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I've got a humming sound coming out of my sub-woofer on my home theatre and 4 out put light on the db scale ??? you think it's from the power or from the input inlets??

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Check your input cable and change it .

Posted on Jul 06, 2008

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Hello Guys,Can you please help? can I replace the sub woofer on my sony home theatre system DAV-DZ231 with a Celestion sub woofer s10


Presumably, the Celestion subwoofer is self-powered in which case it would connect to an RCA subwoofer output on your Sony system if there is one.

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No sound comingout now on my HT BD2T subwoofer,just humming.


Try reconnecting; then replacing the audio cable for the sub woofer. I think it is just a standard RCA cable.

When you disconnect the RCA cable does the sub woofer still hum? If so the sub woofer may be bad. If it falls silent chances are it's just the cable.

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If the system uses a remote control, you may need to adjust the subwoofer out signal setting or turn on the sub in a menu, and on many systems, you can only access those settings via a remote control (you should check the onkyo user manual on how to do it).

Now, this is just one suggestion, it may work, but then again, it may not.

These could also be connection problems or some internal trouble in the onkyo sub signal output section or in the subwoofer input section, but hopefuly, it's just a "turn on" or "signal level" setting in a menu.

Good luck

3rq8 (triarcuate)

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If you have a "subwoofer-out" jack on the back of the receiver, you can put a y-cord on it and connect it to two powered subwoofers. Don't expect a big difference in the sound, however. You may even get less bass depending on where you position the sub-woofers.

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As I found somewhere on the internet; there are two 470uF/25V capacitors on the power supply board in the sub-woofer that are the cause of buzzing, crackling and then eventually no sound. Go to Radio Shack and buy two Catalog #: 272-1030 470uF/35V capacitors and change them out. They are in the middle of the Power Supply PCB and are close to the long flat aluminum heatsink. Make sure you match the polarity properly when replacing. Your unit will be as good as new and will proibably last forever now.

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I have no sound coming from home theatre system


I would check see if you can hear any hissing coming from the speakers if there's no sound then check to see if this product has output protection fuses and if so see if they are in tact if this doesn't solve the problem you may have dead outputs. If there is hissing coming from the speakers check your audio source to make sure it is feeding sound to your amplifier without looking its hard to say in these case's there's a lot to go wrong

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Installation Help


This means that you have purchased a three piece home theatre system. Two tweeters and a sub-woofer. Assuming you are using a Stereo player (Tape/CD/DVC)you have to connect the Left Output of the Stereo placer to the Left Input at the back of the Sub-Woofer and the Right output to the Right input of the subwoofer by cables. Then take tweeters and connect them to Right speaker and Left speaker output at the back of the sub-woofer ( note if the speakers are marked L/R, then connect them to the subwoofer output accordingly. In case you are using a 5.1 player, then only connect the front right and front left to the Right and Left input at the back of the subwoofer. You are and you can now start playing your music or movies and and you will get theatre quality sound.

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