Hey guys I have a Fi BL 15" fully loaded woofer on the way. I will be building my box very soon here. I'm going to be running a Sundown 1500 D amp to it. I will listen mostly to low HZ rap or bass songs. I am looking for 32 HZ.

Few questions:

- Can someone give me some measurements for a ported box that is meant specifically for a BL 15" with 1500 RMS going to it?

- I have read that this sub woofer recommends a 3-5 cu ft box. Does leaning towards 5 cu ft box have any benefits in SPL?

-Any internal box bracing necessary with 3/4 " MDF wood?

- Any cotton material necessary inside the box?

Thank you

What are your max dimensions? Vehicle?

Larger enclosure will be more efficient, and likely louder. It also reduces the driver's power handling, but I wouldn't worry about. If you had to, you can always turn the gain down a tad (although I don't think it will be an issue).

Cotton material gives the effect of more volume. Offhand I don't remember if it works the same in ported enclosures as sealed, but if you can already fit a 5 ft^3 then I wouldn't mess with it.

You'll want to double up on the mounting baffle.

As far as bracing, sort of depends on how large some of the panels end up being, but you can easily throw in some dowel rods.