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Ok let me give you all the info. I live in japan and they use the metric system for MDF so I try don't have quite 3/4 inch MDF. What they do have is 18mm MDF which is as close as I am going to get here. I drive a 1994 Toyota hilux surf (4runner). I am going to have a 270a DC Alt under the hood with an optima red top under the hood and 2 hc2400s in the back. This will be powering the new DC 5K amp. I am going to be running 2 DC lvl 4 XLs 15s. I want to build a box with subs up and port towards the back. I was wondering if some one could help me design a box or design a box for me. I do not want to invest all this money and not have a properly designed box affect the system from operating at optimal level. I would appreciate any help and input.

Edited by bre2ts

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1 inch = 25.4 mm

1 mm = 0.0394 in

so 18 mm = 18 X 0.0394 in = 0.71 of an inch (just over 7 tenths of an inch)

And since decimal inch rulers aren't readily available, you'll have to convert to fractional 16ths:

Multiply 0.71 x 16 to get the number of 16ths inch.

0.71 x 16 = 11.36

11.36 = the number of 16th's of an inch. This is the numerator of the fraction. Apply the rules for rounding.

11.36 rounds to 11 because 0.36 is less than 0.5

Therefore, 0.71 in. = (approximately) 11/16ths of an inch

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  • 2 weeks later...

so my problem is my max width from wheel to wheel is 34'' so not quite big enough for 2 18s but i was thinking maybe a box like this would be ok... i would need help figuring out all the dimensions necessary tune have the right tuning and cube... this is my first google sketch up so its not that great

Screenshot2011-03-20at25229PM.png

my max dimensions

34 wheel to wheel

38 back seat to trim

17 back seat height

12 right width wheel

9 left with wheel

8 right height wheel

7 left height wheel

52 widest part of truck

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So do to size restrictions I had to go back down to 15s and I got a box designer to help me out. This is what he came up with tell me what y'all think

Enclosure:

34 x 32 - 3        Top/Bottom

34 x 16.25 - 1     Back

32.5 x 11.75 - 1   Front

31.25 x 16.25 - 2  Sides

Port:

32.5 x 27 7/8 - 2 

Port Brace:

22 7/8 x 3 - 1 

Box Brace:

11.75 x 30.5 - 1

Angle:

32.5 x 2 7/ 8 - 1

-------------------------------------------------------------------------

7cubes @ 34hz   95.25sq in of port 

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220a6a8e.jpg

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you win some, you lose some

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