Im geting 2 12s and 2 15s. I am going with the V-max's for the subs. I want i loud i drive a 1992 Chevey lumina they will be going in my back seats i have already taken them out and have a bandpass box and fiberglass pannals made to make it look like it takes up the whole back seat.So i have a shyt load of room for a box. But what kind sould i go with Bandpass 4th or 6th order,sealed,or ported? thanks for ur help.