Fi Technical

Fully loaded BTL 15" w/ single saz1500d sounds like a whole bunch of sealed 10's. Except it goes lower and gets louder. The Police's greatest hits sounds great. I'm having some front stage issues, so I've been focusing on the bass... This BTL has great SQ! Better than my friends believed it would sound. Better than I expected too. I can't wait to add the other 1500d and 'glass the enclosure and also run a 100.4 on some CDT's.

Would I be able to get a machined compression plug for my RE XXX v3 motor on my next recone to help with cooling? Will it negatively affect performance?

Here is the Max Dimensions im working with Height 1 18.5" Height 2 23" Depth 17.5" Width 38.5" 2 15" Q's I figured out if I got with 65 square inch of port (which is only 10.8 per cube) I would have 5.6 cubes internal volume @ 32hz will this be alot louder than 5.2 cubes sealed? I could go with external ports and make it something like 5.8 cubes maybe, Box will be gettin done next week and I'm freaking out cause I want it to be loud Do you think sealed these two 15's will still be alot louder than my old 2 12's Kicker CVX's in a 3 cube ported to about 34hz? I'm gettin a headache just thinking about it

I was wondering if you could possibly give me plans for a ported box for 1 fully loaded BTL 12" dual 1ohm sub. Powered by an Earthquake PHD10000d 3000 watt amp. My trunk dimensions are 36"L x 36"W x 17"H. here is the plans I got off a website. How does this look?

I am truly worried about this since I am eager to get a X10 or X12 and it has to deal with power issues. I have an Arc Audio XXD 2080 and it des 240 x 1 @ 4 ohms when bridged. I truly have been wanting to get a Fi Audio sub since three years ago but would like to know would the amp and the X10 or X12 would work together hand in hand or would it be a total flop?

Trying to figure out how to get the 3rd magnet option on the BTL.... I want to say I remember seeing it on their website as an option in the past --- has it become a standard? I only see the following options: Ohm configuration, p chamfer, cooling, hixm coil, daily or spl, induct heat ring, and the universal option. Thinking about getting a fully loaded BTL within the next month. Any help would be greatly appreciated. Thanks. Also, looking to get the AQ3500 amp w/yellow top up front, alt upgrade, along with big 3 upgrade. I listen to a lot of chopped and screwed music, so I think this setup would be perfect. C and S music isn't clean anyway - just good bass - so i'm not …

What is the Induct Heat Ring and what is its pros/cons?

Hello, This is my first time building a box. I would like to hear any thoughts you might have before I get to building. I just recently purchased 2x FI Q 12's dual 1's with cooling, and spider. I designed a box for a 2002 gmc envoy. These subs will be pushed by a Crescendo BC2000D. (May eventually upgrade to a 3500 or 2x 2000's). Box is 5.0 cu ft and is tuned around 32hz. Heres what I came up with. My main concern is if I did the port length correctly and if I calculated the bracing displacement correctly.

Does any1 have a 12" Q in a sealed around 1 cubic feet? I want to know if the q will get loud in a sealed. Im thinking of replacing my 2 JL 10W7 with 1 12" Q or maybe I should just power 1 JL 10w7. The 2 w7s take up my whole trunk and i just want to get some of my trunk back. I have enough to put a Q in a sealed enclosure but have around 1.5-1.7 cubic feet for ported. My amp does around 800-900 watts at 4 ohms or 1600watts at 1 ohms so dual 2 ohms it is. Should I just keep 1 of my jl 10w7 and port it? Will that sound close to a 12 Q sealed?

I wanna do 2 15" subs (read Fi BL's) In the back of an 1990 Formula.........think it can be done without having a sealed box or a wall and still having a backseat?? God I hope so. J

Hey guys I was hopeing to get help on designing a box for my little brothers geo metro... He is over seas in the army and should be back in a few weeks so i decided i wanted to surprise him.. All I know is he doesnt want a wall built in the car (he likes his back window), So the max dimensions i have are 35" wide x 36" long x 20" tall. I have a mtx 1501d amp to push the beast so far and also dual alternators and 2 sp1000 stinger batteries. Any help would be very appeciated thank you.. also i could even try to send some money if someone did design it but no guarantees on that we all know how tight money is... Thanks Gator

Still need tinsel leads and a dust cap for an 18 BTL, older style

Hello guys! I am new to the forum, but recently got back into the swing of car audio. After 10 years of not having any bass I'm ready for my new build. Right now I have a basic setup in my 2011 Toyota Corolla S Kenwood KDC-X596 H/U Alpine Type R SPR-60C Components up front Alpine Type R SPR-69 6x9's in the back Hifonics GLX 100.4 running mids and highs Hifonics X1000.1 running the sub I'm going to pick up an SSD 12'' and run it ported. My question is this..... I have worked a lot trying to figure out the appropriate dimension in order to obtain 2.25 cu ft of internal space after sub and port displacement tuned to 33Hz. Each program gives me a little bit different nu…

hello i currently have one 18" bl in my trunk and the box pretty much takes up all of the usable space, i have this box : http://www.subwoofertools.com/forum/ported...mp;Fs=&CE=0 Anyways i was wondering if it's possible to fit a second 18 while still keeping the box dimensions because i can't make it any bigger due to space restrictions..any help is appreciated..thanks

I know no one probably knows really for the 09 lineup but would the BL 15 really get THAT much louder than the 12 if they were both fully loaded? Or would it be a noticeable difference? I want to know if it's worth waiting however much longer for the 15, or if i should just order the fudgeing 12 cuz im sick of waiting lol.

