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

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 )


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

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).

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.

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


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