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Humming through sub woofer - Audio & Video Receivers

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  • spiceymoose May 17, 2008

    my subwoofer hooked to the mono sub out hums
    at first i thought it was my sub so i bought a new sub but it does the same

  • Juslee Feb 02, 2009

    I have humming through my sub woofer problem too.It got so bad that I can no longer have it hooked up to the stereo.So its out of commission.

  • fabyouless Apr 09, 2009

    When i go into the SET UP menu on the STR DE698 and set S.W. to NO, the humming stops. It's got to be a problem with the circuitry in the receiver.

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2 Answers

Same problem here, changed cable..no change

Posted on Sep 08, 2008

Buy a radiogram

Posted on Aug 20, 2008

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do you have active speakers eg sub woofers powered speakers.they will still make noise if the power is left on. turn off power to sub woofers etc

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If there is humming , disconnect the powered Sub input to the receiver

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Hi, I have a Harman Karddon sub - woofer. when I changed the fuse I get a humming sound. I would like to know if the type as in (2.5a 250v typeT) make a difference/


Fuses are either blown or not. The hum is from an ungrounded or unshielded cable somewhere.

What required the fuse to be changed in the first place?

Jun 14, 2011 | Audio & Video Receivers

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I have a active sub woofer (akari bazooka) but the only connections available are the speaker connections. The front of the sub woofer has volume adjustment. How can I connect this sub woofer to my Harman...


hi,
You can't connect the pre out of your AVR to this sub woofer. Do one thing connect the frond left/ right channel speaker "B" out of harman kardon to the sub woofers left right speaker in put. you can connect the speaker out "A" to your normal left right speakers. Remember to switch Speaker "A" and "B" in ON position in your AVR. Also do one thing go to the speaker setup of AVR and switch OFF (slelect NONE) the sub woofer.This will disconnect the sub woofer pre our and the sub frequency will mix with frond left right channels.
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When setting up my receiver the subwoofer is not putting out sound. It is connected and on.


hi,
first of all check ur sub woofer is it working or not. for that pull out its RCA connection from the receiver. power on the sub woofer and touch RCA's middle pin with ur finger. if its working it will produce a hum. if ok, go for the next,

do the following setup in ur av receiver
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I have no output from subwoofer


Hello Fixya customer,

Thank you for your question.

Please check that the sub woofer and RCA cable are working by removing the RCA wire from the Sub woofer output of the Onkyou and touching the center terminal of the RCA plug. You should here a hum when it is touched.

If you get the hum, then the next step is to "Clear" the Onkyo by holding down the "VCR and Stby" button until you see "Clear" on the display. Warning, this will clear any settings special that you have made to the receiver, but will get you back to the Factory settings.

Lastly, check various sound fields, and the Sub woofer volume setting, if you still do not get sound, please have a Onlyo service center verify the output.

Thank you using Fixya.

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