8w7 Box Design HELP!!

[Tercel-R]

Trying to build a proper tuned box for my 8w7 being powered with 500watts rms. Only problem is my car has fairly limited trunk space so I would like to build a slot ported box with an angled back. This picture shows pretty much exactly what I want to build.

Criteria:

-1 cu ft with 12 sq in of port

-tuned to 34hz

-width 26in max

-height 12.5in max

-material will be 3/4" birch

I've been finding it a bit difficult to figure out the port dimensions..hoping to get some help!

[larrys95civic]

what depths are you working with, top and bottom, if you did 6 at the top and 10 at the bottom that would give you 1.01 cubic feet before displacement and port area (with the height and width you gave us)

[larrys95civic]

Oh and if you could just offer up a please and thank you instead of a bunch of !!!! that would be great. thanks

[Tercel-R]

I would like keep the depth as shallow as possible and use a 15 deg angle for the back which would be a 3.5" difference from the top depth from the bottom depth.

I'm afraid that the 26" width won't be long enough to get the 34hz...

[larrys95civic]

So any depth will work then?

[Sonic]

Why dont you use a 3" diameter aero port? You would save alot of space.

[Tercel-R]

Thanks for the tip, I didn't realize how much space I can save with an aeroport

[Tercel-R]

I worked on the dimensions a bit more and this is what I came up with using a 3" aeroport at 15.83" long.

Box size is 26" wide, 12.5" tall, and the two depths are 11.33"/8"

[Joe X]

Similar alternative with increased port area and reduced side clearance using 3x2" PVC pipe:

Some bracing to the pipes not shown, sub and port locations are approximate.

[Sonic]

Joe 's recommendation is excellent, I like the way he use those 2'' pvc pipes to gain increase port area over the 3'' aero port, also, which allows for the sub to have enough clearance to be over the ports instead of being just next to the port inlet.