Could anyone give me the specs for a 18" Fi Bl ported box going in a Chevy Suburban. (Plenty of space.) 47 inches in width. More than that in length and height. I want a great port and the box to be tuned to around 30-35 hz. Please help me. Specs with pictures would really help. Thank you all. I am going for low freq's. along with decent mid freq's. I am talking about the box cutting specs. Please help me.

Edited May 19, 200916 yr by tripleb45

are you online now???

i am now

okay so this is an easy one,

build it 35w/20h/25d + 8.4cbs

make the slot port 4"w/23.5L/21.4"into the box so it is a basic L that will tune you to 32hz

and if your asking 21" port and the h is only 20" we ll ya make the L vent equal to the size needed. so the top length of the L will be 17 and the angle over bottom of the L or right side will be 4an1/8" dont forget to sand all internal points.

Edited May 19, 200916 yr by Mike Martinez

that work for ya

will try i thought about going 47.5 w 23.5 d and 21.5 h with the L port because i have so much space in the trunk will that work and still be tuned low? 30-35 hz

it will drop the tunning lower and that will be alot of air for a single bl how much power you puttin to it

about possibly 2000 watts rms should I go smaller

so that would be 11.7cbs port would change to 20.75 L / 6"w/ 11.7deep 32 hz

about possibly 2000 watts rms should I go smaller

2000 is fine i run 4800 to my bl 10's tunned to 37.2 hz

how do you know this? how do you calculate?

go to reaudio and use the box calculator and you can make it like you want.