Need Some Help With Aero Porting For My 9515s Going In My Ford Ranger

[Th3pWn3r 10+ year member]

Hello, I'm planning on building a box using 4'' aero ports(I already have them). The problem is that when I enter my dimensions into the calculator I'm using I get negative port area. The box is for my DD 9515s and is going in my Ford Ranger, I was shooting for 5 CU FT. per sub after displacement with a tune of 35hz. The wedge design I had in mind was basically the max dimensions I could fit of 50'' wide, bottom depth being 16'', top depth being 11''(this just clears the seats) and a height of 36''. I know I won't be seeing out my windows in the rear but this is what it takes to get the air space I'm shooting for without doing a blow-through box. If anyone could help I'd appreciate it a lot, thanks in advance.

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[adulbrich 5,000+ posts]

You'll have to use a lot of 4 inch aero's for a pair of 9515's..

I'm using two 6" aeroports for my pair of 9512's in 5 cubes

 

[mlstrass 5,000+ posts]

Probably get away with 4 aeros. When doing your length calc are you entering in correct amount of ports? PSP calc is the one I use....

Also there's a show on the 14th in Chicago Ridge at Tilted Kilt....car show and USACI sound comp

 

[Th3pWn3r 10+ year member]

The odd thing is that I get that I should have 2.6-3.6 inches(maybe that's supposed to be feet? It doesn't actually show a ' or '' to note feet or inches) of port length for my 4'' flared ports according to calculators. So I'm guessing I'm doing something wrong with these calculators? This is for a tune to 35hz using 5 cubic feet of volume per sub. I used the 12volts, PSPs and some other calculator.