Ok, this is a situation I'm dealing with currently. I'm removing the foam from all doors, then using dynamat xtreme to replace it. The holes in the doors do not allow the front and the back of the speakers to be completely isolated from eachother. For bass response purposes this is bad. The sound waves from the fromt and back of the speaker are oposites, and if they are allowed to reach eachother, they'll cancel eachother out. Also, the foam stuff does very little to combat road noise.
------------------
Nick,
'99 Contour, Zetec, ATX (ugh), Light Blue:
Sidemarkers, clear corners, badgeless, custom mesh grille, interior neon lights, CEG stickers, ventvisors, Radar Detector, KKM, no rez, Straight pipe muffler, Focussport wires, Accel super EDIS coil, more to come, No back seat, Lots of Dynamat, Panasonic CQ-DF800U, Kicker equipment: 2 ZR 360's, 1 ZX460, 1 ZR240, 2 Solobaric L7 12's, 1 resolution 6.5" component set, 1 pair of impulse 5x7's; All wiring by Phoenix Gold; DEI Python 1000 ESP Alarm
