What happened to my sub?

gorgon

Hello. I have a PSW450 sub that has been diagnosed with a bad amp board. This unit is connected to a Yamaha VX(?)793 receiver and I DON'T abuse my system. My questions is: what could have happened? I live in a fairly old house and wonder if my power is dirty and spikes may have damaged the board. I have no proof of this but wonder just the same.

By the way, how much is a new amp board?

Thank you,

-Dave

[Deleted User]

Hello Dave,
I'm going to assume you've owned your sub-woofer less than three years, correct? If so, you would want to remove the amplifier from the sub-woofer's enclosure (take out the 12 Phillips head screws that go around the circumference of the amplifier's input plate and pull the amplifier away from the cabinet and disconnect the two wires, one red and the other black, from the 10" woofer). Send the amplifier to Polk Audio, 2550 Britannia Blvd., Suite A, San Diego, CA. 92154. Please include a short note giving us your name, address and a copy of your sales receipt.
If you live in an area with frequent thunder storms or electrical interruptions I would consider a good quality AC line conditioner with surge protection. Such as Adcom, Panamax or Monster Cable as an example.
Regards, Ken Swauger

gorgon

Thanks for your reply, Ken. I should have mentioned that my first action was to check my receipt/warranty info. and I am about 3 or 4 months past my three year warranty. Most disappointing. Still, my other theater speakers are Polk and I am amazed at their fantastic performance so I just want the sub fixed. There is a repair specialist in my area who has quoted me $280 for the amp replacement. I knew it wouldn't be cheap but, admittedly, that's almost double what I thought the cost would be. Thank you for the power conditioner advice. I'll look into it immediately.

-Dave

Originally posted by Kenneth Swauger
Hello Dave,
I'm going to assume you've owned your sub-woofer less than three years, correct? If so, you would want to remove the amplifier from the sub-woofer's enclosure (take out the 12 Phillips head screws that go around the circumference of the amplifier's input plate and pull the amplifier away from the cabinet and disconnect the two wires, one red and the other black, from the 10" woofer). Send the amplifier to Polk Audio, 2550 Britannia Blvd., Suite A, San Diego, CA. 92154. Please include a short note giving us your name, address and a copy of your sales receipt.
If you live in an area with frequent thunder storms or electrical interruptions I would consider a good quality AC line conditioner with surge protection. Such as Adcom, Panamax or Monster Cable as an example.
Regards, Ken Swauger

[Deleted User]

Hello,
If you want to telephone me at 1-800-377-7655 extension 891 or email me at kswauger@polkaudio.com I'm sure I can be of help.
Regards, Ken