View Full Version : confused on box

R0ID_RAGE

06-19-2007, 07:46 PM

alright, so i have 2 subs...i want to build myself a sealed box

it says the smallest box should be 1ft(cubed) for each sub and largest should be 4.6ft(cubed)

now, how do i turn that into dimensions?

--32in(length) x 16in(height) x 16in(width)...the volume is 8192

so then, i divide 8192 by 12 to make it feet...and i get 683 feet

then take the cubed root of 683...which is 8.8 feet...so the volume of my box with those dimensions would be 8.8 cubic feet?

if i did that right, the box i have in there now is 8.4 cubic feet.

should i build another box, and make it the maximum cubic feet(9.2ft cubed)? or is the box i have now good enough for dimensions

trying to get max SQL on kicker compvr 12" fyi^^

i would also like to know whether putting the holes at an angle so the subs face both up and out would have much effect on the sound...i think it looks better that way, but dont want to sacrafice sound doing so--

BassAce

06-19-2007, 07:59 PM

I think that box plan should work. You should be good on the holes and the cubic feet.

patrick1202

06-19-2007, 08:01 PM

thats only 3.71 cubes of airspace for both before speaker displacement

patrick1202

06-19-2007, 08:01 PM

http://www.rockfordfosgate.com/rftech/box_wizard.asp

rockford fosgates box calc

R0ID_RAGE

06-19-2007, 08:01 PM

thats only 3.71 cubes of airspace for both before speaker displacement

how'd you figure that out? is that a bad thing?

patrick1202

06-19-2007, 08:05 PM

nah each sub is getting 1.855 cubed airspace before displacement so you are getting right around 1 cube for each sub and thats what they need as you said so you should be good but i don't know about making the box smaller you could addinches somewhere else and take away some where else if you wanted like more height but i rieally wouldn't make it any smaller of a box

PhatTonyDeMarco

06-19-2007, 08:05 PM

how'd you figure that out? is that a bad thing?

You failed highschool math, I assume?

(Length x Width x Height)/1728 = volume in cubic feet :graduate:

patrick1202

06-19-2007, 08:06 PM

^^^^^^^ three posts up rockford fosgates box calc that's how i figured that out you just put in the dimensions and it tells you

patrick1202

06-19-2007, 08:08 PM

actually. . . lol

R0ID_RAGE

06-19-2007, 08:09 PM

You failed highschool math, I assume?

(Length x Width x Height)/1728 = volume in cubic feet :graduate:

in that formula, 16*32*16/1728=4.74....i dont get where 3.71 comes from--

patrick1202

06-19-2007, 08:09 PM

they never taught that formula when i was in algerbra but thats the last math class i took alg 1

patrick1202

06-19-2007, 08:11 PM

alright, so i have 2 subs...i want to build myself a sealed box

it says the smallest box should be 1ft(cubed) for each sub and largest should be 4.6ft(cubed)

now, how do i turn that into dimensions?

--32in(length) x 16in(height) x 16in(width)...the volume is 8192

so then, i divide 8192 by 12 to make it feet...and i get 683 feet

then take the cubed root of 683...which is 8.8 feet...so the volume of my box with those dimensions would be 8.8 cubic feet?

if i did that right, the box i have in there now is 8.4 cubic feet.

should i build another box, and make it the maximum cubic feet(9.2ft cubed)? or is the box i have now good enough for dimensions

trying to get max SQL on kicker compvr 12" fyi^^

i would also like to know whether putting the holes at an angle so the subs face both up and out would have much effect on the sound...i think it looks better that way, but dont want to sacrafice sound doing so--

the dimensions you gave me was 32x16x16 that's what i got

patrick1202

06-19-2007, 08:11 PM

so which is it 16x16x32 or16x32x32