revshot

ok guys im really handy and building stuff and i want to make a custom box for my new audio eqitment. im not very good at math so this is a problem with finding the right cubic space with the design i would like so there is where i ask for help
i have a 94 extended cab 1500, back seats will be removed to make way for a custom enclosure

i have

2- rockford punch stage 1 10"
1- rockford punch stage 3 12"

i want the 12 in the middle and this to be 1 large box heres a sketch of what i want to do

here is the volume each sub calls for displacing
12" .75ft cubic
10's .65ft cubic
i would like a sealed box as i dont care for a ported nor the fluttering noise they make

if anyone can come up with dimensions you would be a life saver! PS i want to fill as much as the extend cab as i can, even if it means making the boxes inside bigger ones...

heres a pic of my equitment and a rough sketch of what i want my box to be!

Prolifik

iTrader: (7)

u gonna put all 3 in the same box? get ready for some fluttering noise there.

revshot

the dashes lines represent hidden surface and in this case a wall dividing the 3 subs, so basically its 3 sealed boxes in 1 enclosure

hofulstrof

mixing different types of subs all playing in one box is a bad idea. use either both 10's or the single 12.

revshot

how come? if all 3 of them are enclosed in their own boxes seperated by 3/4" MDF... i was told by many people this will be fine? can you explain please?

MR2NR

iTrader: (66)

2 subs in the proper box will outperform3 in the improper box. Good output from a sub is all about the box. Are you using both amplifiers in the pic to power these 3 subs?

revshot

yes, the one amp will power the 12 and the smaller one will power the 10's

im pretty sure ive got the dimensions correct i was up all night figuring out the cubic feet per box and its almost exact to the manufactures reccomendations

theboy

Ditch the 12" and run 3 10's.They will all play the same freq. and no cancelation issues!

hofulstrof

how come? if all 3 of them are enclosed in their own boxes seperated by 3/4" MDF... i was told by many people this will be fine? can you explain please? </font>[/QUOTE]its because the t/s parameters are different for every sub. so every sub will act differently when put in a box. what will happen is on some frequencys they will cancel each other out and some they may not.

yes you could do and it might sound good.but odds are it wont sound as good as just running one 12 or the 10's

mixing sub sizes it like using different size rims on you car almost nothing good can come of it. it will work but [img]graemlins/freak.gif[/img]

[ December 28, 2005, 11:12 AM: Message edited by: hofulstrof ]

hofulstrof

and what he said ^^^