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View Full Version : help with two 05 alpine type-R 12"s



b_mcdonald3
05-09-2005, 07:19 PM
I just bought two brand spanking new 500 RMS type r 12"s and a JL 1000/1 to slam them.

I wondering if anyone can score me some dimentions for a slot ported box for them.

also would it be better to have a sealed or ported box for inside a hatch back car that is missing the back seat ( in the open car visiblly behind you )


thanks,
mcdonald

kenwood new 1.5 spacing set in screen
alpine V-12 (old not digital) powering two alpine type-r 15"s
JL 1000/1 powering two 05 alpine type-r 12"s
kenwood 1000w amp powering alpine 6x9's
pioneer 760w powering JL highs
all alpine door speakers
two 2 fared caps digital blue
two alternators
one 1 fared cap

XtrmAudioCncpts
05-09-2005, 07:51 PM
its kind of hard to say we need to know who much space we are working with and what you want to tune your subs to(if you want ported).

LightningStryk7
05-09-2005, 11:17 PM
Well I got 1 alpine Type R in my little neon in a 3 cube box tuned to 33hz. I still got a little bit of room, so im guessing u could get at least 2 cubes per sub. But anyways I used to run my Type R sealed. Ported it sounds much better.

Kaboob
05-10-2005, 12:38 AM
My peticular specs, tube port....

External measurements: 33 x 15 x 15.844126984126982

Desired internal volume: 3.53 ft3

Thickness of box material: .75 in

Displacements: 2 3x3x3 boxes 0.015625 x 2 = 0.03125
.75 x 15 x 15.844126984126982 = 0.10177651014109346

0.10177651014109346
0.03125
___________________
0.13302651


3.53 ft3 - 0.13302651 = 1.7 ft3 per box w/o displacement

3 inch diameter pvc cut to 9.9 in in each box