FI BL 12's

[J2phat4u 9]

I just recently bought 2 FI BL 12's fully loaded with 4 inch voice coils. I have 2 questions for the forum if you guys can please help with me. First i am running a Rockford Fosgate 2500-1bdcp on the and since the subs are dual 1 ohm is this enough power for them? Second, the enclosure i had built for them is 4.23 cubic feet after everything and tuned to 33 hz. Will they sound good in this enclosure or should i have made it bigger? The amp puts out 3,526 watts total. Thanks in advance.

[trod2902 26]

Do you mean net when you say "after everything", or is that before you subtract port and wood thickness?

[J2phat4u 9]

Do you mean net when you say "after everything", or is that before you subtract port and wood thickness?

Yes after wood, bracing and everything my net is 4.23 cubic feet.

[J2phat4u 9]

Yes after everything including bracing my net is 4.23.

[trod2902 26]

Should sound great man, put some pics of the enclosure

[Freshh 11]

Box should be good!

[J2phat4u 9]

I hope so. It seems that these subs need alot of power.

[trod2902 26]

I hope so. It seems that these subs need alot of power.

why do you say that?

Edited October 25, 2011 by trod2902

[kirill007 52]

Yes after everything including bracing my net is 4.23.

how much port area?

[J2phat4u 9]

I have no idea about the port area because someone built it for me. It has 2 inch baffle, 1 inch bracing inside and 1 inch all around the outside. The reason i think they need alot of power is because i had a set of 12W7's running on this amp and at half volume you couldnt sit in my SUV. With the FI's in i actually had to adjust the gain up to get the same output.

[MikeMartel 64]

1" all around and a 2" baffle is thick! Thats gonna be nice and strong for sure,

[///M5 2,833]

I have no idea about the port area because someone built it for me. It has 2 inch baffle, 1 inch bracing inside and 1 inch all around the outside. The reason i think they need alot of power is because i had a set of 12W7's running on this amp and at half volume you couldnt sit in my SUV. With the FI's in i actually had to adjust the gain up to get the same output.

Not everything else is the same...

[J2phat4u 9]

I agree!! I think i was more worried about the enclosure being correct air space than anything.

[Dictator 39]

Bl's are the shit banging on mine for over a year now taking 3500rms like a champ with the 3inch vc

[J2phat4u 9]

Well i hope mine come alive in the new enclosure i had built for them.

[J2phat4u 9]

The new enclosure arrived!!! Oh my God these things are so loud and hit so hard. The wait was worth it.