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View Full Version : need help with a 18 box for trunk of a impala.



mtxfan4life
07-13-2012, 09:14 PM
I have a custom 18 mtx 9500 made by Psi. I need a 6-7cu ft box for it. Anyone have any suggestions.

mtxfan4life
07-13-2012, 09:20 PM
At 32hz

pro-rabbit
07-13-2012, 09:21 PM
What year Impala? Most likely be sub up and port to the side though...or sub up and precision ports to the back.

mtxfan4life
07-14-2012, 06:44 PM
What year Impala? Most likely be sub up and port to the side though...or sub up and precision ports to the back.

its a 2005 impala(old police car) i can fit 34 wide 16 tall and28 deep i was told but i think i can do a lil bigger than that.

double 07
07-14-2012, 09:56 PM
Those dimensions would net you about 5.5 cubes (double baffled) with average amount of port area (12 per) at a 33hz tune give or take a little........

mtxfan4life
07-15-2012, 12:45 PM
Yea but I'm thinking I can do bigger box in the trunk. Anyone have this car with a huge box in trunk

mtxfan4life
07-15-2012, 07:34 PM
I did some measuring and figured out I can get a 15.5 tall 30 deep and 36 wide that's 8.39 cu ft I'm gonna use that as my box size. Should I go ported or can I use the 2 4in aero ports from last box.

mazdakid
07-15-2012, 07:40 PM
you want more port area than that. can you use part of your spare tire well for the extra few inches of height you need? thats how i have an 18 facing forward in my civic.

mtxfan4life
07-15-2012, 11:01 PM
I was told that I should have a 10 in aero port for the sub but I really just want a slot port sub up port back. I just need to figure out all my cuts and how to tune the box right.

mtxfan4life
07-17-2012, 07:53 PM
you want more port area than that. can you use part of your spare tire well for the extra few inches of height you need? thats how i have an 18 facing forward in my civic.
No I can't use any of my spare tire area.