View Full Version : 4th or 6th or ported box for 8 12" JBL GTO1214 in bmw 320i coupè E36

05-24-2012, 10:54 AM
Hi at all....

my english is very bad, because i'm italian....

I wanna mount in my 320i coupè e36 8 12" JBL GTO1214 with n.2 bpx 2200.1.
What kind of load do you advice me?

THNX at all...


05-24-2012, 11:03 AM
You dont have enough air space for a 4th order or 6th order for 8 12" subwoofers. You MAY be able to get a regular ported enclosure in there, but I doubt it.

05-24-2012, 12:27 PM
even if the gto 1214 has a low vas(2.05 ft3)? How many liter i need?

05-24-2012, 12:43 PM
Also consider complex box needs a lot of wood. Every sheet of 3/4 inch wood you use = 2 cubic feet, bracing will take up volume as well. I would say just the wood and bracing for a box big enough for that many woofers will be 6 to 7 cubic feet!

I think you may be able to do them in a regular ported box. Really I would advise against bandpass for such a large build since it will be very easy to get wrong and very permanent.

05-24-2012, 12:44 PM
12 - 8" maybe but 8 - 12" fughedaboutit (forget about it)

05-24-2012, 06:58 PM
:crying: Instead we think!! i wanna mount 8 12"!!!!!! help me!!!!! :suicide:

05-26-2012, 03:36 AM
I think I need at least of 12 cu ft for the ported box....
you think that dimension of the port to give the best with the hip-hop?
thnx Thanks for your patience ;-)