box size for 8 12's??

[rickymac21 10+ year member]

im planning on doing a wall of 8 hifonics hfi series as a daily ground pounder and occasionaly bassracer... how much air space should i give them? i read somwhere they need around 2.5 cubes per sub. so that would be 20 cubes after displacement.. kinda big. haha.. any ideas? i know i asked this b4 but what if i just got about 12 of the hfis and built a sealed wall??? would that be just as good and save a little cubic feet??

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[galacticmonkey 5,000+ posts]

Go for around 15 cubes. Tune them a little high at around 38hz. They are awesome some for the money.

 

[rickymac21 10+ year member]

Go for around 15 cubes. Tune them a little high at around 38hz. They are awesome some for the money.

yea thats what i have been told... im not looking to be rediculously loud.. just around 145-148 on music is cool with me.... i really want it to be a groundpounder though.... do you have any idea if these play well on the lows or if they do well tuned low?

 

[99grandprixGT 5,000+ posts]

what car you putting them in?

 

[rickymac21 10+ year member]

its a 93 subaru impreza wagon... basically like a slightly extended honda civic hatchback.

 

[galacticmonkey 5,000+ posts]

Well we did a box with 2 of them tuned in the low 40s and it sounded pretty good for what it was.

Id tune a little lower, in the upper 30s and you will have a loud, good sounding box.

 

[rickymac21 10+ year member]

Well we did a box with 2 of them tuned in the low 40s and it sounded pretty good for what it was.
Id tune a little lower, in the upper 30s and you will have a loud, good sounding box.

sounds good to me... 36-38 hertz then? and i take it you think 8 ported would be better than 10 or 12 sealed? oh, another important question. lol. i dont plan on getting a new amp. so with my 1 autotek mm4000, how would i wire these subs?

 

[illbmeubu 10+ year member]

i say tune to about 36 and do the 8 ported. forget the sealed route IMO.

 

[rickymac21 10+ year member]

i say tune to about 36 and do the 8 ported. forget the sealed route IMO.

cool.. thanks bud... when i get this whole thing going ill start a build log so people can see the progress and results.. hopefully it does what i want

 

[BassMechkanic 10+ year member]

how many amps, i would not share all the subs in same air if they are on seperate amps, plus building seperate boxes/chambers will make the box stronger, you could share 4 subs in 7-8 cubes, plus it is alot easier build smaller boxes then bolt them together in car then wrap out side of all boxes with another sheet of wood, doubling the wall thickness

 

[18inchjeepin 10+ year member]

its been proven a common chamber is louder

do some measurements of your car, and build as big as possible, you can always shrink it down later.

i'd tune low, a big box and low tuning gets freakin low

 

[rickymac21 10+ year member]

cool. ^^^ yea thats what i have been told and from the one low tuned box i built it worked out good tuning low and building it big... but i just wasnt sure if these 12's would do good tuned low..... so 1 chamber, as big as possible? itll be hard to determine the actual internal cubic ft cuz of the angles ill have to make to get the max room for the box.