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Sup all, I was wondering what db i would be looking at with 2 DD9515's and an MMats D series on each of them,, each will go in a 6 cube ported box. Also since they will be going where the back seats were, should I fire the subs and ports up or forward. The only thing about facing them up is that the liner on the top of the car is sorta loose, and im afraid this will dampen the sound. any suggestions?
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If i have the subs and ports facing forward,, they will fire against the seats.. i will probably have about 8 inches to a foot between the seat and the sub. Is this ok, or do i need more space?