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View Full Version : ideal box for type x alpine



jmkanek
04-01-2009, 11:10 AM
im thinking of building a bigger box now that i have the extra room, my previous box is in my sig, all you box builders what is the ideal size box for two alpine type x 12,s ill be pushing them with two pa-a3000db amps, looking for a lower tuning but want to try to go towards spl, without sacraficing the sq of the type x's

99grandprixGT
04-01-2009, 11:47 AM
id try something around 4 cubes after sub and port displacement tuned to 32 hz.

jco1385
04-01-2009, 11:48 AM
~2 cubes each around 28-30hz

jmkanek
04-01-2009, 12:02 PM
how much port area should i go for , im looking for something thas gonna be loud, and hit extrememly hard

jco1385
04-01-2009, 12:12 PM
i need to design my new box for 2 x's also. but idk the math behind it :crap:

jmkanek
04-01-2009, 12:18 PM
heres a calculator, but i dont know how much port area these subs, need and stuff http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

jmkanek
04-01-2009, 02:47 PM
is 94.5 too much port area for a type x??

mrose
04-01-2009, 02:49 PM
I have 4 10 type X and I am using 4" tall 21" Wide and for 24"

mrose
04-01-2009, 02:50 PM
for the ports

bonesninja
04-01-2009, 02:59 PM
is 94.5 too much port area for a type x??

ummmm yes


and the type x is not gonna like that kind of power. Find a different sub if you want to use that much power

jmkanek
04-01-2009, 03:04 PM
so what would the optimal size and port volume and tuning for these subs be

jco1385
04-01-2009, 03:20 PM
ummmm yes


and the type x is not gonna like that kind of power. Find a different sub if you want to use that much power

not familiar w/ said amp... but looking at the model # is that a 3krms?

i give mine half that and thats really pushing it. 6k on 2 will not last longer than like 2min

jmkanek
04-01-2009, 03:22 PM
naa there only pushing like 1800rms rated so proly not getting but about 1400 or 1500 rms to each sub, not pushing them tooooooo hard, lol

jco1385
04-01-2009, 03:23 PM
i know if i didn't have mine facing inside where i can hear it when it bottoms out my 1.5k probably would have killed it already.

jmkanek
04-01-2009, 03:26 PM
yea ive dont alot of adjusting on the gain and listening, but i had them in my lil car in a small, box so now im trying to figure out the optimal sized box for em, so i can get the max outta these subs, yea im careful with the gains tho

jerseyboy
04-01-2009, 05:18 PM
I was wondering the same. I have 2 type x on 2 pdx 1000.1 amps each and was wondering on a different box. The box is an alpine spec box but was built for 2 alpine type s. I then bought the type x and put them in the same box. I dont know if they need a bigger box or a bigger port or anything. sorry for thread jacking..lol

jco1385
04-01-2009, 05:21 PM
my box (in sig) is very nice. decently loud (this IS an SQ sub, not SPL), but super clean.

nineball
04-01-2009, 05:56 PM
http://www.caraudio.com/forum/showthread.php?t=390574


i would use that as a base to start from. i love the sounds i can produce.

jco1385
04-01-2009, 05:58 PM
http://www.caraudio.com/forum/showthread.php?t=390574


i would use that as a base to start from. i love the sounds i can produce.

how low can you get before unloading? or you have a SSF? mine's not in so i have to keep an eye on it. never thought of going bigger than 2 cubes net though.

nineball
04-01-2009, 06:58 PM
amp has ssf (pdx 1.1000)

haven't had it measured yet, but i may this weekend if i can find a few hours.