box and port help

[yfz04450 0]

Ive got a single sp4 15 in a 5.7 cube box. It just doesnt seem to be as loud as it should. I dont really have a lot of space in the trunk. Right now its ported thru the seat and spose to be tuned to 35hz using round ports. Do i have the ports facing wrong direction cause ive tried a few different things and nothing helped. The usable room in the trunk is 34w 14h and 36d. And help would be great. Im new to this. But i can build a new box if need be

[ricksi30 923]

Can you post pics?