Originally Posted by NickZac

Dynamat is a material that absorbs sound and keeps all of your internal parts from vibrating and sounding like crap. For my system, I paid 500 for a floormodel KX1200.1 that normally costs 800, 200 for a Kicker 12 inch solobaric L7, 250 for the box, 150 for wires, 80 for a capacitor, 200 in dynamat, and 100 for Optima Yellow Top Battery. I got all those parts as I went along.