subwoofer cracking and popping noise

jimboraver77

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Jan 6, 2018
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hi all, been having trouble with my subwoofer, as in it makes a load cracking and popping sound, this happens randomly so is very intermittent and annoying. Any suggestions would be appreciated thanks. james
 

jimboraver77

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Jan 6, 2018
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sounds terminal ! thanks for your reply though, would this also happen when the sub isnt receiving a signal, ie, when only the power is turned on but no audio signal ?
thanks
 

Karadjgne

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Dec 26, 2012
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No. The coil is a mile of copper wire wrapped by a huge magnet. When you send a deliberate signal to the coil, it moves in response to the magnetic field produced. Without a signal, the coil doesn't move as there's no frequency to make it move.

If the speaker is emitting cracks/pops without a signal from the deck, then there's something else interfering and creating a signal. Usual suspect is a bad ground on the amplifier creating backfeed, abraided/ungrounded/unshielded signal wires allowing certain frequencies to enter etc.

Usually it is a burned voice coil, but only usually. Sometimes it is something else. Check all wiring, move any signal/speaker wires away from power cords etc. If it's a household powered sub, check the outlet it's plugged into, the plug should be tight, not loose to plug in. Check the deck power outlet too.
 
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