I'm "helping" my buddy with his box, even tho we are using most of my tools and my garage and electricity but o well. He's got a ~96 Buick Century that is literally falling apart from the system AND accidents...
He doesn't listen to me when he buys his equipment, so he bought a SPL 5500D amp, that supposedly puts out 3200rms @ 1 (4 awg power/ground) and he bought two SPL SPLW15"s that are.. well... they dont sound that good.
Here is a pic of his last box that i built, 5.0cf tuned to 30hz, was originally for his Type R 12"s (which were loud as **** in it, he should of kept them)... its kinda small for the 15"s
and here are some of the build were doing now, it will be right around 10 cubes ported probably using 4 4" PVC ports. The subs will be firing into the cabin. apparently he doesnt want the back seat at all anymore, but i have other ideas, pics will follow when that happens...
This box will be built in two parts to fit better in the trunk, they will be siliconed and bolted together when he puts both boxes in the trunk. only leaving about 2 - 3" of MDF on the inside for the bolts/silicone to connect the boxes.
back half of new box:
pic of empty trunk (with my **** truck to the left )
plexi for the back part of box