Solved! Popping subwoofer

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Jun 18, 2020
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I have a subwoofer that pops when not receiving a signal. The subwoofer works well when receiving a signal from the receiver. But when the receiver is off and the subwoofer in on/stand by it makes a popping sound periodically.
 
Solution
Disconnect the subwoofer input cable from the sub. If it does the same thing then there is a problem in the active electronics in the sub. Could be a bad capacitor but overall not a user repair. Contact the manufacturer.
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