Fi Technical

how much airspace would you guys reccomend for 4 x Q 18's in a sealed wall?

Well my 1 18in fi bl mag cracked. Dont ask me how lets just say that i am very sad that this happen. And another bad thing that happen is one of the voice coils went bad in it to. I took one of the subs out of the box cuz i heard alot of buzzing. Then saw that the top magnet of the motor was split in half. I dont know why this would happen but it went from me bumpin super hard to only bumping a little with one sub. So if anyone has a BL motor please let me know or give me some info on how i can get it replaced thanks.

My fully loaded BL 15" came in today so started to design my box. I want to use an 8" aeroport and wasn't sure if it has enough port area. Box is 5.5 ft.3, 8"x17.5" flared aero tuned to 33hz and going to be powered by a DD M3a at .5ohm. Will the 8" aero suffice or will it choke the sub?

specs on 09 fi ssd 18

So, I ordered 2 SSD 12's last week, (currently have 2 Pioneer 307's in a ported box I made a while back) I was just wondering how to make a decent ported box for the new subs. Car is a 97 eclipse, and the dimensions I got were (15h x 36w x 20d inches) I might be able to go .5in more on the height and depth. Would the height of the port be 13.5in? What should the length and width be? I'm using BassBox 6 Pro but when I put in the info for the port it adds to the total volume of the enclosure which for some reason makes me think it is going to come out wrong when I build it. Any help will be appreciated. I'll be powering them with a RF P1200.2 Thanks.

i currently ordered a btl 18 with 2100w amp and i also got a new high output alternator and kinetic HC 1800 high current power cell to replace my standad battery and was wondering if i need another battery?? just confused because do i need one under my hood and one next to the amp or just one? and if i need two can i get one smaller one for the back?

sealed up at the kicks i hit a 144.8 with my single 12" BL. at the dash sealed i got a 144.3 the meter was an audio control. and i lost 1 db when i opened the window. song i used was airforces and hypnotize. they both did about the same number. Basically what i want to know is if this is a good number for a single twelve trunked car? could i get it higher by using a 50 hz test tone or somthing?

haven't been on here in a long time. i'm trying to run two of these, but i lonly have 2 cubes after displacement for each. i already built the box and i'm waiting on recones. it's tuned to about 37. just wondering if anyone tried btl 12's in the same size box and what you thought of it? oh btw amps are 2 t20001bd's. one to each woofer, dual 2 ohm woofers.

I have 2 mono amplifiers of the same kind and I have a dual 2 ohm sub. Is it possible to put each voice coil to each amp without hurting sub?

I have an ssd 10 under the back seat of my nissan titan and im havin problems with it hitting the grill i have on the box when it pounds. Ive been adding wood to create more space between the sub and the grill but i was wondering if there are any other techniques i could try. Any help would be appreciated.

ok so I have used a few different calculators and got different lengths... the box is gunna be 4.0ft^3 for a 15" Q tuned to 32 HZ on carstereo.com calculator i got H 6"xW 10"xL 28" on winisd pro i got 6x10x 32.9 L?? what one should I got with or are there any other calculators I should look at? also what would my port area be looking at and would I be in the recommended 12-16" range? Thank for any help -Ryan

OK, I'm going to buy 1 18" BTL today and I need to know what options to go with. I want to compete in SPL but I do sometimes want to be able to listen to music. I'm running it with a SAZ-3000 and I don't ever plan on adding another Sub. (I could never fit another) Yup so what options should i get?? thanks

the actual diameter of the BL 18? need to see how im going to have to design my box

Both setups will be run off of a Sundown Audio 2000D amp. I only have a space of 1.1 cuft per chamber to work with. I mostly listen to rap and want these subs to be able to lit the lows well.

Ive got a Kicker KX600.1 that I'd like to pair with a 10" SSD to avoid purchasing another amp. The amp specs are RMS Power at 2 Ohms 600 W x 1 RMS Power at 4 Ohms 300 W x 1 Opinions on this vs getting something for the 1000rms rating of the 10" SSD

I'm getting away from a ported box with my X 10" and going small sealed like .6ft^3. So what kind of power would get it rocking pretty good. I'm thinking around 300 but currently have 160 on it and love it. I want more sq and not so loud as ported. I love the sub and don't want a different one just different sound.

so, i got an enclosure built for my 12" BTL (single slug motor) but the magnet refuses to fit into the cutout. i was wondering what the cutout diameter would make it fit. i can't trim the cutout because its only enough for the cutout itself since the box is 14"H with only .25" clearance on the top and bottom.

i did some measuring and the biggest i can go is 4.5 or less.. so ill have to get a bl 15 instead of the 18 that i had planned.. and i plann on getting a hifonics 1606. box tuned to 32. what you guys think. should i get any of the options. heres the box i got http://www.subwoofertools.com/forum/ported...mp;Fs=&CE=0

i recently ordered a fi q 10 and it came in today i hooked it up to my RF p6002 wired 4 ohms and when ever i turn the volume up i hear a awful rattling noise it sounds like it is coming from under the dust cap. i read through the forum and found another person that had the same problem and i think it said his dust cap broke the glue loose or something. if this is the problem how do i fix it? and what do i need to do to fix it? again this is a brand new sub and has never been used before. does fi even test the subs before sending them out?

ideally, what would be a good power range for the ib3 12 inch sub?

hey nick just tryin to see if this was indeed fixable, i got it from david (basebalz13) the magnet is cracked and its seized. i got pics not sure if david showed you or not already. if you want i can upload em.

i am building a box for 1 18" btl, going to be about 8 cu.ft. (actual is 8.02409) and tunned to 32 hz. i have done the calculations and does a 10"H X 3.75"W x 7.24"L port sound right?

Ordering one x12 4 ohm sub today with BP Power option. It will be running in the 320 to 400 watt range. The specs call for a box .6 to 1.1 cuft. Why is there such a range and what is the difference if i built a box at .6 cuft versus building it at 1.1cuft? I have the room to build it to the max dimensions, just would like some more info? How do I figure out exactly what size I need to make it sound great? I listen to mostly older rock, 70's and 80's, but some newer stuff to as well as a little rap if it is a good song.

Any thoughts or ideas on 2 12" FI BTL's (Fully Loaded) in 5 ft^3 with almost 154 in of port area????? Tuned at 32 hertz.... I understand that it is going to be an extremly long port almost 71 inches. but i have ideas for that.....Planned on using 14 inch round pvc pipe with a few 90 degree elbows in it. and how would u go about measuring something that has that many bends. Also i planned on the port having its own chamber with only the end into the part of the box where the subs are to reduce flexing and hopefully where more air flow goes into the port. But it might be a crazy idea. So if anyone could give me some feed back it would be great!!!! Thank's, Brock

Ive got 2 BTL 15s and i wanted to make sure my calculations were correct before i started building. The total room i have to work with is h=23 w=24 l=39inches. Total internal volume is 10.5 cubes, and after all displacements i have 8.65 cubes. the port dimensions are h=22.5 w=4.5 l=18.4 which should make the box tuned to 33hz. can someone check this for me to make sure i didnt make any errors. Thanks Keith