speakers cut in and out

[Bob Hull]

I have both an indoor home entertainment center and out door speakers. After about an hour of use, whether I'm listening to the indoor or outdoor, the left channel speakers will sometimes fade or just cut-off completely. The amplifier is only a couple of months old and iit has just recently started this problem. The previous amp did kind of the same thing on ocassion. Speaker connections and wiring has been checked and polarity verified. The amp is plugged into a power strip.

 

[j_garcia]

It sounds like something is wrong with the receiver. Sounds like a bad solder joint or a lose or partially faulty component inside the receiver. The only thing that concerns me is that you say it also happened with the previous receiver also - that would tend to indicate a wiring problem, as well as the fact that it is only happening on one channel. When it happens are you listening to one, the other or both? How are the second set of speakers wired into the receiver?

 

[JeffD2.]

Next question, does this happen with all input sources or just when you're playing cds for instance? Could be the disc player as that's a common denominator, if thats the case.

I've had bad speaker wire come right off the spool as well. If it happens with all sources, its the wiring or the speaker itself. Switch the R/L speakers. The odds of two bad amps with left channel deficiencies are not likely to say the least.

 

[wilmeland]

check the wiring to outdoor speakers

Actually, it could be wiring to either indoor or out door speakers. However, my suspicions would be with out door since they are subject to more adverse conditions and cracking insulation/moisture could result in intermittent shorting.

I'd start by disconnecting the out door speakers for a while and see if symptoms go away. What leads me to suspect this is indication that same condition existed intermittently with previous receiver.

 

[bobgpsr]

Try swapping the left and right speakers first outside, then inside. It could be an intermitent short inside one of the left channel speakers.

Bob