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View Full Version : Cu. Ft. Box Volume - Quick Question



guitarman626
04-11-2008, 11:00 AM
I already posted this thread once, but under the wrong catagory. Sry for the double

I'm getting 3 15" JBL DVC 4ohm subs.

All three subs are in a single ported encloser.

i read on the website im buying my subs from that for that type of sub, the ported box volume should be 3.50 cu. ft.

I should have at least 4.50 cu. ft. in my box, but PLEASE tell me that the cu. ft. recomendation means that:

1X15"s=3.50 cu. ft.
--------- -------------
3X15"s=3.50 cu. ft.

If this is not correct, and 3X15"s=11.50 cu. ft. then I'm screwed and my box is worth sh*t : )


Please only respond if your sure of your answer!
Thanks,
-Cade

GnFnRs
04-11-2008, 12:14 PM
normal 15's are around 3.5 per sub. and i am sure that it's 3.5 per in yer case. also figure in port volume and speaker volume. yer gonna be at or above 4cuft per sub. i'd even go as far as saying that if you build a box 3.5 that you'll have a helluva time fitting 3 15's into it.

guitarman626
04-11-2008, 05:12 PM
Ok, thats a load off.
And yea, your right. I wents and measured and I think I have around 6 Cu. Ft. Including port area.

Thanks bro,
-cade

WOT
04-11-2008, 05:15 PM
How is that a load off? Your subs need 3.5 EACH. You have a 6 TOTAL. Thats not good, thats starvation. I dont get where you read in his post where he said you were ok with what you had lol

goonandbuck
04-11-2008, 05:16 PM
no you need 3.50 PER SUB, so three subs will be 11.50

WOT
04-11-2008, 05:28 PM
He didnt catch that lol, 11.5 cubes is a BOX box after port and sub displacement, hope u got an suv

Kind of an important spec to overlook dont u think?