Ported Box For An 18" Fi Btl

[lambofgood91 10+ year member]

Would it be possible to put an FI BTL in a ported box with the max dimensions of 40"wide 25"deep and 16" high. I want to mount the woofer like this

http://i4.photobucket.com/albums/y131/NoPh33rRaCiNg/IMG_0056.jpg

because my box can only be a maximum of 16" high. Does anyone think it's possible?!?! And if you do can you send me a rough sketch of the box design!! Thx : )

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[Mr Cabinetry 10+ year member]

Would it be possible to put an FI BTL in a ported box with the max dimensions of 40"wide 25"deep and 16" high. I want to mount the woofer like this
http://i4.photobucket.com/albums/y131/NoPh33rRaCiNg/IMG_0056.jpg

because my box can only be a maximum of 16" high. Does anyone think it's possible?!?! And if you do can you send me a rough sketch of the box design!! Thx : )

Well, Fi states a recommended enclosure of 5 cf net and you got 7.60 cf to work with, so you can do it, all you need to tell me is port tuning, how many watts for the subwoofer, how much port area for the port and if you got them, the spec sheet with all the t/s parameters.

Fi audio has no t/s spec's for your sub on their website.

 

[Joseph M 10+ year member]

i have one for you in my sig, although it might be a little high.

Its 19'' but if you play with the RE calc u can get what u want.

 

[lambofgood91 10+ year member]

Heres the specs for the BTL 18

Fs: 00.0 Hz | 00.0 Hz

Re: 0.7 Ohms/coil | 1.5 Ohms/coil

Qms: 0.00 | 0.00

Qes: .00 | .00

Qts: .00 | .00

Mms: 000g | 000g

Cms: 0.00mm/N | 0.00mm/N

Sd: 1210cm^2 | 1210cm^2

Vas: 00.0 l | 00.0 l

Spl: 00.0dB 1W/1m | 00.0dB 1W/1m

Bl: 00.0 N/A | 00.0 N/A

Xmax: 16mm * | 16mm *

Rms: 2000W * | 2000W *

Sealed box: N/A cuft | N/A cuft

Ported box: 5-10cuft | 5-10cuft

Sub OD: 18.500” | 18.500”

Cut ID: 16.750” | 16.750”

Mounting depth: 9.750” * | 9.750” *

Displacement: 0.26cuft * | 0.26cuft *

I would like the box to be tuned to 38 hz. Do you think thats a good tuning??

Im going to be powering the woofer with approximately 2200-2500 watts rms

 

[psych0ticnemes1 5,000+ posts]

You have a PM. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Mr Cabinetry 10+ year member]

Heres the specs for the BTL 18
Fs: 00.0 Hz | 00.0 Hz

Re: 0.7 Ohms/coil | 1.5 Ohms/coil

Qms: 0.00 | 0.00

Qes: .00 | .00

Qts: .00 | .00

Mms: 000g | 000g

Cms: 0.00mm/N | 0.00mm/N

Sd: 1210cm^2 | 1210cm^2

Vas: 00.0 l | 00.0 l

Spl: 00.0dB 1W/1m | 00.0dB 1W/1m

Bl: 00.0 N/A | 00.0 N/A

Xmax: 16mm * | 16mm *

Rms: 2000W * | 2000W *

Sealed box: N/A cuft | N/A cuft

Ported box: 5-10cuft | 5-10cuft

Sub OD: 18.500” | 18.500”

Cut ID: 16.750” | 16.750”

Mounting depth: 9.750” * | 9.750” *

Displacement: 0.26cuft * | 0.26cuft *

I would like the box to be tuned to 38 hz. Do you think thats a good tuning??

Im going to be powering the woofer with approximately 2200-2500 watts rms

LOL, OK, am i supposed to fill in all the blanks for the t/s parameters.

Besides, psych0ticnemes1 probably has it all covered for ya.

 

[lambofgood91 10+ year member]

haha idk?? Thats how it was on FI's website....................

 

[hrtbrk1 5,000+ posts]

yeah they dnt give it...lol

 

[JG903 10+ year member]

Fs: 32.1 Hz

Re: 1.5 Ohms/coil

Qms: 6.2

Qes: .52

Qts: .48

Mms: 307 g

Cms:.08 mm/N

Sd: 1210 cm^2

Vas: 164.2 l

Spl: 92.1 dB 1W/1m

Bl: 13.45

Try this. I think it looks right.