4th order bandpass an fi q 12?

[tizzle2008 10+ year member]

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?

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[tizzle2008 10+ year member]

anyone have any imput for me??

 

[mjf 10+ year member]

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

 

[tizzle2008 10+ year member]

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

 

[galacticmonkey 5,000+ posts]

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 10+ year member]

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 5,000+ posts]

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 5,000+ posts]

thats 2 bigslap it in 1.25 cubes sealed playing into 2 cubes ported

with a 50square inch port 12 inches long

80

Hmmm... that sounds familiar //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif