View Full Version : 18 fi btl n2 box design for trunk.

02-17-2013, 11:02 AM
Im needing help deciding what i wanna do. I currently have a american bass 200.1 a matrix 2 c&d batteries in trunk. 2 runs of 0g to trunk+1 4g for matrix and 4 channel. Big 3 is done as well. 180amp alt. Anyway im debateing on doing a aeroport this build but dont know what size to go with. Can anyone help me out with a nice box desihn or give me some ideas. Thank you

02-17-2013, 11:55 AM
Im getting a sp4 man.. FI make the best subs man.

02-17-2013, 01:09 PM
Im getting a sp4 man.. FI make the best subs man.

Ive never owned one before so hopefully i like it. Im sure i will.

02-17-2013, 02:27 PM
bro im telling you.. i have had hdc 3, xfls, 9500s,type rs,ect.. the btl is nasty. tuned to 29 hz..amazin, hits high notes crazy well and murder lows.

02-17-2013, 02:30 PM
if you can squeeze 4.5 - 5 cu, thatll be good but tun between 28-32. i would do aero port side fire with sub forward if your seats fold down

02-17-2013, 02:38 PM
I can slide up to a 7cu box in trunk with sub up. I do plan on haveing custom box made so sub fires into csr.

02-17-2013, 07:13 PM
For daily application what would be better slot port with sub up. Or aero port and sub faceing into car or sub in car port out the side.

02-18-2013, 02:56 AM
i'm halfway done building a box for a Fi 18BL.


square port tuned for 45Hz for SPL.
rectangular port is tuned for ~30Hz for normal use.

Plugs will be made for both and the 45Hz will only be used for comps.

02-18-2013, 03:32 AM
I prefer sub/port firing into car. I do oversized ports with a port reducer for daily & metering....

02-18-2013, 09:00 AM
Yea i gotta build box in trunk or build a 2 piece box... Whats a good sized aero port to use. 8in 10in. 2..6in 4 4inch. I have no clue about aero ports. But im learning

02-18-2013, 09:20 AM
Loud, efficient and in a Honda trunk