I got a bandpass box with 2 12' subs in it. Is there any special adapter I need to hook it up to the Harman Kardon system currently in my car? How do I get to the Battery. My car is in my signiture. Thanx
he said it was called a line out convertor. you can try sounddomain.com i think they have good prices or just surf the net. they all basically do the same thing. take speaker level inputs and make them rca outputs.
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