4th order bandpass an fi q 12?

[tizzle2008]

i 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]

anyone have any imput for me??

[mjf]

tuned too high. bring it down to about 30ish.

[tizzle2008]

well bandpass tuning isnt the same as normal ported..... rolloff is at 25-bout 150ish

[galacticmonkey]

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]

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]

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]

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