Any chance the speaker cables or interconnects on the right side of the amp working lose? I had a heavy interconnect cable work lose and it took me months troubleshooting the problem.
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Bad relay in the the amp. I had the exact same problem with one channel of my multi-channel amp. It took me a long time to isolate it to one channel of the amp. The channel would appear to go dead, but when I put my ear against the speaker I could still hear very low music. I sent it back to the manufacturer for repair and they had to cycle the power about 50 times before they could re-create the problem.
Canjo07, you speakers are OK. But I spotted something in one of your posts that sounded like a procedural error.
Swap the channels left for right at the input of your amp. Then wait for the problem- is it still in the same channel?
No=> preamp or cable, **or** input cable or source
I would not do anything else until you have answered this step!
Thanks all for the responses. Atmasphere, I did what you suggested and it is still the amp channel. Interesting note now though is 6 minutes after a cold start up the channel comes to life and everything works. I had not noticed this before. Btw, I've been in contact with Spectron and they are great to work with and a great company - I'm sending the amp to them today to troubleshoot and repair.