15" fi btl enclosure help

[chad1981 0]

I just bought a 15" fi btl dual 2 ohm off of craigslist. The box that came with it is obviously way too small and tuned to high. I was wondering if anyone could help me figure out what size of box and all that stuff I need to get what I want out of it.

The current box is 19"x18x17" that's about 3 cubes and inside that enclosure is half port and the speaker. Way too small. It lacks lower end very much.

Im running it off of a autotek ss1500 at 1 ohm.

I want it to be audibly loud and hit as hard as possible. I have built many boxes but just want to really make sure this one comes out really well. Any suggestions would be appreciated. Thanks.

[Luke.H 33]

The Fi cutsheets here on this forum might be someplace to start BTL Cutsheets thats 4.0 ft^3 @ 32hz. Might be what your looking for.

[chad1981 0]

Sweet didn't know they were there!

[Luke.H 33]

SSA has some dimensions as well. Under the tech tab at the top. Theyre all tuned to 30hz if I remember right. You dont necessarily have to tune to 33hz like the cut sheets say its really your preference

[chad1981 0]

What would be best?

[Luke.H 33]

Depends on your musical preference. What do you listen to

[chad1981 0]

Rap and rock.

[chad1981 0]

If I 45 all the corners will it throw the tuning off by alot? Should I add another inch to the depth to compensate or something?

[Luke.H 33]

For rap you should be fine at 32. I personally tuned to 35 but its all preference. Theres lots of info on that here just search around