Fi Technical

Hey guys, I've been messing around with ideas for my subwoofer and I have a way maybe that'll help with my predicament. Currently, I have a 1995 Honda Accord Sedan and the 18" is to big I believe to fit in rear facing. Currently I have it horizontally mounted. However...after looking through some of the build logs, I am debating about whether doing a slanted box or not. My question to you guys is, what types of effects will I see of this? Ideally, I wanted to do it rear facing. But i dont think that will happen. So i've compromised with it angled. it will still be around a 5 cu ft box and about a 60 degree angle the subw ill be mounted on. Any big difference you guys thin…

Does anyone now what happens to your cars electrical system when you strain it? cause i have not upgraded my alternator and my capacitors and lights dim horribly, only upgrade i got is a a red cap battery

I am buying 4 15's and I wanted to know which was the better choice. I understand that they both have the same RMS wattage I am going for more spl and lower bass. I wanted to know which sub would produce more bass in the lower octave. I have no problem as far as space I just wanted to know which produces more output.

Putting a brand spankin new 15" Q dual 2ohm in a 97 honda accord. This is for daily music kinda stuff, no comps, I just want it to be clean and wang on the lows. I was wondering if anyone has had experience with these trunks and knows what can fit in em. I am thinking that ported would sound best but am open to all suggestions. Also, if ported should I go with slot port, aero, other? If my measurements are correct, Max we're looking at 17 tall x 32 wide x 22 deep. Will a ported 3.0 ft^3 sound as nice as 4.0 ft^3? Any help would be great

i need a btl fully loaded d2 18 recone (w/ old style motor) if anyone can help plz let me know

I'm wondering if this is a good idea. The box being 12 cubic feet @ 35 hz with 189 square inches of port. That's about 15.7 square inches per cubic foot. I can tune slightly lower, but will sacrifice port area. Is this a good design for daily driving?

I was planning on getting a 15" ssd for my 95 saturn sl2....the problm is my trunk isnt the biggest. I have enough room to make it the recommended 3-4 cubic foot box but i would have to face the sub towards the top of my trunk. If i did this would it still sound as good as if it was facing the back of the trunk, and where would I have my port facing. Can anyone possibly make me a box design that would fit in my trunk for the 15" SSD. the trunk is about 15" tall, wheel well to wheel well is about 35" and back to front im not to sure. I would greatl appreciate some help on this. I was also planning on running my Us amps xt2000D on it.

need help guys ..i cant decide what to get ...here is a little info,i have a trans am and the box i going to get that fits the rear well it has 1.92 cubic feet per side ...i was going to go with 2 15" or 2 12" ....the amp i am going to use is a sundown 1500d the 2-12" i was looking at are FI SSD or FI Q and the 2-15"are fi ssd or fi q...its a sealed box ....for that amount of air space (1.92cu ft per side) what would give me the best bass sound...thanks

Hey guys right now I have 2 12" ssds running off us amps 4000.1 (1500 rms) and the subs are in 2.5^3 ft per sub @ 33 Hz. The box is just soo big and so hard to deal with and I want to build a sealed box and see which i like better. Is it normal with this large of a ported box i have a very weak upper end?? I want to put the ssds in the best suited sealed box. I have an avalanche and the box goes in the bed so i have plenty of room. I was thinking somewhere a long the lines of a sealed box around 1.1-1.3. You guys know these subs the best so if you were going to build a sealed enclosure what deminsions would you build it to. I have plenty of room so it doesnt matter how wi…

Hi, need some blueprints for my 15 inch fi btl fully loaded. it is feeded with aprox. 3 kw. the enclosure is used for spl competitions only, perhabs a flared port is the better choice. The woofer is going in a 1990 volkswagen golf mk2 and the car peaks at 52-55 hz. I'm of course ready to pay for the blueprint. The max width is 37 inch, feel free to the rest, it doesnt matter. Please email or pm me or just post in here Patrick :-)

Hi, have my new car since a few days now, a 08 BMW 330xd :bigclap: :bigclap: :bigclap: But this time i just want a lil boombox in the panel of my trunk. I just ordered a 10 inch Fi SSD Dual 2 Ohms today and expect it by the end of the week... I wanna put it in a sealed enclosured like this finished looks like this I measured about 0.5-0.6 cu ft What you think, will this work fine?? And it gets about 900 RMS

Hey team well i got a deal cheap on a btl fl , and usps dropped and part of the basket broke. Can it be replaced?is it hard? Will fi car audio sell the basket alone?

