Without going over my windows and taking the whole back up, i have 40" D x 46" W x 22" H, which is 11.8 cubes gross, will that be enough for 2 BL 18's? It says to use 5-10 cubes each, thats a wide range, i guess depending on power to them mostly. I will be running 2 saz1500d's strapped to them. I have more room than that if needed, just want to leave a little space for batteries and amps.

after doing some better measuring, i have 46.5" W x 24" H x 30" D, which is around 16.5 cubes gross, after sub and port displacement will that be enough

That should be plenty. If you can give each sub around 6^3ft each, that would be ideal. Then you have 4^3ft left over for port and subwoofer displacement

I did not know for sure what you were putting this in, and what tunning you wanted, but this is what I came up with using your info.

Hope this helps

Jay

its going in 97 expedition and want it tuned around 32-34hz. I think the second post i made is going to work out pretty good. I will order subs and anothe 1500d next week and hopefully start box by monday.

If you guys dont mind me asking..jayson what program did you use to make that design fo that box

that program looks like google sketchup, i downloaded it, but what i have made on there looks nowhere near as good as that. I have played around with it some, but need some time with it.

would i be better with port like that in the middle or 1 that goes all way across box. thanks jayson for design also