need help with a 18 box for trunk of a impala.

[mtxfan4life]

I have a custom 18 mtx 9500 made by Psi. I need a 6-7cu ft box for it. Anyone have any suggestions.

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[mtxfan4life]

At 32hz

 

[pro-rabbit 5,000+ posts]

What year Impala? Most likely be sub up and port to the side though...or sub up and precision ports to the back.

 

[mtxfan4life]

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 10+ year member]

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]

Yea but I'm thinking I can do bigger box in the trunk. Anyone have this car with a huge box in trunk

 

[mtxfan4life]

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 5,000+ posts]

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]

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]

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.