Not at the same time! I have two boxes built for my single 12BL. (D2, loaded, daily) One is 2.5cuft @ 32. Slot port. Homemade The other is 2.0cuft @ 32. Kerfed port. PTS They are both designed around the 12BL t/a parameters. Two questions. Is the BTL a substantial upgrade from the BL? Could I use the 12BTL in the same box which was designed for the 12BL?

Will somebody please explain to me where the length of the port is. In order for my box to be tuned to 32Hz it has to be 22.5" long but which piece of the box is it? is it C or B?

I know to pilot my screws, but the problem is i'm using 1 front baffle for the sub, and maybe i'm wrong, but i just dont see 3/4" screw holding that for that long. am i wrong or am i supposed to use a different kind of screw?

to whom i can talk to about dealing this product " fi car audio" here in our country? i already emailed it at [email protected] but still no one's answered , hope some one could talk to me about this. thank you very much

ok so the set up would be 3 12" BTL's (fully loaded) and 3 sundown 3000d's..I'm lookin for some basic dimensions for an encloser and some places online that can do a quality build.Also,any suggestions on port Fq. would be appreciated..It's gonna be a daily driver in a '96 impala trunk so i have room to play with.Thanks!

i sent my mt motor to you ...it will be delivered this upcoming monday..i have the tracking number if you need it...my email address is [email protected] shoot me a email after you get it fixed, i have a paypal account , i will pay a.s.a.p. ..

Hey guys! I was wondering what any of you with a Q 18 set your crossover or lpf to? Also what type of crossover? Right now I have BW and LR filters to choose from, 6, 12, 18, or 24db/octave and 12 and 24db/octave, respectively. A simple frequency recommendation would be great though, hehe. I have tried many values from 70 to 180Hz but can't really decide. Are there any tests I could do to help me decide? Right now I have it at 127Hz 24dB LR which seems to be fine but I still feel indecisive. Thanks!

hello im from turkey..there is no fi sellers in europe i wanna make order via net and got some questions.. whats the weight of fi btl s aprox? which amp do u suggest for this monster?i only know 3 for this baby first one kicker zx2500.1 second ground zero 1.3000 and last one hertz hd1k and u can suggest good ones if u know something kick ass for this btl..

like it says want to build another box for my btl if someone could help with some tuneing and a 3rd dimention it would help thanks. Oh it would be a 1/2 wall can go 36X20X?(maybe 24 to 30 inches) external and would like to tune to 36hz feel free to PM me or answer here also there will be 6 in internal radius corners on the backside and matereal would be 1.25 in thick. Thanks for any help MC

Ok guys I need a little input on a few things. First off, I was running two FI Q 15's off of a 40.1 @ 1 ohm in a 8cuft box ported to 28hz and blew one to hell and the other one's coil is burnt like a motha... So I was thinking of going with either one 18 BTL or two 15 BTL's off of the 40.1 @ 1 ohm. What do you think? Either setup will be tuned to 32hz. I was planning on modifying the current box if I go the 15 route, but if I go with the 18, the box will be around 7.5~8 cuft tuned to 32hz. This will be a daily driver setup.

Currently I am running my 2 15" Fully loaded Fi Bl's (flatwound coil, cooling, p chamfer) off 2 1500ds. I am about to buy some 18"s. They have cooling and flatwound but no p chamfer. How different are the 2 gonna be in handling since the 18" ones dont have the p chamfer but my 15"s do.

hello i have a fi btl 18 triple stack im looking to put in the back of a ranger is there anyone who could help design a box i have the top dimension to be 12 and bottom dimention to be 21 and the width no longer than 48 and heigh how ever long it needs to be id like i tuned to be loud as possible lol please pm if you can help

If u get the full cooling option on the btls does that include the pole piece venting also as well as the side venting. Or is it just the side venting and the pole piece is covered?