help me with a box design please

[Harleyfx69 10+ year member]

Hi there,

Have 2 rockford fosgates punch stage 2's,

Website says they need .5 to .85 cubic feet sealed per sub ..

Thats around 1 to 1.9 cubic feet per sub,

I think i am doing my conversions wrong because when i do it the box is just too dam small,

What do the approximat dimensions need to be for a 3/4 inch MDF board rectangular box ..

Also taking into consideration the approximate displacment of the sub ..

Thanks,

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[galacticmonkey 5,000+ posts]

I can so you a design thats ported/sealed/bandpass with a full cutsheet for a little money. Just send me a PM. Ive done quite a few.

 

[PhatTonyDeMarco 5,000+ posts]

Don't pay for that shit...

You need to start with the dimensions you have to work with in your vehicle and make a box relative to those parameters.

Length x Width x Height / 1728 (a cubic foot in inches), will give you your volume for your box. You need to add 1.5 to each dimension for 3/4 inch MDF in order to determine actual box size, or subtract it from each prior to doing your math if you have factored material thickness in your dimensions already.

 

[Harleyfx69 10+ year member]

Don't pay for that shit...
You need to start with the dimensions you have to work with in your vehicle and make a box relative to those parameters.

Length x Width x Height / 1728 (a cubic foot in inches), will give you your volume for your box. You need to add 1.5 to each dimension for 3/4 inch MDF in order to determine actual box size, or subtract it from each prior to doing your math if you have factored material thickness in your dimensions already.

K thanks man,

Right now im working with the backseat of a dodge ram ,

I have a sheet of 3/4 MDF sitting in my dorm room,

so size of box isnt really an issue,

just something that will look decent with 2 ten's in it,

The mounting depth of the sub is somewhere around 6 inches, so i think i need at least around 8 inches deep to cover wires and what not,

But other than that size is in the air

 

[cshaw 10+ year member]

12 by 12 by 12 internal dimensions is 1 cube fyi.

 

[Harleyfx69 10+ year member]

Thanks,

And one other question would the p2's be *better* in a smaller, or the larger dimensions of the box ?

1 cubic foot, or 1.9

 

[Harleyfx69 10+ year member]

okay another question,

Considering im trying to fit two tens into the box,

If i build it large enough to cover both ten's ,

The box length is minimum going to be around 20 inches, and thats just covering subs, not mounting space or anything,

After i build this to fit,

To get the box to the necesary volume,

Would i need to put something in it to take away displacement to get it down to the 1.5 cubic feet ?

 

[iDesignBoxes 10+ year member]

Let me know your maximum dimensions, shoot me a PM and I'll help you out.