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box help please

Old Mar 13, 2005 | 05:54 PM
  #1  
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XXX15, 95 plymouth neon, enough power (1800rms+)

BUT, i only have approx 3.3 cubed to work with in total, which will be VERY little volume when you take out the sub and port volume

this is just an approx figure. 31 x 15 x 16. i got somehting like that to work with.

i want about 75/25 SPL/SQ and i listen to only rap and hip hop.

i need to make a box design for this.
wat are the disadvantages of this sub in such a small box?
can polyfill compensate for it?
should i jsut go sealed?

lets jsut pretend i didnt say the sealing thing.

anyways, what should i do?
wat should be my tuning frequency?
can someone help me design a box?
Old Mar 13, 2005 | 06:05 PM
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Id say go as big as you can sealed and use polyfill. Luckly the XXX series works quite good in sealed boxes.

I had a DD9515d in a small box like that. I tuned it to 35Hz and it sounded great until I turned it up too loud. Then the sub would bottom out and sound like there's a ping pong ball in the dust cap or something fugly.
Old Mar 13, 2005 | 06:20 PM
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but if i got a SSF will it still bottom out a lot?
Old Mar 13, 2005 | 09:16 PM
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Throw the specs on a box building computer software program, like Bassbox Pro. 3.3 cubic feet is probably LOTS really. I can help you out, if you provide me with the T/S parimeters
Old Mar 13, 2005 | 09:37 PM
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Resonant Engineering XXX 15 Dual 2

Fs - 29.0Hz
Re - 1.9DVC
Qms - 5.09
Qes - 0.64
Qts - 0.59
Sd cm2 - 1210
Xmax (1 way linear) - 32mm
BL - 17.1
SPL 1W/1m - 91.8
RMS - 1600 W
Max - 2500 W

[ March 13, 2005, 10:39 PM: Message edited by: hdave ]
Old Mar 14, 2005 | 09:57 AM
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are there any box building programs for free?
or with a 30day trial or somehting like that?
Old Mar 14, 2005 | 01:22 PM
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how does this sound?

external dimensions are 31x15x16
tuned to 36Hz


Box Parts (Square Prism)
1 Top, 1 Bottom: 15 (c) x 31 (b) in
0.75 (thick) in
1 Front, 1 Back: 14.5 (a) x 29.5 (d) in
0.75 (thick) in
2 Sides: 14.5 (a) x 15 (c) x 0.75 (thick) in

Vent Parts
1 Top, 1 Bottom: 4.5 (e) x 25 (h) in
0.75 (thick) in
2 Sides: 15.25 (g) x 25 (h) x 0.75 (thick) in


is that cool or should i forget all the ported and just make it a sealed box?
keep in mind i listen to ONLY rap/hiphop and i am looking for 75/25 spl/sq
Old Mar 14, 2005 | 09:45 PM
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anyone?
Old Mar 14, 2005 | 09:52 PM
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Although I have auditioned the XXX I have not tried it in a small ported design.

IMO, give the guys at RE a call and let them know your intentions and power. They will guide you in the correct path.
Old Mar 14, 2005 | 10:16 PM
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k thank you. i will be doing that tomorrow.

only problem is that its such a small box, i so hope that it works out.

ill let you guys know what they say.

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