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Hello I am in the process of trying to build a box for (4) diamond audio d110d4.2 subs I have.

I believe I need a 4.0 cu ft box which I believe the dimensions are

*(W x H x D): 33" x 16-1/2" x 21"

The only thing I do not know are the dimensions of the slotted port and how far away from the wall it should be or if any of you have a better box design it will greatly be appreciated.

I have all mdf wood and tools necessary to do the build and I would like it tuned around 32hz

ALL HELPFUL COMMENTS ARE REALLY APPRECIATED!!!
 

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Hello I am in the process of trying to build a box for (4) diamond audio d110d4.2 subs I have.

I believe I need a 4.0 cu ft box which I believe the dimensions are

*(W x H x D): 33" x 16-1/2" x 21"

The only thing I do not know are the dimensions of the slotted port and how far away from the wall it should be or if any of you have a better box design it will greatly be appreciated.

I have all mdf wood and tools necessary to do the build and I would like it tuned around 32hz

ALL HELPFUL COMMENTS ARE REALLY APPRECIATED!!!
Well assuming the box is 4Cu ft after all displacement. And you want it tuned to 32Hz here are some of your options.

Single round 4" 5.18"
Dual round 4" 13.28"
Tri round 4" 21.39"
Quad round 4" 29.49
Tri round 3" 11.48"
Quad round 3" 16.28"
Single round 6" 13.85
Dual round 6" 32.08"

As for some slotted options.
10x2x8.51
10x4x20.68
12x2x10.36
12x4x25.11
15x2x13.13
15x4x31.75
20x2x17.75
20x4x42.82

These ports assume their potential displacement has been accounted for or is not affecting the internal volume.
 
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