Just ordered my 15" SSD and cant wait for it to arrive. Now on to buying an amp for this little beast. It will be going into a 2008 Nissan Frontier 4.0L V6, enclosed in a 4.2cf. Ground Shaker box. My main concern is how much this sub can handle. Its the Dual 1 Ohm version along the flat wind coil option which Ive heard ups the power handling. Ive been looking around for an amp, Was looking at the Kicker zx1000.1 which puts out about 1100-1200W RMS, the MTX Xthunder X1000D, and the Alpine MRP M1000 all puting out similar rms W (1000-1200). I would like to go with the MTX for the reason that it is on sale for $269 on sonic. Ill include a product list below along with the mo…

well im trying to plan my setup... already got it down to a fully loaded for daily driving BL 12inch subwoofer to go with my RF amp that pushes 1602watts rms.... the box will be around 2-2.5cubes after displacement... have to run all the numbers after i gut my current setup.... and well i plan on running my same box setup in my civic to have it front firing into the cabin... and well i have a slot port in my box but im wanted to rebuild my trunk setup and this time instead of having a slot port id like to use some aero port or ports..... want to use some 4inch aero ports for the setup.. BUT im always HORIBLE with calculating ports.... ive always had people run the number…

hi i wanted to know if there is a downside to using an N2 recone on a ufo btl, because i have a friend with 2 recones and have no use for them and i needed recone. would they work?

I am wanting to know if these numbers are sufficient for a vented enclosure for for a 12" BL. I will have it hooked up to a MTX TA81001 A 1 ohm in the trunk of my 06 Honda Civic. Any suggestions would be greatly appreciated. Width: 36" Height: 18" Depth: 15" Port Height: 16.5" Port Width: 2.5" Port Length 1: 11.75" Port Length 2: 6" Total Port Length: 22.25" Port Area: 41.25" Internal Port Volume: 917.8125" Port Volume Displacement: 930.5625" Box Volume: 3.909 cubic ft Tuned Frequency: 32 Hz

Hey guys i have a 2009 silverado crew cab. i asked a few weeks ago how to get more bass out of my truck a few of you guys suggested raising my seats to accomadate larger subs and enclosure. that being said i raised my seats 4 inches. i now 3.8 cubes before any displacments. my questions are im looking for the best spl but i dont think ill have enough space for two 12 btls if i port the box. the box is 55 inches long and a port is gonna take too much space. the subs will be firing down into fatmat so i dont think im gonna hear much "music" out of them. any suggestions? thanks

Been debatin on 3 10" bls or 1 15" BTL off of 4Kw. I'm thinkin about goin with 1 15" BTL so i got some questions. What options do i need exactly for the following scenario? - It's for daily, tuned to 33hz, running off of 4kw of power. No SPL but i will be playing, sometimes, bass tracks for show off purposes. Absolutely no clipping guaranteed. Let me know if this is correct or if i should change\add something- Cooling, HIXMcoil, 3rd mag(do i need?), Daily. Can the BTL take 4KW daily? I know Meade does it but is it still safe in Fi's eyes? And i would like a discussion on the cooling option. It states not to get it if used for SPL. Can someone please define what specifi…

I was driving around and all of a sudden my btl quit. I have tried to rewire it using just one voic coil and noluck it wont even turn on... Any idea?

Wheres the BP option when buying the 12 SSD? Is it not offered any more?

First post guys, so please bear with me... I'm looking at a 12" Q for my sealed enclosure. Here's the thing, I've got an enclosure that's .88 cu.ft. I did the search and came up with what seems to be a optimum 1.2 to 1.3 cu. ft. Here's the question, how will this driver respond in the .88 sealed with 750w rms? Thanks guys.

Hey, i recently built a box for my 2 Fi X 12's, it is a ported wedge box 4.37 cuft after port and sub displacements. I have a 4 inch ,"precision port", flare port and is 6 inches deep. The problem is that the sub closer to the port moves more and im thinking that i could get more out of the subs if they both had the same movement. A little confused.. i was told that it would be louder if i would have divided the box and but two separate ports, one on each side rather than one on the passenger side. By the way i have them on a Autotek MM1000.1D