3 alpin type r 12.... need help

[Hmuvee]

I have a 1995 park avneue.... for now I want to run 3 type r 12's in a ported box.... the box can't be no taller then 16 inchs... and have about 45 inchs wide .... n 24 inches deep... need how on box specs n port size n etc

[Joe X]

Welcome to SMD, here is a suggestion for 3 SWR-1243, input power about 2.2KW:

Enclosure Specifications:

Fb = 33 Hz
Vb = 6 ft^3

External Height = 16 in
External Width = 45 in
External Depth = 22.5 in

Port Width = 5 1/2 in

Cut Sheet List:

* All Dimensions in Inches.
* Wood Thickness is 3/4 for all Parts.

External Enclosure Parts:

Front = 38 3/4 x 14 1/2
Front Internal = 37 1/4 x 14 1/2
Back = 45 x 14 1/2

Left & Right Sides:
Side 1 = 21 x 14 1/2
Side 2 = 21 3/4 x 14 1/2

Top & Bottom = 45 x 22 1/2

L Port Internal Assembly Parts:

Front to Back = 15 1/2 x 14 1/2

Assembly guide (generic dimensions):

Important notes:

- The 45s if you want to do them are 2 1/2" wide except the one/ones inside the port, if you want that let me know.

- All boxes built outside the car need to fit in their way in not just have the right dimensions.

- The port needs 5 1/2" of free airspace in front of it for proper operation.

- Setting your amp subsonic filter to 28Hz is suggested.