Fi Technical

I just got 2 more 15 fi btl to put in a 91 blazer. The box I am going to build will be 38" wide 31" deep and 20" tall. I want both subs facing straight up with the port also straight up. I was wondering how big I should make my port. I am looking to get around the 32 hz mark. Also I will be bracing with 1 1/4 inch wood dowels and will be using 3/4 inch mdf.

been searching for the measurments of trunk space in my park avenue and this is what pooped up Trunk Volume (ft³) 19.1... now im not sure if this is the informatin thats need to make a box for me.. help me please

Can a BL 15 with flatwind coil, and p. chamfer take 1000 watts or so rms for an hour or so at a time, and 1700 watts rms for spl burps? Or does the sub need the cooling option? In 3 ft3 enclosure tuned to 48hz.

I have a 04 Honda Accord sedan and I was looking @ the 15" Q which would be daily. I have a couple questions 1. 1ohm vs 2ohm (amp running about 1000-1200 RMS) 2. SQ wise should i go ported/non ported? 3. I don't know if a 2 cube box would even fit in the trunk any suggestions @ all, im new to car stereo if you didn't already know lol. ANY INFO WOULD HELP! thanks, -B

Ok so i dont have much room in my car (well is a van lol) i have like 17" form my very back seat to the back window. Is that enough room for 2 15"s? I can move the seat forward like 7-8 inches if not more then i would have to take out the middle seat i would do that if its nessacery. So i will take pictures soon and post them so you guys can help me out tell me what to do. Im kinda new at this stuff so be nice. Lol

Can someone give me the screw hole diameter of the 15" Fi BL? I saw the outer diameter was 15.625" but did not see a screw hole diameter. I am working with limited height and don't want the screws to be lined up on one of the boxes wall. Hoping I can save around a 0.5" inch on the height just having the outer surround overlay on the outer 3/4" edge of the box. Thank you for any help! I would measure it myself but I am ordering the woofer in the next few days and want to start the build now.

Can anyone help me with a link or can someone help me design a tuned enclosere for a single Fi BL 15 with a max height of 17 inches? and a max width 36 inches? my first box for my first system.

What size ports are you guys using for your Q's? I'm building a custom fiberglass enclosure for my standard cab and i need some info on what people saw was the best result. I will be using round ports. To sum it up, what size diameter,length port do i need to not have port noise and have excellent sound. I was going to build it exactly to 2.5 cuft with displacement and port. Should i make the enclosure smaller? what are peoples views on this-Thanks

What would be good for getting the most volume out of my 10" Fi Q. I want it to go ported for some more output, and it'll be running off of a MD1D at 1 ohm (1200 rms). Thanks a bunch

I need help with box specs. I have 4 BL 15's going in a 2003 tahoe. I want to face them up( at the roof) and have these measurements; 48 wide, 28 high, 36 deep. Can someone give me a box layout or cut sheet with port measurements to make this a winner. Daily playing tuned low 29-32hz please. Thanks in Advance.

Hi, I have bought 2 Fi BL's and I am in need of some advice for a good box for it. It will be going into a 2010 Dodge Charger and the space I am working with is 18" H, 32"W, and 32"L. I would like to tune the box to around 33 HZ. I will also be hooking this up to a Hifonics 2000 for right now...hope to move to the sae 1200d later on. Any comments on dimensions for a box and port would be greatly appreciated. Also an idea of where to point the subs and port to get a decent bout loud sound. Thanks!

I have two ssd 15 inch. im building my own ported box. i cant find any dimensions. i want to have a single box, technically two separate boxes inside with a divider. can anyone help me with some dimensions

I got new 2 Fi 18's Q series unloaded, no options on them at all. whats the most amount of RMS power I can put on each one???? Im getting the Audiopipe 3000d amp and wiring them at 2 ohms and that would put 1500 rms on them.

for starters 2002 ford mustang gt double din jvc Big 3 upgrade 250 amp alternator running hifonics brx 2400.1 with 640.4 both brx changed up build was going to run 1 fi bl 12 dual 1 already ordered and on the way but ran into a fi btl 18dual 2 my game plan is to remove back seat and build sub enclose there web site says 5 to 8 cubes tuned 32 htz got just barely enough room for 7 cubic foot box with amps in trunk lol! Is it possible to get go low end with 5 cubes trying to open a little area other wise the 18 is 3 inches from my head in case I didn't say 18 is sub I will use also do have xs battery coming also I guess im asking for help to design size of box and port si…

when people talk about tuning their ports to 33HZ and stuff is that based on the size of the port. Also could i run 2 12" SSD subs on a hifonics amp putttin out 1500RMS or should i get one that puts out 2000RMS.

I used to get Chris @fishercustoms to do my box designs but their forum is not active much and Im not sure if he still does them. Who else does designs, need for 2 FI BL 18's in a wall in a 2012 scion xb

I want to build a sealed box 25X15X17 for a Q15 is that big enough? Should I add any bracing, if so where Thanks Jacob

Okay so the Fi Q15 recommends a Ported box: 2.8-4 cuft @ 28-33Hz.... Using the Measurements below will i successfully build a box 4FT^3 tuned to 33Hz ? Or is the Websire giving me False Info ? Website used is Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators

I just ordered my 12" Fi Q (w/ bp option) and i could never be more excited for it to come. I'm upgrading from a JL Audio 13TW5, mainly for loudness issues. I have a couple questions however... 1. Will the Q be much louder than the JL? The JL is running 500watts @ 4 now off a Kenwood 9104D amp. The Q will run off the same amp for now, getting 900watts at 2ohms. I'm upgrading cause the JL is shallow, only 13mm excursion and barely moves any air... And I loveeeee SQ subs, but also want pretty loud... 2. Now before you bash on me and tell me I should have gotten a BL instead, I must state that i drive a scion tc, with an open hatch area, which is where the sub will be sittin…

Just wondering what wiring i should use for FI BTL 15 or 18 power ground etc Thanks

im new to the forum and im building a box for a 18"btl and was wondering how this sounded. 33W x 22H x 24D 92^2 ins port area 6.241 ft3 of air space im tight with room so hopefully this is a good setup. thanks

hi there! im planning to purchase an fi q 12 and fi bl 12. i just want to know the shipping weight and shipping box dimension of these two subs. thaks in advance!!!

ok so the ssds are rated at 1000w ... so if you have them fully loaded ... what would that do for the rms power handling?

I have just purchased 2 15" BTL Fully loaded. They are on 2 mmats 2100.1. I just got them and they SLAM!!!!! I am seriously and deleriously happy BUT I know I could be happier. My box is very small for these subs and I drive a big car (Crown Vic) so I know a new box is a good idea. My current box dimensions are 48" Width 17" Height 17" Depth, measured OD......Port is 4.5" wide divided with .5" 15" deep 15" height, measured ID. This car is CLEAN CLEAN so with that in mind I don't want to go tearing it apart...totally. I dont mind ripping out the metal behind the seat or cutting the rear deck. Here is my goal: I want this system to BANG and does already but my trunk sounds…

hey, im ordering 2 BLs, i kinda have a design for a box, but need some help since this will be my first attempt at making one here is my plan i got a question on the length to the second port, i used the re enclosure so it game the the first, but does the second port wood need to be directly or close to the center of the subwoofer? and to separate the 2 woofers, do i need 2 pieces of wood or jsut 1? thanx