what is this box tuned to?

I have tried WinISD but its way to confusing.

I have also tried bass box pro and its also pretty confusing.

I do need to find a program where I can make the port in the middle instead of just on the side

Alright what about this one.



External Dimensions: 38 wide x 18 tall x 22 deep

I'm coming up with 32 hz at 5.5 cubic feet. Is that right?

And would this kind of design work good in a suv? I know sub up and port back is usually best for an SUV but what about having the port on just one side instead or running across the bottom.

Off a little. I got 6.13 cubes @ 29.7Hz. The design itself will work good in many applications. Running a single port on one side is fine as well.
-Bill-

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Could you try calculating the driver displacement in. Its two 15" cvr. The displacement of each sub is 0.14 cu ft. So of course 0.28 total. Maybe that is where the difference is.

6.13 - 0.28 = 5.85 cubes @ 30.3 - 30.4Hz with subs in. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif I'm off to bed now. Gotta' get up in a few hours.
-Bill-

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Thank you for all your help!

I wonder if that would be good for the two cvrs or is it too low?

The size is about right. I'd toss in a small amount of polyfil. As for tuning.. I (just my preference) would aim for about 32Hz, but who knows? Regardless, it should shake pretty good on 1200 RMS or so.
-Bill-

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32 is what i was really what I was shooting for.

If I change the port width to 4.75" that would put it at about 31.3 wouldnt it? or change the port width to 5" would put it to 32.2?

Here...I made a few changes: