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  1. Chimney port to 6x9 holes?

    Technical & Advanced Car Audio Discussion
    Hello again, sorry if this has already been discussed I tried searching but couldn't find any topics like this. I'm trying to get the most and lowest bass out of my 02 civic using 3 12" subs ported. My current idea to get the best transfer function possible, is have my 12" subs facing the rear...