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Re: Powered Subwoofer

Timo Posted Apr 21, 2006, in response to:Frank J. Brown

R3 type in use is 22 K ohm and also use 100 K ohm ??? so wtf.. large scale? say`s service i ask it

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    Re[2]: Powered Subwoofer

     Ketil Posted Apr 26, 2007

    Hello! I have the same problem with my Sub. The circuit-board is burned and the heatsink become very warm and there is light hum in the woofer -speaker. R3 is burned. Yesterday, the sound at idle(no music at the input) suddenly start to 'wobling'(sounds like; flop-flop-flop) and I had to disconnect the unit. I'd like to repair it an wonder if you have found any electrical schematic that can halp me(us)? By the way; the two capasitors C20 og C21 connected from the two rectifier input terminals to ground, which you have discussed, are not defective on my circuit-board and they have the marking: 471 1KV (470pF and 1000volt). Best regards Ketil Walaker Norway meskem@online.no

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