Question about Kenwood KDC-X590 CD Player

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Powered Subwoofer won't work

My powered subwoofer won't work. It used to put out sound and turn on fine, but then it started to go in and out depending on its mood. Now it puts out no sound, and does not turn on. I have ruled out wiring. I have ruled out the subwoofer "ON" setting on the deck. I have ruled out a problem with the powered sub. What would cause it to go in and out from day to day and then suddenly stop working altogether? My deck also has problems with its display. It also went in and out for awhile and then finally quit. I still get sound from my speakers, and everything functions normally, (except for the powered sub). I don't think the problems are related but maybe they are?

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  • dkweaver7 Jan 10, 2009

    My khl8120 subwoofer will not produce sound. It has worked in the past. It is hooked to a sony strde 875 receiver. Connections are from subwoofer audio output to R rca low input. Power light is on, switch is on normal.

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This problem has many causes... but try this one... often when a faulty subwoofer speaker is to blame this test will tell you. Connect another speaker(any speaker) temp to check if there is audio still to the sub. Keep the levels down to ensure you dont go on a trail of destruction.
The spider wires from terminals on the speaker to the cone may be intermittent. I have seen this a lot on all types and makes of subwoofer driver!! This a common failure and can often be detected by tapping the speaker cone when it does the cut out thing. If it starts up, and they often do..., then you probably have intermittent spider wiring to the cone. A GOOD “Hi Fi speaker repair dood” can help here and replace the spider wires for you and save the expense of replacing the driver.
This is just one solution to the problem you are having.... there are many more..... and you should try this FixYa and see what happens. If you cant tell WTF then hit me back up here again. I work WITH YOU, to get the problem out for you.

If it sorted what you suspected... then rate me !FixYa!!.... Thanx

Posted on Dec 28, 2007

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I have this same problem

Posted on Apr 22, 2008

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1 Answer

Very week sound


Definitely need more info - such as type of amplifier or receiver, how many speakers you are running, whether the subwoofer is powered or not.
As a simple test procedure: Disconnect all speakers and plug in a pair of headphones. Get a strong audio signal? Good, move on. No signal or week signal, you have an amplifier issue before the audio even gets to the speakers.
Next: Disconnect all speakers, turn the volume down, and connect one speaker to the left output channel. Slowly increase the volume. If that works, do the same on the right channel. Everything OK? You're putting out enough gain on both channels. Sometimes one channel goes bad. You can still listen to your sound in mono moder, or drive two speakers from the single working output. Not stereo, but dual mono. Move on.
Connect left and right speakers but not the subwoofer. Repeat the test. Whatever is left is probably the problem. If the subwoofer is powered, check the power supply or incoming voltage. If the other speakers are driven off the subwoofer or powered from there, that's likely the problem.

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For starters, it is a home theater in a box. With that being said, highly consider upgrading before spending more money on the system. If thats not even an option, have you tried adjusting the level of signal being sent from the receiver out to the sub? It sounds stupid, but this is often over looked and can sometimes be tricky depending upon the type of receiver you are using, to adjust the level being sent to the sub... Typically when a subwoofer has little to no sound, this is the issue. Also, is the sub powered (does it have its own amplification using a power cord that plugs into an electrical outlet? If so, does it have a volume knob on the back, and does it respond when turning the knob? If its not powered, than your problem is what I described above, unless you've already done that. If that is the case, your speaker is fried... Hope this helps

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http://www.retrevo.com/support/Denon-AVR-589-Receivers-manual/id/23110dj893/t/2/

See page 9

I seriously doubt your test mode worked fine on the subwoofer level adjustmnent.

Get a powered (active) sub.

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