help with box design

[just1moreamp 0]

need some help with a box for a 98 explorer for 2 15'' crystal cmpx215 wood like it ported to 26hz r 30hz i have 41''w 18''tall 20''deep wood like to do 4'' pvc pipe let me no if you can help me out i think i have about 7.4cf i wont to do subs up and ports back i think

Edited May 27, 2009 by just1moreamp

[johnecon2001 82]

Do you mean "would"?

[AlanHall 6]

How come you want it tuned to 26hz? And if your heart is set on 4inch ports, your going to need like 7 of them ??. Are you just not sure you can handle building a slot port or just dont want one?

Edited May 27, 2009 by AlanHall

[just1moreamp 0]

i have never done a ported box and just thought it would be easyer to do pvc the first time it does not have to be ported to 26hz--but would like it to be around -26hz to 30hz- i have 4- 8'' drivers and 4- 6.5'' the 8'' r under my back seat and 2 of the 6.5s r in the kicks and in the bottom of the back doors and i have 6.5'' comps in each door in the factory 6x8-openings-runing on mmats-sq4070-and-linear power-2202s---just need some more bottom end and thought tuneing it lower like 26-30-hz would be fine but i dont no any help would be nice and thank you will be runing orion 2100hcca amp on ea sub if that helps

[sqjeep 9]

The manufactor says 3cuft box with a 4" x 13.5" aero port... That would be tuned at 26hz with and f3 of 25hz

here is the link to the manufactures page

crsytal cmpx15

[AlanHall 6]

lol there you go. I personally wouldnt build that . But if they say it works i guess it will.

[just1moreamp 0]

lol there you go. I personally wouldnt build that . But if they say it works i guess it will.

well can you tell me what you would do with this sub setup if you have a better box inmind that will sound good and pound hard any help would be nice ? i was told by someone that i would need to do a box that had 4.5cf ea sub and two 4'' pvc ports 17'' long for ea sub what do you think-just let me no

[AlanHall 6]

i had just at 10 cubes for my 2 15s in my 95 explorer and it slammed a 4inch port is just 12.56 of surface area so im thinking 4 16inch would be much nicer in there "guessing" ..around 16inches long. i had 2 kove armageddon z which might not me much different a woofer? i do as close to 5cubes for my 15 boxes as i can. also in suvs i run my port up for music boxes . if your heart set on a rear fire port make sure you have room between the enclosure and the tail gate.

Edited May 27, 2009 by AlanHall

[just1moreamp 0]

so you think i should do a commman chamber box r do a box so ea sub is in its on airspace --and do 4--4'' ports for ea sub -r- 2--4'' for ea sub---just need to get it done soon will have to go back to work in 5 days and thats 7/12s no time for fun for the next 3 month's ---is there something wrong with port back and subs up---thanks alot man for any info

[AlanHall 6]

i just think that the port back is punchy and boomy sounding . but IMO all up is a depper flowing bass like jeezy and stuff has in it . common chamber should be fine. But id get away from the 4 inch ports and just get 4 6inch. or yes 8 4inch