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View Full Version : 4th order bandpass an fi q 12?



tizzle2008
03-05-2008, 04:26 PM
http://a97.ac-images.myspacecdn.com/images01/49/l_04bca128e6a149f56602f0163936d7a8.jpgi just put my fi q 12 in a 4th order its measure exactly 2.5 sealed and the ported chamber is 4.32 tuned at roughly 55.86 hz you think this will be to big or perhaps tuned to high?

tizzle2008
03-05-2008, 04:46 PM
anyone have any imput for me??

mjf
03-05-2008, 04:56 PM
tuned too high. bring it down to about 30ish.

tizzle2008
03-05-2008, 04:57 PM
well bandpass tuning isnt the same as normal ported..... rolloff is at 25-bout 150ish

galacticmonkey
03-05-2008, 08:41 PM
Ive heard a bunch of 12s in a bandpass that has these specs:

1 cube sealed
1.25 ported
25 sq in of port
port = 16.75" long

It sounds good and gets pretty **** low. Drops real low. Worked great for every sub/car combo ive heard it in.

mobeious
03-05-2008, 08:59 PM
thats way to big for that sub... it would be hard to do a bandpass without the sub specs but ur prolly lookin at 1.25 sealed and 1.75 or so ported at around 62hz

80INCHES
03-06-2008, 12:19 PM
thats 2 big
slap it in 1.25 cubes sealed playing into 2 cubes ported
with a 50square inch port 12 inches long

80

bjfish11
03-06-2008, 01:20 PM
thats 2 big
slap it in 1.25 cubes sealed playing into 2 cubes ported
with a 50square inch port 12 inches long

80

Hmmm... that sounds familiar ;)