Enclosure for 2 15's in a SRT Magnum

[fli_noize]

My buddy has a couple of 15" Obsidian Audio subs laying around collecting dust so I figured I'd put them to use while I save up for my real system. The dimensions I'd like to work within are 39" W x 17" H x 19" D. These subs want a min. of 2.5 each ported, but a maximum of 2.5 each sealed. I'm wondering if I should build a optimum sized sealed enclosure, or a minimum sized ported enclosure? I've always been a fan of ported and would prefer this route but would still like to hear opinions. If I go ported anybody interested in doing a quick little design? All of my box building software is windows based and I don't have access to a windows computer right now. They will be running off a Crescendo BC2000D at 1 ohm. Specs for the subs below. Thanks in advance!

Re: 4.0 Ohm

Fs: 31 Hz

Qms: 2.9

Qes: 0.76

Qts: 0.61

Vas: 81

Le: 4.36 mH

BL: 18.18

SPL: 87 dB

Sd: 856 cm^2

Mms: 321 g

Xmax: 20mm

Peak-to-peak: 62mm (2.45")

Power Handling: 600 watts RMS

Recommended enclosure info:

Sealed ~ 2.0 to 2.5 ft^3

Ported ~ 2.5 to 3.75 ft^3 @ 28 to 32 Hz

Cutout: 14.0"

OD: 15.5"

Mounting depth: 8"

Mounting flange to top of surround: 1.5"

Displacement: 0.19 ft^3

[Skullz]

Don't do either as you won't get optimum results with it, get a pair of 12's in an optimum enclosure and call it a day.

If your insistent on 15's then do one 15" in a proper enclosure and you'll be louder than a pair of 15's choked in that trunk.

[ZachG]

Don't do either as you won't get optimum results with it, get a pair of 12's in an optimum enclosure and call it a day.

If your insistent on 15's then do one 15" in a proper enclosure and you'll be louder than a pair of 15's choked in that trunk.

It's not a trunk..its a wagon.

You could fit the 2 15s ported if you give more height cause you do have more available

[IH8PunkRok]

a little hint

ive been loudest sub forward port side

did a 147.2 sealed on the dash with 2 AB XFL 15s subs up port back on 4k

did a 148.6 sealed on the dash with 2 PPI crap 15s (one already blown) subs forward port side on 4k

both of these setups had 2.75 cubes or less per 15 as well. musical setups

[quakecitystudio]

I've got a design, it's a quarter wave t-line for a single 15 and box spec may change to accommodate -

Surface area of speaker - 15" = (7.5) • (7.5) • 3.14 = 78.5

Width of box - .75 +.75 + 17 = 18.5

height of t-line to match speaker surface area - 78.5 / 17 = 4.617 or 4.5 inches

Total height of box = .75 + .75 + .75 + 4.5 + 4.5 = 11.25 inches

Total measurements = 39 length x 11.25 tall x 18.5 depth

length of line = 39 - .75 - .75 = 37.5 inches

Frequency - 37.5 • 2 = 75 in / 12 = 6.25 feet. 6.25 • 4 = 25. 1130 speed of sound / 25 = 45.2 hz

[fli_noize]

Thanks for the input. Like I was saying I was just throwing this stuff in because it's sitting around collecting dust and the BC2000 is just hooked up to nothing in the car with the fuse out. I just want something to bump some bass while I save up for the other goodies. I'll double check the height again I really don't want it to be too much above the rear seats. Only thing this build should cost me is $40 in MDF that's why I was even entertaining the thought. Future Plans will be a single 15 on 3-5k ported.

[fli_noize]

Accidentally double posted...