PSW404 hum
JimMD
Posts: 2
Hi Guys,
I've had a PSW404 for about 5 months (to go with the SurroundBar) and just recently moved into a house where the room that contains the sub is much more quiet (as long as the kids are asleep). Now I notice an audible and annoying hum from as close as 10 feet away while nothing is plugged in except the power cord for the sub. I've tried other outlets and the thing still hums away. The sub otherwise works when a souce is applied. Incidentally, my big SVS in my home theater hums a small amount too but you've got to put your ear literally on the sub to hear it. Any thoughts? Thanks a bunch!
Jim
I've had a PSW404 for about 5 months (to go with the SurroundBar) and just recently moved into a house where the room that contains the sub is much more quiet (as long as the kids are asleep). Now I notice an audible and annoying hum from as close as 10 feet away while nothing is plugged in except the power cord for the sub. I've tried other outlets and the thing still hums away. The sub otherwise works when a souce is applied. Incidentally, my big SVS in my home theater hums a small amount too but you've got to put your ear literally on the sub to hear it. Any thoughts? Thanks a bunch!
Jim
If we don't make it better, we'll sure make it different.
Post edited by JimMD on
Comments
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It doesn't seem like a ground loop issue, so it could be a case of dirty power being supplied to your new house. You might want to try a product like the PS Audio UPC-200 Humbuster, which helps clean up dirty power and helps with transformer hum issues.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
My 404 has a very low hum to it. Others don't hear it but I do.Receiver: harmankardon AVR235
Mains: polk R30
Center: polk CSi3
Rear Surrounds: polk R20
Subwoofer: polk PSW404
DVD: Panasonic DVD-S29 -
Mine did to, its either normal as others has noticed it or its a warranty issue.. I would call KEN at polk CS and ask to be sure.MY HT RIG:
Sherwood p-965
Sherwood sd871 dvd
Rotel 1075 amp x5
LSI15 mains
LsiC center
LSIfx surround backs
Lsi7 side surrounds
SVS pb12/plus2
2 Channel Rig:
nad 1020 Pre-amp
Rotel 1080 stereo amp
Polk sda 2B
kenwood grunt Tuner
realistic lab 450 TT
Signal cable IC -
Twice so far on my 404, strain on the cable has made it hum. Haven't figured out whether it is the sub or the cable. But both times, just unplugging and replugging the cable to relieve the strain, has worked.Win7 Media Center -> Onkyo TXSR702 -> Polk Rti70
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You most likely need to send the amplifier in for service, not purchase something else.
polkcs@polkaudio.comCTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint. -
Thanks for all the input, guys. You really can hear it from half-way across the room when the TV is off; my wife has confirmed this in case my ears were ringing. I've even tried several outlets via a 50ft. extension cord all over the place but still hum (again with nothing else connected except power). I would think if it was dirty power, at least something would be detectable on my other systems (whole house in-walls, home theater, computers x3, etc.) but I guess you never know for sure. So, how do I contact Ken? Does he check this board during only on weekdays? Thx.If we don't make it better, we'll sure make it different.
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I think it's humming because it's bored. Blast some breakcore on that puppy and tell me if you can hear any humming
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Any of the hardcore CS folks are more than able to help you @ 800-377-7655CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
