Fi Technical

preordered 3500d. now ordering subs i want bass,sq is a plus but i want more spl. i am going a sealed enclosure in a lexus gs400 i dont know the cu/ft. what would be better 3 fi q 12 or 4 ssd 12. and are the q the same displacement as the ssd, because then i could maybe do 4 instead of 3. then i would know the answer to my question. the 3 q would be dual 2 ohm at 1.34 ohms and the 4 ssd dual 2 ohm woulds get down to 1 ohm. plus it's hard to decide because i dont know the final rms of the amp.

would a BL 15 be alright all the way up to 5 cubes of air space? i know fi recommends 4 for optimal, but im just curious if it still sounds how its supposed to up to 5 cubes.

i have a FI bl 15,cooling,daily, universal d1, im (thinking of) adding another bl to my car (not like i really need it ) but is there i could wire 2 d1's down to 1 ohm?( wouldnt it end up at 1/4 of an ohm? or 4 ohms) i don't think you can but, hey theres always hope(or none) but i was thinking about getting an excessive amperage alt like a 250 amp, run 0g wire front to back add a kinetik battery all KnuKonceptz wire, with maybe a crunch or hifonics amp Ideas or comments?

im going to be buying a single 12" BL within the next week but i wanted to get started on building the box. its going to be powered by a hifonics bxi 1606d. i mostly listen to rap. i got these measurements set up. let me know what u guys think. as far as going bigger i really, cant limited by trunk space. its going in a 02 lancer. W: 36" H: 15.5" D: 15.5" Port Length: 3" total port length: 27" tuned at 32.8hz.

I have 1 15 BTL Fully loaded, i was playing it today and it started smoking then went out. I have it on a Orion Hcca 5000, the gain was not up it was below half way, i wasn't playing it for a long time, i don't know what could be the problem. If you have any ideas what the problem could be, or what I could do please let me know, Thank You.

I'm looking for the best box designs for this kinda of subwoofer? I want sealed because I want clean cut bass and me and my buddy are going be building the box tomorrow and sealed is the easiest build for right know till summer time. So any one have the best box desgin for Fi 10 Q sealed and test on it or pictures would be great. thanks lata

OKay so i got my car back... 15" Q in a (supposed to be) 4 cu.ft. ported box.... i love it so far and sounds great. i need to listen to it more tommorw. i hardly had any time today. but anyways, to the point... My box is 4 cu. ft. which means the port should be 48-64 square inches.... well i have 4 3" ports which is: 1.5^2 x 3.1415 x 4 = 28.2735 if the box is 4 cu ft and i replace the 3" ported with 4" ports, that would give me about 50 (50.264) square inches but how much would it take from the rest of the box? how would it change the sound and output? and how hard would it be to change the ports out? I think it may be restricting the sub a lil with such lil port area...…

Alright, vehicle is a 99' infiniti i30, 4 door sedan, I have two 15" Q's on a crunch 3000d-pro. The enclosure is 7.2 cuft after port, and displacement, tuned to 32.5hz. It gets pretty loud, but kind of a empty not real full sounding bass. The enclosure is built into the trunk with the woofers mounted invertedly, so that the magnets are pointed toward the back of the backseat. the port is firing out of the top of the box through a hole in the rear deck. It sounds like there is a lot of cancellation, and when I open the trunk and crank the system it sounds way better and hits the lows way better. I understand this is some sort of phase issue I believe, and have had o…

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

Hi All, So I've had my two 12" SSDs in a sealed box, 1 cu ft chamber for each sub, for almost a year now hooked up to a Sundown 1500D. It seems like I don't get the lows like I would expect and I'd like it to be a little louder. Do you think it would help to build a ported box for these guys to see if I can squeak anything else out of them, or is it possible that these subs just don't fit my wants? Thanks.

Will a 3.1 cuft enclosure (after all displacement) tuned to 38 hz work for a 15" Fi Q? With the size of my truck, this is the largest box that i could fit in there. How will this work?

