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Original Message

RE: Why do subwoofers thump when turning on power amp?

Posted by John Elison on April 12, 2017 at 20:15:42:
My Parasound A21 has an auto on-off function that can be triggered by music or by a 12-volt trigger. However, I have simply been leaving it turned on continuously for the past two or three years. It's a class A/B amp and barely gets warm without music playing. We'll see how long it lasts but it's been doing fine so far. ;-)

Best regards,
John Elison