Speakers back woofer makes weird crackling noise during bass, turned speakers off and pushed it by hand and it also produces the crackling noise, can anyone help? - Quora
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Why subwoofers blow: slam, bang, pop, and sizzle
Weird noise coming out of only subwoofer and not speakers : r/logitech
How Do You Tell if a Home Theater Subwoofer Is Blown?
Weird sound when sub hits lower frequencies. This is a pioneer sun with one active in the front and a passive on the bottom. I thought maybe the passive was hitting the
Subwoofer Making Your Room Rattle & Vibrate? Try These Fixes. – SVS
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