band pass box plans?

Hi I have 2 15" xtreme subwoofers from checker auto and i have them in a sealed box in the back of my 96 pontiac sunfire with a 1000watt pyramid amp hooked up to them.  would it make it louder if i put them in a band pass box in my trunk? If any one has any good plans to make a box could you please tell me the web site or let me see your plans for building a box.  or e-mail them to me.  my email is biker_boy6667@hotmail.com  thanks so much.biker_boy6667

you could have a one note wonder system. the problem with bandpass is volume needs to be much larger to hit the low freq's.. so to bandpass 2 15" subs you'd need one freaking big box. also you narrow the band at which sound is produced.. and you get one note that will be obscenely loud.. hence the "one note wonder" that is also commonly what SPL is referred to as. even going to a ported box you will increase the volume, my suggestion would be to look at the specs of the subs and go from there rebuilding the box based off the specs. not off wanting to build a certain "Type" of box2006 WRX STI

Electrical Engineer

Ohio University Alumni

It will also make them sound worse probably.99 Blazer LT.   Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

ok i found the specs on the subwoofers

• 1000 Watts Instantaneous Peak Power

• 2 1/2" ASV-Dual Voice Coil• 87dB Sensitivity• 4 OHM Impedance • Quick Connect Terminals• 67 Oz. Giga Magnet

would a ported box maybe be better than a sealed one?

biker_boy6667

With low-end subwoofers like that, the best bet is usually to use them as they come from the manufacturer.  But sure you can do anything you want with them; the likely outcome is they will sound worse and blow sooner, but they are cheap so go for it if you want.  By the way, the "specs" you posted are largely meaningless for designing an enclosure.Support the12volt.com

ok thank you for your help it helped me out alot.!! ill just leave them the way they are so i dont end up blowing them.biker_boy6667