pilyo

looks like an artillery weapon. flat heat cannon, hollow point bullet and armor piercing heads. hehe

I now have my 2nd 18inch fully loaded btl, This time am planing to build it for my large home theater room setup powered by a home DIY amp that can produce 2.5kwrms. in our country we use 220vac. http://i165.photobucket.com/albums/u72/pilyo168/schematics/5000W_power_amplifier.jpg -------------------------------------------------------------- As for car design. From Fi tech recommends: Fi 
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. -------------------------------------------------------------------------------------------------- Could someone help me design an enclosure for HT use. w/ port tuning at 32hz btl's best lowest FS feature. i know Fi Q is lower but i want btl to do job done. This is just an example enclosure style i want... seems easier to build. and no out of phase cancellation on the ports and sub issues. again an example. cut list for 3/4 mdf 2 - 25x35 top & bottom 2 - 27x25 sides 2 - 25x25 front & back 1 - 25x25 port 6pcs - 4x4 gusset I provided a blank pattern list below to build the box using 3/4 mdf wood. i know the above sample is way too big and tuning above my preference of 32hz. please help me correct necessary inputs below. 2 - x top & bottom 2 - x sides 2 - x front & back 1 - x port[/color 6 - gusset i also want to add a simple 3 x 3/4 mdf cross bracing inside like this for extra box stiffness. if you have better design than this pls share. Thanks.

The BTL is most definitely not in there. Not on Fi's site either which is exactly why I said what I did. Understandably though because if noobs had them it would create more confusion than it would solve. The parameters are on the site... 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 Standard 3-7 business day build time. Product code: 00218 Price: $ 414.00 What's the * specs when loaded? DUAL 1 | DUAL 2 Xmax: 28mm * | 28mm * Rms: 2000W * | 2000W * Sir Nick could i use the re cad enclosure calculator building the 15cu @ 16hz? would there be a difference front port vs down firing power port? please help.

How come in the roe 12inch challenge tests fi btl leads in hitting the lowest notes. It seems the 25hz is way louder than the popular HT svs ultras specs. Am sure 18inch btl will give way way bigger scores than this. Ive audition two svs pb13 ultra placed in front and back and it sucks in my spl meter. tested a tone 10 to 25hz is just plain crap i sense small amount of rumble compared to my 18" btl suv install. the svs effect is no sound but air only. my fart could be louder than this. hehe the svs ultra 30hz is not good either... weak imo this will be easily beaten by single 15inch RF rfr3115 sub placed on 4cu port tuned to 30hz. Stupid question, Do you think svs ultra13 could match this scores? what if you throw 4 of these in an astro van? i know audio spectrum will not be as flat. i just want spl on my ht. i want to hear loud canon blast, i want my lazyboy chair vibrate as the sub excursion does. lol thanks sir nick could you share your 15cu 15hz cut outs? am now surely will continue this project with confidence. .

Just bought a second hand 18inch single slug motor btl. I would like to know if you can Visual Check the Specification on BTL series. This is question is for newbie like me. all i can say there is an allen bolt found in the bottom of the motor. also flashlight thru the peek holes seems i only viewed the top vc former and a round thingy blocking the view of vc windings. I know the featured tech is described. but am asking for the VISUAL appearances of every each features with and w/o. Much appreciated if its drawn on jpg or actual pics. Sub guts style. Please answer the following Questions. P Chamfer: - 
Cooling: - 
Flatwind: - 
HiXmCoil: - 
Inner Heat Sink: - 
Daily or SPL: - 

Universal: - Also on the BL features found on BL and Q series. -

He did say its loaded except for the 
Inner Heat Sink option. No doubt from the seller, just wanted to know the difference with and w/o these options in visual appearances. I hope someone will take pictures of the innards of every parts. Am just being curious what it looks like. Well so far so good the sub is working fine with my earthquake ph5000. Thanks for all the answers.

in that case buyers can be scammed for getting a non fully loaded subs. Nick and Scott should fix this by putting at least a serial code or sticker to indicate its modifications.

TOP!

am excited for this 22inch beast. my question what would be the price range in the btl series? will it be double or triple stack 11 1/4inch magnet?