Subwoofer huming...

[Z3r0]

Hey i have powered sufwoofer and it makes this buzing sound, so i figured "meh" ill return it for a new one. The new one makes the same sound (a little bit louder), so i figured must be interfearence causing it to hum i tried it in 3 different sockets in 3 different rooms still hums like a bizatch. Any suggestions? This humming sounds eating through my head!

[markw]

Does it do it with nothing plugged into it? ..or does it only do it when it's connected to the receiver? It it's the formar, it's a subwoofer issue only. If it's the latter, I'd suspect a ground loop.

[joel2762]

Would you mind telling what brand/model the sub is?

[Dusty Chalk]

Actually, the last time this happened to me, it ended up being fixed by replacing the subwoofer cable with shielded one.

Yes, it surprised me, too.

[yogo]

http://www.partsexpress.com/pdf/300-806.pdf

Subwoofer hum elimination info at the bottom of the page.

[bignerd100]

Unhook the CATV from the system (wheather it is plugeg into the VCR or the TV).

90% of the time this is the culprit. If it is you will need a Magic by Mondial. This fixes the cable grounding problem without degrading the signal strength of the CATV.

Otherwise it is a bad interconnect, uncommonground (sub on different circuit than stereo), or Gremlins.

[Ryanm]

The hum with my subwoofer was the same as dusty chalk's. I was using a very crappy rca cable to connect the sub to the reciever. After I replaced the sub cable, the humming went away.