sanguine79
Member
I know this has been discussed many times but here it goes again. I gave a 98 k1500 with a 18" HCCA PSI sub in a box that's 8.75 cubes tuned at 32Hz. Im pulling the back seat out tomorrow. Now I can't decide. Sub up and port forward at the bottom of the seats or sub forward port up? Will it make that much difference? I just don't want to kill any sound by doing port under. It would fit more snug sub up which I like the idea of better. Less could damage the sub that way. Anyway, thanks for reading.