my first box build/s

[dkguitarist 5,000+ posts]

it is right around .15. i was told that 1.75 would be plenty of space sealed per driver. i think 1.8 max is what adire recommends. but i don't think i can achieve that.

 

[amr952 10+ year member]

31 * 15 * 14 = 6510 / 1728 = 3.77

3.77 - .3 = 3.47 / 2 = 1.73

1.73 - .09 - .04 = 1.61

Looks like that will work out pretty good right within Adires specs.

 

[dkguitarist 5,000+ posts]

any way to make it a bit bigger? maybe .1 cube bigger?

 

[amr952 10+ year member]

Well to make it bigger we would have to increase one of the dimensions. So far the outside dimensions are going to be at your max 32.5 * 16.5 * 15.5.

31 * 15 * 14 + 1.5 to all sides

32.5 * 16.5 * 15.5

Which dimension could you give a little more on?

 

[dkguitarist 5,000+ posts]

i can use the 32.5 x 16.5 x 15.5 perfectly. i have a current prefab box (blew my L7's in) and the specs were taken from it. maybe take 1/4". as i couldn't see too well. but i had maybe 1/4" to spare depthwise.

 

[amr952 10+ year member]

Well seeing as how the box is 1.6 cuft with your max dimensions you are going to have to go out and measure your car to see if we can squeeze some more out of it.

 

[ramos 5,000+ posts]

ok, so the plan for the 12" rl-ps sealed will be 31.5 x 16.5 x 15.5 externally. 1 inch shorter than my max dimensions i posted. this is all including the divider/bracing/displacement. it comes out to 1.52^3 each. maybe use some polyfill to take off that .02^3
give me a few to work on the box for the 12" brahmas.

ixnay on the polyfill my brother. Polyfill makes the enclosure seem larger. It's gonna be sealed I wouldn't worry about .02 cuft. You won't notice it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[dkguitarist 5,000+ posts]

ixnay on the polyfill my brother. Polyfill makes the enclosure seem larger. It's gonna be sealed I wouldn't worry about .02 cuft. You won't notice it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

yeah. after amr92 gave me his dimensions, i wasn't worried about it. i'll go either way with it then.

as for the measurements i'll be right back with the true dimensions.

 

[amr952 10+ year member]

Well, I am taking my fiance to lunch so if ramos cant help you on your final dimensions for the Brama I will as soon as I get back. If you need any more help just post in here or pm me I will be glad to help. Have fun.

Remeber Measure 4 times cut once. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[dkguitarist 5,000+ posts]

thank you for all your help. you are truly appreciated. and you are too ramos.

 

[dkguitarist 5,000+ posts]

so the measurements are all 1/4"

 

[dkguitarist 5,000+ posts]

so i redid all my calculations.

for the RL-P's:

30.75*14.75*13.75=6236.48/1728=3.60-.36(displacement of both drivers)=3.24/2=1.62-.13(divider and bracing values combined)=1.49^3

for the Brahma's:

30.75*15.25*14.25=6791.01/1728=3.92-.3(displacement of both drivers)=3.62/2=1.81-.13(divider and bracing values combined)=1.68

am i correct? does anyone see any problems/have any suggestions?

 

[ramos 5,000+ posts]

Looks right //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[dkguitarist 5,000+ posts]

thank you ramos. and amr92. you guys are wonderful. i learn something new everday. hehe. i'm ecstatic now. the rl-ps should be coming the end of the week, and the brahmas in 2 weeks or so. thanks again!

 

[ramos 5,000+ posts]

Yeah man, have you checked out http://www.bcae1.com/ lots of good stuff there //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif