[Xxx 15"]

This will just be a drop in box for SPL only, i`ll hang on to this box and may just have to drop a 2nd woofer in it sometime, or just cut it down. thanks for the suggestions `Boon` and cheers Mike.

My friend had a Commy wagon, don't know the exact model, fully dynamatted, was doing 147.5 at 48hz with 2 T4-12's and 3kw.

Setup was like 3 cubes, 1 6" aero.

Try subs forward port forward (if your box uses the same face for both) with the back seat up. Was loudest for him.

[T/s Parameters For Soundstream 18" Xxx?]

Specs are for the 18" a XXX15 has a cone diameter of 12.220 according to the spec sheet soundstream sent me.

Also the subs posted are 15s not the 18s

and in the T/S parameters, wtf is up with a 13.77" diameter? still think those specs are on the 15"

13.77 sounds like the cone diameter of a 15" cone

[T/s Parameters For Soundstream 18" Xxx?]

T/S Specs XXX-18 new!

Fs (hz) 22.29

Qms 5.866

Vas (3ft) 5.504

Cms (mm/n) 0.119

Mms (g) 430.2

Rms (kg/s) 10.23

Xmax (mm) 30.00

Xmech (mm) 40.00

Dia (in.) 13.77

Sd (2in) 149.10

Vd (3ft) 0.136

Qes 0.191

Re (ohms) 1.20

Z (ohms) 1.2

BL 19.47

Pe (watts) 10000

Qts 0.185

No 0.875

1w/1m SPL 91.40

2.8v SPL 99.81

VC DIA (IN) 4.0

VC (Ohms) QVC 1.2

M-vd (3ft) 0.6000

Cut-out (in) 16.750

Depth (in) 11.125

Min. Sealed N / A

Qtc N / A

F3 N / A

Opt. Sealed N / A

Qtc N / A

F3 N / A

Max. Sealed N / A

Qtc N / A

F3 N / A

Min. Vented 4.00

port (4) 4x15

Fb 49.91

F3 43.54

Opt. Vented 6.00

port (3) 6x13.5

Fb 50.00

F3 42.71

Max. Vented 8.00

port (4) 6x12

Fb 49.84

F3 42.24

[2 12's Or 2 15's.]

I have 2 x 12" T-4`s in a enclosure 30 x 28 x15 external dimensions, 32 mm thick all round so approx 5 cbft less sub displacement, i used 4 x 100mm pvc ports.

[Xxx 15"]

As you can see, first time poster, and after reading through previous related posts i`m a little concerned regarding box and port size for my sub, as posters mentioned very little room for error with this sub and frying a coil is not on my agenda whilst deciding configurations .

Presently i have a box with internal measurements of 14"h x 32"d x 23"w coming in at approx 5.9 cbft.

Sub will be firing upwards and ports facing horizontal.

I have 2 end baffles one containg a single 9' port and the other containing 2x 6.5" ports, any help deciding which one to use would be appreciated or maybe both of them are unsuitable?.

This sub will be powered by a DD Z2LV amp so juice shouldn`t be an issue.

My vehicle is real happy at 40-42hz

I have enclosed a pic of my previous enclosure to give you some idea of what vehicle i plan to put this new box in, thanks for your time.