Fi Technical

Ordered a fi btl 15" fully loaded have a hifonics brz2400.1d I know not the greatest of amps but too much or too little for that sub I know everyone saying the can take more than 2000rms but how much?

all my life i have been a sealed guy, i just love the sound of a sealed setup and how low and deep they can play, so i got talked into going ported for my next system..im going with 3 18'' fi Q series, fi suggest 6-10 cu ft per sub, im thinking of going in the middle with 8 per sub, im also going to throw 800 watts at each one, what do you guys think about this? i will be using this for daily driver and i listen to both rap and rock music..so im hoping the subs can keep up with the fast beats..also 28hz sound good to you guys?

Im gonna get 2 12in BTLs and I was wondering if they could handle 3,000RMS or higher and not have to worry about it, and the sub would be a daily sub but fully loaded otherwise.

I think it's just me, but there are some random gaps if you will. I have some pictures from my slr that i'll upload in a while. Just want to make sure theres nothing bad. Thanks

Hate to be that noobie, but I've scoured the web and everything I can find for the options refers to the old options and none of the newer ones that are selectable. Could someone help a noob out here? haha.

My enclosure is strangely shaped because of my spare tire, but it's 4 cubes @ 32 Hz with 58.5 sq. inches of port area. My Q15 has the BP power option and I'm powering it with a Sundown Audio SAE-1000D. My headunit has 2V pre-outs and the 1000D has a 0.2v - 6v adjustable input sensitivity, so my gain is about 3/4 of the way up. I have an Excessive Amperage 250A alternator, big three with 1/0, 1 group 65 Duralast Gold battery and 2 Kinetik HC1800 batteries wired in parallel with 1/0 gauge... Does it seem like I'm not getting a lot of excursion? "white girl" by U.S.D.A. vid 1 "hood nigga" by Gorilla Zoe vid 2 "choppin' blades" by UGK Vid 3 Vid 4 Vid 5

I need dimensions for bl 15 ported box?? I have a hifonics bxi 2008d amp to go with it. and this setup is in a 2001 dodge ram 1500 sport, so the box needs to be on my back seat. any help will be appreciated. thanks.

i know first thing everyone will say is why sealed, ive just been a sealed type of guy all my life, nothing against ported..but its not my taste..so i know on fi's site for 18's they suggest 4-8cu ft per sub..im having a shop make my box for me so its not like i can experiment with different sizes..so for a sealed application and for a mix of rap and rock what do you guys suggest in a box size for each 18? space isnt a issue its going in the back of a denali

were can i find a ufo style btl at ive been lookin for a long time now

I am getting one 10" Fi SSD sub-woofer very soon and I am having a bit of trouble on what to do for the enclosure. I drive a small, 1998 Ford Pickup, single cab. I am convinced, and determined, that it is possible to put a sub in any vehicle, but there really is very limited space back there to put anything. Does anyone have any experience or suggestions? I am looking for the best sound I can get, but I understand if it won't be optimal. Getting the materials and building it will be no problem, just need to know how to tackle this.

I figured I'd start this topic because I have noticed there are a lot of people asking this questions, I even still have a few questions. The most common besides enclosure questions is those about how powering the BTL, so maybe this will be a good blanket to answer many questions. Q1. When most people buy this sub they don't have an enormous expensive amp to power it to it's full potential-as most people just want something to hold up good for daily use and don't plan on seriously competing with it. Being that the RMS is 2000 watts, is this the minimum recommended? Obviously 500 watts will make it play, but to see good results what is the smallest amount of power recommen…

just crusin didnt even make it off my street sub up like half way.. sub cuts out, amps not in protect, no sound whatsoever out of the sub... pull out the DMM.. 2.1 ohms resistance at the wires out the sub (my dual 1 BTL in series) ok.. sub is not blown? set to voltage.. check the outputs on the amp got fluctuation in voltage with music on, unplug the RCAs voltlage stops fluctuating.. so i figure I'm getting signal from the amp, from the headunit, to the sub... where the hell is my problem I'm stumped.. Dual 1 ohm 18" BTL in 6.7 cubes@31hz in series to 2ohms Hifonics XX-Cyclops wired to 2 ohms ~3KW RMS been running it this way for about 2 years maybe longer.. didnt c…

Hey I going to be getting 2 Fi BTLs fully loaded with the daily instead of SPL option, should I get the Rockford Fosgate 4000-1BD or Sundown 3500D?

