Thanks for any insight anyone can offer.

-Scott
chicago_scott
ryder
1,687 posts
 
Definitely not the fuse. If the fuse of the amp is blown the amp wouldn't power up in the first place. I highly suspect it's the Classe amp although it can be the PS Audio DAC. Try plugging in a spare source such as a DVD player into your Classe amp and see if the imbalance in sound still occurs. If it does, your Classe amp needs a technician.
cyclonicman
693 posts
 
I think eventuslly, it is going to occur again and will come a point where it is not going to restore itself. You should have it looked at by a technician. I have had a similar problem in the past and it was a blown resistor.
chicago_scott OP
1 posts
 
Thanks very much for your responses. It definitely seems to be something with the amp. I didn't mention it in my post, but I have a DVD player connected directly to the amp (by-passing the DAC) and the problem is exists with that component as well. So the DAC can be ruled out.

Before I took it into to a shop I wanted to get some people's opinions about the possibility of it being a fuse (which I could replace myself), but it sounds like the fuse is definitely not the problem.

Marakanetz: I actually have Electra 915's (not 926's) hooked up to this amp so I think the amp should be able to drive them, but I'll confirm that the a the tech when I take the amp in.

Cyclonicman: Was it very expensive to fix the blown resistor you had?

Thanks for all your help, -Scott
cyclonicman
693 posts
 
Scott, My Rogue 88 amp was still under warranty at the time, so I only paid to ship it for repair.
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