box build, few last minute questions...

[littledude 10+ year member]

i think im just going to use the 12 cubes at 35hz, not the wall, dont feel like going thru the trouble of making it, it should still sound good....now should i put the subs up, port back, or put both back???

 

[BJ The Man 10+ year member]

12 cubes for 2 15s is massive

i would go 8 cubes at 35hz with a rather big port. sus and port right behind the front seats. then you would have cargo area in the back for batts amps etc.. or just for stufff. you could fire the port right above the center console.

it would be sexy.

and loud

veryyy loud

 

[littledude 10+ year member]

well i still want to be able to see out my rear window and a box thats 22"high by 37"wide and 33"deep is good im gonna go with what kicker recommends max ported which is 6cubes each so a 12 cube box. 123sq.in. port 35hz this would still be loud right??

 

[BJ The Man 10+ year member]

yeah but from expirience large ported boxes sound way shitty and your sub will lack in loudness aroud 48+hz most likely.

look at my box. 4.5 cubes at 32 for one 15. and it not only sounds shitty but the sub is almost mechanically maxed out at 750watts rms and im not happy with the intensity around 50+hz.

in all seriousness 8 cubes at 35 is good. i know kicker recommends large boxes but you wont be happy with that.

heres an idea that will work for you:

45w x 22h x 22.25deep. 6.5 inch port opening without the second piece so its like this "||".

that gives you about 8.5cubes at 35-36hz with 133.25 inches of port area.

put the port in the middle of the box and have the subs up or facing the seats. make sure the box is close to the front seats and then you will be able to see out the back. you will still have cargo room for amps batts and other stuff. plus to top it all off it will get fvcking loud.

 

[littledude 10+ year member]

ya that sound good 45 wide is just skinny enough to fit..lol, if up put the subs up should i put the port towards the rear or the front seats... and i dont know alot about those ports so how deep should it be to tune it at 35-36hz

 

[BJ The Man 10+ year member]

the port is 6.5 inches wide which means the port walls should be 6.5 inches from the back wall of the box. if you want that box plan ill show you it with a cut sheet as long as all the dimmentions are ok.

 

[littledude 10+ year member]

ya the dimensions look good

 

[BJ The Man 10+ year member]

ok ill get you the plans in a sec..its just RE enclosure calc.

 

[BJ The Man 10+ year member]

cut sheet for the centered port would be like this:

bottom and top=45 x 22.5

left and right plate=21 x 20.5

back=20.5 x 45

front plates=19.25 x 20.5 x2

port walls=14.5 x 20.5 x2

im making a paint pic of it just a sec

 

[BJ The Man 10+ year member]

just a mock up of it so you know about what the outcome will be.

 

[littledude 10+ year member]

the only thing i don't get about that calc. is it says square port length 1 is 15 then the second one is zero , but then it says total port length is 25.5 whats that mean

ya ill try that design out, but with the subs pointing up.

and then when i use winISD pro is says port length should be 25.5

i don't understand why they are different??

 

[BJ The Man 10+ year member]

port length 1 is the opening and 2 is the second piece that you fine tune it with. make sure you tune a little lower and make it a little bigger to account to sub displacement.