BTL parameter help

[rawlins87]

Here is the parameters of the btl 18 that FI has on their website. Can anyone tell me what the options were on this sub that was tested for parameters (cooling? high xmax coil ect?). Thinking about buying two and doing a T-Line. Whatever options are on this sub is perfect for the application I want to use it in.

BTL18

DUAL 1 | DUAL 2

Fs: 31.9 Hz | 31.1 Hz

Re: 0.7 Ohms/coil | 1.4 Ohms/coil

Qms: 6.26 | 6.42

Qes: .26 | .24

Qts: .24 | .023

Mms: 313g | 329g

Sd: 1210cm^2 | 1210cm^2

Vas: 163.1 l | 163.1 l

Spl: 94.9dB 1W/1m | 94.9dB 1W/1m

Bl: 18.3 N/A | 27.2 N/A

Xmax: 28mm * | 28mm *

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: 10.250” | 10.250”

Displacement: 0.26cuft | 0.26cuft

[Guest]

2 18's in a t-line? good luck fitting that in a car...unless its for the home.

[rawlins87]

its an suv and i have PLENTY of room. i plan on doing 2 off a sundown 4500 (when it comes out) for the time being until i have enough money to buy 2 more subs and another 4500>>>then a wall will be built

Edited September 28, 2009 by rawlins87

[cnate777]

Unless you have a box truck I dont think they will fit......what SUV do you have.........1 18 you can do but I am thinking 2 will be a stretch.....might be wrong though

[rawlins87]

I can fit one tuned to 31 hz. or 2 tuned around 40 hz

I not here to bicker with people whether it will fit or not, i just need to know sub build specs regarding parameters. Thanks

Edited September 30, 2009 by rawlins87

[justin smith]

a t-line is not just a big ported box

[Guest]

you cant tune a t-line to w/e freq you want. it has to be the Fs of the sub.

you will NOT fit 2 18's in a t-line in your truck. im 95% sure about it. and you cant really throw that much power to a woofer. 4000rms is alot for a woofer, especially in a t-line

[AI James]

hes putting the 4500rms on 2 woofers so they would be seeing about 2250 each

[FiBTLforlife]

hes putting the 4500rms on 2 woofers so they would be seeing about 2250 each

im not gone say it cant or it can. i just want to see it done with a video and ill be happy. good luck with your build and keep us posted on the progress.

[rawlins87]

a t-line is not just a big ported box

I understand this (i assumed that you could make the line anything ABOVE Fs. I was wrong)

you cant tune a t-line to w/e freq you want. it has to be the Fs of the sub.

you will NOT fit 2 18's in a t-line in your truck. im 95% sure about it. and you cant really throw that much power to a woofer. 4000rms is alot for a woofer, especially in a t-line

Ok again i was wrong about the Fs. And now remeasuring everything it will have to be 2 15s. I need help know what the parameters will be given certain "options". If you cant help with this your are you cluttering my thread? And it was 1 4500 for 2 subs not 1 Kthxbye

im not gone say it cant or it can. i just want to see it done with a video and ill be happy. good luck with your build and keep us posted on the progress.

Thanks for the help, and now knowing that I cant tune above Fs I only have room for 2 15s. But again this is temp, just before i build my wall