Box for two 15" subs.

[Hikato]

I've been tinkering with Torres' calc, and I was wondering if anyone could check out the specs I have. The box is for two Kicker CVR 15s ('03 model) then eventually for two DC Lvl 3/4 15s. Box will be in place of my back seat in my truck and be subs up/port up (unless subs forward/port up or subs forward/port forward is better)

Box dimensions:

- 30" height x 40" width x 15" depth

Port dimensions:

- 13.5" height x 8" width x 20.5" depth (port up with 2 common port walls)

With the displacement of the two Kicker 15s, I should have 6.45 cu. ft. net vol with 16.75 sq. in. port area tuned at 36.93 Hz.

With the displacement of two DC LVL4 15s, I should have 6.31 cu. ft. net vol with 17.12 sq. in. port area tuned at 37.34 Hz.

With the displacement of two DC LVL3 15s, I should have 6.39 cu. ft. net vol with 16.90 sq. in. port area tuned at 37.10 Hz.

I can go as wide as 50", but I'd rather not go more than 30" tall or 15" deep.

I'd appreciate any criticism/comments, just no flaming.

Edited August 10, 2011 by Hikato

[RAM_Designs]

If you plan on upgrading to level 3's or 4's, they're definitely going to like a lower tuning. Go as wide as you can and keep that height down.

[Hikato]

This box would also fit in the car I MIGHT be getting, that's why I was trying to keep it around what it's at now. If that would happen, I could face it port back subs back.

[RAM_Designs]

Don't do that, the back wall in a truck is not very rigid and will give a little instead of giving the sound something solid to bounce off of. Subs forward and port up has always worked well for me in ext cab trucks.

Edited August 11, 2011 by RAM_Designs

[Hikato]

I will run the box subs up/forward port up in the truck, but the box would be tall, and would fit in a car. I'd put it subs back port back in the car's trunk.

I know the tuning is a little high, but would the box be safe for my needs?

Edited August 11, 2011 by Hikato

[EBW]

I agree with ram subs front port up or even down works well but def subs forward. Nice kidney punch

[Blackedout]

I will run the box subs up/forward port up in the truck, but the box would be tall, and would fit in a car. I'd put it subs back port back in the car's trunk.

I know the tuning is a little high, but would the box be safe for my needs?

That box will be fine. It should sound good on everything @37 hertz. If you only listen to rap, I'd suggest tuning a few hertz lower, but either way It should work nice. Build a box to suit the application you're putting it in. Anything else may as well be called a prefab. A simple six sided box with no angles should take no more than 2 hours to cut/ assemble. Finishing work is really what takes up the time. Definitely go sub forward. What you do with the port varies from truck to truck.

Edited August 11, 2011 by Blackedout