20 Most Recent Acoustic Research HD510 System Questions & Answers

check your audio line in connection, either L or R signal line floating may also cause humming noise. Sub woofer usually very sensitive. If your audio input not connected, do you still hear humming noise? in actual you should not hear such noise, unless volume at max then it is possible to hear little.

what happened just prior to the sub failure? Have you tried a continuity test across the sub speaker coil?

Humming noise could be an indicator of bad capacitors in the amplifier. You can take the amp out, pull the cover off, and look at the capacitors. If they appear to be swollen at the top, with some brown ooze coming out of them, then they need to be replaced. You can actually do this yourself from radio shack parts, just get the proper sized voltage and uf capacitors, desolder the old ones, and solder the new ones back in.I have to do this every 5 years, or so, to my old MTX home sub amp.

DC 12v adapters are common and I think that would work. The similar "Powered Partner" speakers used a 14v DC adapter. Just check the size of the plug and the configuration (center pin is +). Radio Shack and other sellers have universal adapters.

you have only one? or one pair? this standing speaker need a Amp to drive.

Not recommended, market you can find spray type contact cleaner. Brasso is oil base may worsen your problem. Better solution is replace the part.

your question too brief, no one can help. be more details so that can understand on your problem. or else there may have too many possibility to cause the problem happen.

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