troubleshoot: sub or receiver? - AVS Forum
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post #1 of 3 Old 01-10-2012, 07:33 PM - Thread Starter
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I have an onkyo 602 and an infinity ps-12, both of which are about 5 years old. I noticed that my sub was cutting on and off every couple of seconds. I switched the cable, and then tried a Y adapter and increased the power, just in case it was a signal issue. the same thing happened. so, the question is: how can I tell if it's an issue with the sub, or if it's something at the receiver level? I'd hate to buy one and find out that the other is the culprit. no other issues are present, and the sub operates normally when the signal comes in. also, there is no auto detect option...it's an off or on proposition.

none of my friends are into HT, so I can't just haul the sub anywhere to try it on a different receiver.

thanks for any thoughts.
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post #2 of 3 Old 01-11-2012, 04:39 AM
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The issue could be with the auto-on circuit (if there is one) on your Infinity subwoofer. Sometimes, after a few years (or even a year), the auto-on circuit can go bad.

If you can just use the on/off on your ps-12, that may solve the problem.

You could wiggle the rca cable where it goes into the subwoofer and also into the receiver. If the wiggling helps, you may have a short in the physical connection. I think this is unlikely.

Google "Infinity PS-12 auto-on problem".
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post #3 of 3 Old 01-11-2012, 04:46 PM - Thread Starter
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I unfortunately don't have any options with the on switch...it's on or off. I'm starting to think it is overheating...it seems to play fine for a while, and when it starts acting up, it stays that way. I will just turn down the gain and look around for a new sub.

thanks for the reply, though.
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