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Infinity CSW-10

post #1 of 6
10/4/11 at 8:25am
Thread Starter 
I'm having an issue with the Infinity CSW-10 sub. I leave it plugged in with the switch on and when it first receives an audio signal I get a pop then a sort of whistle noise. It goes away in just a few seconds and then I don't hear it again until the next day when I turn the TV on again. Is this a grounding issue? Maybe a component on the internal amp going bad? Anyone else experience this?

Edit: From what I've found by searching online (crutchfield review and epinions) is that the pop and whistle (squelch) noise is caused by the amps auto-on feature. The amp shuts off after 10 minutes of not receiving signal, which explains why I wouldn't hear it again until the next day. I just don't recall hearing this noise when I first owned this sub (a few years ago).

Ref:
http://www.epinions.com/review/pr-In...t_174976568964

http://www.crutchfield.com/p_108CSW1...w&rvm=ShowAllt
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post #2 of 6
10/5/11 at 4:25am
The auto-on feature can start having problems after a period of time. The auto-on problem has occurred across a number of manufacturers (sometimes within the first year of ownership).

If you have the option of a pure 'on' switch in addition to 'off' and 'auto-on', then you should be ok even if your auto-on fails. It is generally not cost-effective getting the auto-on circuit repaired.
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post #3 of 6
1/26/12 at 5:06am
i have two of these subs and have had the same issue on both of them. on one it has gotten to the point where i can no longer use it as it seems to be endlessly stuck in the cycle of powering on and going into standby even though it is receiving a signal, making it unusable.

i recently located the service manual online at hifi-manuals.com and am planning on giving the sub and manual to a friend to see if he can't identify the problem and maybe fix it...i'll report back any progress or findings.

shame as i rather enjoyed this little sub.
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post #4 of 6
1/26/12 at 5:54am
You can sometimes get a deteriorating auto-on circuit to keep working by boosting the signal that goes from the AVR to the subwoofer. There are relatively inexpensive circuits that do that.

Capacitors deteriorate with age and heat. I believe a few individuals (but not all) have been able to get their auto-on circuit to work properly by replacing the capacitor (or capacitors).
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post #5 of 6
1/26/12 at 6:58am
Quote:
Originally Posted by wwinkler View Post

You can sometimes get a deteriorating auto-on circuit to keep working by boosting the signal that goes from the AVR to the subwoofer. There are relatively inexpensive circuits that do that.

Capacitors deteriorate with age and heat. I believe a few individuals (but not all) have been able to get their auto-on circuit to work properly by replacing the capacitor (or capacitors).

thanks, that is essentially what my friend has been speculating is the problem based on the issue i described. so replacing a bad cap or two may do the trick...otherwise i was hoping that perhaps he could bypass the auto-on.
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post #6 of 6
1/26/12 at 9:10am
This is just a general comment. I put my subwoofers on power strips and like to turn them off when I am not listening. If that is done, then an auto/on circuit will only deteriorate very slowly (since it may only be in use a few hours a week).
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