im putting 4 12" RF T112D2 in my 2002 4dr blazer and this the box that i have come up with and i was juss wondering if someone can double check my math for me on this one

interior dimensions are 35.5 x 33.5 x 14.75 . . . 10.15 ft^3
port size 25 x 4 x 11.75 tuned to 36hz
port displacement 26.5 x 4.75 x 10.25 . . . 0.75ft^3
4 sub displacement .32 ft^3

10.15 - .75 - .32 = 9.08ft ^3

is this math correct?

also i am firing the port upwards cuz the box takes up the entire cargo area so i cant fire it backwards

 

the maths spot on

 

thx you, also should this box pound pretty good, and would it get low notes or is the tuning at 36 alil high?

 

That should POUND! What kind of amp(s) you going to be running this with?

 

make sure you have internal bracing or that box will flex hahahaha

 

im goin to be using a RF T20001bd and yes the box has internal bracing

 

to be ...don't forget to account for the bracing as well...though I doubt you'd be able to hear the difference due to the volume difference. If that doesn't pound...something is definitely not working properly, or hooked up wrong...that has to pound by any definition of pounding!!!