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Help for (2) 15" HDC4's


Mr DeeBeez

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I am trying to design a box for two hdc4 15's to go in my 2001 blazer. I have messed around with a couple different box calculators, but each one gives me different numbers. I want it to be subs up, ports back. Tuning around 37. I will be using (3) 8" aero ports. Power will be a sq 3500 at 1 ohm for now, eventually two 3500's

 I want the width to be 38.5", depth to be 29-30", and the height can be adjusted to best box volume. Recommended volume is 3.75 - 5 cubes, so think about 4.25 will be best for my power. 

In torres, with height 20", port lengths 24", I get a tuning of 37hz, net volume of 8.7, But I am not sure I was putting in all of the info correctly when dealing with an aero port. 

Anyone able to help me out? Is there a better program to use?

Thanks in advance!

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