fi btl fully loaded what size box. Gonna feed it 3kw. Please help????

[delricoanderson 0]

What size box do yall recommend

[trod2902 26]

check the website it gives you tuning and size recommendations

[[email protected] 6]

depends on what size btl, thats what should have been states in post, but yes the site will tell you whats good for the specific sub you want

[b00sted 1]

5-8 cubic feet tuned to 32hz

[[email protected] 6]

how can you recommend a box size without knowing what size sub he's getting, doesnt make sense?

[reelfish92 54]

There is a reason that Fi Audio puts these specs on their website.

Enclosures:


BTL 12 – Ported box we recommend using 1.75-2.5 cubic feet @ 30-35Hz (I personally think that a 32hz tuning is optimal, and has the most output and is still the most musical daily driving). Use 12-16 square inches of vent area per cubic foot of volume.


BTL 15 – Ported box we recommend using 3-5 cubic feet @ 30-35Hz. Again use 12-16 square inches of vent area per cubic foot of volume.


BTL 18 – Ported box we recommend using 5-8 cubic feet @ 30-35Hz tuning, you can tune a little higher if you wish but we recommend keeping it close to 32hz for a daily driver. Again the same 12-16 square inches of area applies per cubic foot of volume.

I have a BTL N2 18" with a 8^3 foot box, 7.5^3 after port/sub/bracing displacement. It is tuned to 32hz.