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Sub woofer hum sub333 - Audio Players & Recorders

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Hum is caused by shielded audio cable positioned too close to mains transformer. Open rear side panels and locate twin grey shielded cables from second amplifier board going to little printed circuit board screwed to the back of the plastic box that covers all I/O connectors. Just reroute this cable so it has more distance to the transformer and the hum will be gone!

Posted on Jun 01, 2009

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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...


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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.

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