12w6v2 need help finding port length

[JLmatrix 10+ year member]

sorry this is in paint, and not a better cad program...but i have to work with what i've got.

anyway, i'm building this box for 2 12w6v2's, i'm building it to match the angle of the rear seats, so i can optimize space in my trunk area. the subs will be on the flat area of the box, firing rearward, and the port will also be firing rearward. my problems is determing the port size with the rear angle of the box. i dont know if the port length will need to wrap around the back wall, but if it does, it would obviously need to run parallel with the back wall.

thats where i'm having problems. this isn't the final size of the box, just the maximum area i have to work with. the heigth can be dropped, or the depth can be dropped, but i would like for the width of 38" to remain pretty close to that.

i'm looking for 4ft^3 tuned in the low 30's...if anyone can offer suggestions, they would be much appreciated!

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[tank65 10+ year member]

http://www.carstereo.com/help2/Articles.cfm?id=31

that should do it

 

[JLmatrix 10+ year member]

thanks man, that'll give me something to play with for awhile //content.invisioncic.com/y282845/emoticons/2thumbs.gif.fdc3ba010dbb42b61704534b46d02fe4.gif

 

[JLmatrix 10+ year member]

well, i've been playing around with gross and net volumes today...and here is what i came up with:

3.6 cubes @ 33 hz....

that was the best compromise i could find between volume and frequency

layed out the cuts on the MDF today, and hopefully tomorrow after work i'll have some time to start cutting.

hopefully it'll sound pretty good with 1.8 cubes per sub