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thumping from subs going from acc to on

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Topic review
   

Expand view Topic review: thumping from subs going from acc to on

by MobileAudio219 » Thu Oct 29, 2009 7:46 pm

Ground or RCA issue... Probably RCA!

thumping from subs going from acc to on

by MrSo0h0o » Thu Oct 29, 2009 12:59 pm

whenever my car is in the ACC position and i crank the engine to turn on, my subs thump. This does not happen when regularly starting the car. Is this a ground issue? If so, why would it not do it when regularly starting the car?

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