I have an 12'' Fi Q coming soon and i needed a box and i dont have time to do one myself so i went to the local audio shop to ask him what would be the best option. The owner actually held the loudest street car for two years in a row fyi....but I drive an f150 and i have a spilt rear seat. I wanted to take out the smaller section and have the box in that area so it wouldnt take up room for my passengers. His plans for my box is to have the sub face the floor of my truck as well as the port facing the floor. It will eventually exit out the side (meaning the port). He says that it will have the right cubes and hz. He says that when the sub faces down, it will shorten the …

Alright well im going to be getting 2 18" FI BTL's reconed(The older version) and was wondering what kinds of new options I can get like diff dustcap or diff tinsels stuff like.....that Id want carbon fiber if posssible and also what are the prices on diff options...any tips on packing for shipping?

Dimensions: 41" Wide 33" length 36" heright 2000 explorer. Looking for deep loud bass. Any suggestions would be great.

I want to buy 2 Fi BTL 18'' with 4000 to 5000 rms each. they will be in a 2006 ford F-150 in a "blow through" i still dont have any amps, i normally listen to music with low notes. some guy told me that if i order a sub with 5k i could not play it for more than 30 sec cause it would burn. would that be true. how much would a sub run of this type?

What have you found to be a "sweet spot" for your 12" Q??! i'm running a SAE 1000D to it at 1 ohm. with BP option. i'm looking for both sealed and ported enclosure sweet spots. share your views here. by sweet spot i'm talking about where it makes you jizz when you hear it. come on don't hold back. i want it to be loud, but clean and tight, just like our women!.. well with the exception of the loudness, thats no good with the ladies lets hear it!

So I have a 10" Q I'll be running about 1000 rms to. What kind of box dimensions do you recommend. I bought a prefab box for $20 because I figured if it didn't work, oh well I'm out 20 bucks. Well, the Q is a little oversized for the box so I figured, well, might as well just build one. What dimensions should I build it if I plan to run the above mentioned power? Is the .6 cubes best or would it be better to have closer to 1?

Right now I'm in the middle of my build with 2 18" BL's with a Trutech Hammer H1 per sub in a 16cuft wall tuned to 30hz. After this I'm pondering changing to two BTL 18's with a DDZ1. Just wondering would it be worth it in terms of being a major leap over the BL's and the Hammers ?

I have a 12'' Q dual 2 ohm and it will be wired down to one ohm. I have a hifonics bxi1208d powering it. I wanna make sure i get my settings right on my amp. Where should i set the SSF at and the low pass at? Also since my HU has 4 volt output, should i set my level to 4 volt? As for the box, what hz should i have it tuned to. I listen to mainly rap and deathmetal...yeah i know complete opposites haha any suggestions will be greatly appreciated :)

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

Hi! I from Russia, me interest cost recone kit BTL12, 0.7 Ohms/coil ? Whether it is possible to deliver in Russia?

ok guys im gettin a box for 2 BTL's fully loaded...anyone have any ideas bout where to tune it to and how big of a box??? thanks

Okay so im going with a 12" Q with the BP option and an audioque 1200D amp. I want to port this sub around 33Hz. How big of a box should i make? I know Fi recommends anywhere from 1.8-2.5 cubic feet but what would be the best? Would it be better to go bigger than 2.5 cubic feet or should i just stay around that number? Thanks

I got a guy interested in buying my Fi Bl motor, but i dont have a clue as to how much to sell it for. The motor is practically new with nothin wrong with it. Any idea what price i should sell it for?

ok so one night i was sitting around thinking up some new box ideas. i really want to have my sub facing forward into the cab of my car, and have the port be on top of the subwoofer. so i was doing some concepting and came up with this, Box idea. I just want to know if it will work. i forgot to put notes so.... notes: 1. double baffle front plate 2. round port edges 3. 2.8 ^3 feet of airspace after all displacement 4. 3/4" mdf or particle board used. its going to be firing forward with the trunk sealed from the cabin. thanks, Anton Miller