I have (4) N2 15s walled in my car. They've been installed for a couple months now and have been ripping my head off daily. Doing a 155 outlaw at 28hz! Anyways, today I seemingly lost a coil on one sub. No smoke or anything of that nature, just for some reason one coil on one sub is done for. Took the sub out and the voice coil looks fresh as can be. The other coil on the sub also reads out just fine. All of my other subs are also perfectly fine. Really have no idea what the hell happened. Subs were bought brand new from Fi of course. Can or would this be fixed under warranty? I'd really like to get this taken care of before the comp season starts heating up here.

I just got my BL in the mail from Joseh K. and USPS has fucked my basket UPPPP Could this be fixed my some very careful welding? I mean what else is there to do with it.....

Does anyone know where I can buy these plans or get them for free I can't find any.

right now i have a fi ssd on an aq1200d but i want to get a btl and maybe score the free cooling option before july 29 but i haven't been able to sell my aq1200d so i'm thinking bout keeping it and just buying another one and strapping them together but i will only be able to run it at 2 ohms so what would be better 2 aq1200d's @ 2 ohms or 1 aq2200 @ 1 ohm ? and how would i wire the 2 aq1200d's? this is my first post so sorry if it's messed up at all lol

Received my 2 fi BL 12s yesterday, I'm very satisfied with em but I believe they will get a lot louder in a different box design, I currently have a 34w x 15h x 20d "maximum size box that'll fit" with a slotted port on each side of the subs, I'm unsure on length of port its been 3 months since I built it, believe im tuned around 34hz, I'm running 2 1500's strapped "1ohm per amp" n 2 yellow tops, anyone willing to design a box that's no bigger then the dimensions above as far as tuning I'm thinkin 32hz I listen to rap music n demo with decafs any help is highly appreciated

Whats up, Can anyone give me advice on how many cubes my sealed enclosure should be and what it should it be tuned to? I will give it hopefully 1300 rms with a hif1606d. I listen to about 80 % rock/classic rock/metal/blues/acoustic live chit and about 20% rap but I will probably listen to more rap since I will have a sub. The sub needs to play 80hz and below. My goal is pure sq not spl Thanks for any input Captain SSD(lol and its gonna be a q)

the thread is much more developed here http://www.caraudio.com/forum/showthread.php?t=265327 but i will post here anyways, since i would like to get an idea of what some new tinsel will cost me so i can try to do a repair. so my btl stopped working today when i was listening to it on volume 35/70 on the highway. i thought maybe my wires came loose. get home, pull out the woofer and this is what i see at first glance i thought i clipped it. i take a look at the coil...its fine. never smelled anything either and everything is in the same condition as when i recieved the sub. and the other tinsels dont look burned to me at all. i am the third owner of the sub. it does loo…

Someone with a lot of experience might be able to tell me what the results of my plans could be? I really don't want to make another huge box a month or so from now, and wood is expensive, so I was planning on building a 20cube box @ 32hz for my 2 btls 18s I have now. In another month or so I plan on getting another 2 btls, which I could simply cut 2 more holes for them and use the same box. does this sound reasonable? I'm sure the first two subs would be OK with that much space, but will there be any real negative effects to doing this? I know there will be a slight change to the specs after the displacement from the subs, but it will only be around 1/2 a foot. Thanks a …

I have a bl 18 with a jl 1000/1 running it..the other day i was driving and it jus shut off, I checked to see if i could see what was causing it and the amp was still on but the sub wasn't working..a little bit later it came on and would shut off after it hit a couple times. Then it came on one day and worked flawlessly for 3 or 4 days and now its shutting off again. I think it might have something to do with the temperature because the days it worked it was 50-60 out instead of in the 40's on the days it shut off. I checked the ground and all the connections and they're fine. what do you guys think it could be? please help me out thanks

got my sub couple of days ago and need a design. its going into a 99 cadillac escalade so theres plenty of room... can you guys help?? listen mostly to heavy rock and some rap.

Like the title says can i put a bl in a sealed box. I know it recommends a ported box but why cant i put it in a sealed box? thanks ps. I already have them before when I had space for a nice size ported box.

I'm currently a college student majoring in Electrical Engineering. A few years back, I competed in roughly about two MECA competitions as a hobby. The experience was great, but short lived. With my new schedule, I'm able to juggle classes and a job. With that said, I've decided to go back into competing so that I can have something "fun" to do outside of studying hard during the week. I'm specifically looking to compete for SPL in MECA. What I buy from Fi will strictly be based off of the new point system for MECA. There are several classes, and I'd either like to compete in either Street 1 or Street 2. Street 3 is simply above my budget as a current college student. The…