PDA

View Full Version : Ported Box For An 18" Fi Btl



lambofgood91
06-25-2008, 11:14 AM
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 : )

Mr Cabinetry
06-25-2008, 12:44 PM
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
06-25-2008, 12:48 PM
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
06-25-2008, 02:32 PM
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
06-25-2008, 02:40 PM
You have a PM. :)

Mr Cabinetry
06-25-2008, 02:53 PM
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
06-25-2008, 02:59 PM
haha idk?? Thats how it was on FI's website....................

hrtbrk1
06-25-2008, 03:03 PM
yeah they dnt give it...lol

JG903
06-25-2008, 03:16 PM
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.