Noisy Polk Audio PSW450
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michaelbill
Posts: 2
Hi out there is discussion-land...
I have a powered subwoofer that has become noisy at start-up. I used to leave it plugged in all the time, on "auto", and one day, when it was quiet in my living room, I heard a humming noise and followed it to my subwoofer. Since then, I've moved and now when I plug it in and turn it "on" or put it on "auto", its noisy and hums at start up. After a while it quiets down quite a bit, but not totally. So, I took it apart and looked at it. Couldn't see anything obvious. So, I just assumed it might be the filter caps. So I replaced them and the problem is still there. I would like to find the schematics so I can more accurately diagnose the problem with some testing.
Anyone have a schematic or know how I might go about getting one?
Thanks,
Michaelbill
I have a powered subwoofer that has become noisy at start-up. I used to leave it plugged in all the time, on "auto", and one day, when it was quiet in my living room, I heard a humming noise and followed it to my subwoofer. Since then, I've moved and now when I plug it in and turn it "on" or put it on "auto", its noisy and hums at start up. After a while it quiets down quite a bit, but not totally. So, I took it apart and looked at it. Couldn't see anything obvious. So, I just assumed it might be the filter caps. So I replaced them and the problem is still there. I would like to find the schematics so I can more accurately diagnose the problem with some testing.
Anyone have a schematic or know how I might go about getting one?
Thanks,
Michaelbill
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