speaker hum after cd install

beaver2489

Founding Member
Feb 26, 2002
503
2
0
st. joseph missouri
my gf's dad put a new cd player in her grand am. When she turns the cd player off the right rear speaker hums really loud. like a real low bass, but bad. does it for about 6 sec right after she turns the cd player off. ground problem? right rear speaker wires + and - mixed up?
 
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