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I just picked up a used Klipsch SW15 powered sub. I already have an SW12, and it moves a decent amount of air when turned to 3. The SW15 is basically the same thing but 15" and bigger amp. (seller will give money back if I necessary)


Problem: the SW15 seems to work, but it seems to be only running at about 5% power. (Supposed to do 110dB SPL, but it is not doing much at all, even when turned to 10.)


Thoughts on what might be wrong?
 

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What level is it adjusted to coming out of your AVR?
 
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