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Amp replacement on Dahlquist PDQ1200 subwoofer


 

Does anyone have experience or recommendations on replacing the amplifier on a Dahlquist PDQ1200 subwoofer?
Mine is at a shop in Nashville and they are asking $350 to replace the amp, which they say cannot be repaired.

I am hesitant to pay for repairs as I only paid $125 for the sub to begin with. I actually have/had a pair of them connected
to my home theater (for which I use DQM-9's as the mains). I would buy another PQD1200 used if I could find one.
There is a PDQ1500 for sale on eBay, which I have considered, but not sure of the mismatch with it and my current PDQ1200.

Does anyone have a recommendation for an amp for this model sub? Since it apparently cannot be re-built, it would have to be
an aftermarket amp and not sure how that would affect the sound, which I like, even though these were not of the original
Dahlquist line. Thanks!

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