Fi Technical

Does anyone have the specifications for the last model of the Q 18? I no longer have my saved WinISD profile, so that would work as well. Thanks!

Hello everyone, I'm still trying to decide whether to buy one or two FI 15 BTLs. I will be buying each sub with: dual 2 Ohm, cooling package, HiXmCoil, I heat ring, and will be set for daily. For each sub, I was planning on either running a Hifonics BRZ3000.1D Pro with 3,000 watts RMS @ 1 Ohm, or a Memphis MC1.4000 Mojo which has 4,000 watts RMS @ 1 Ohm. Will the FI BTL 15 be able to handle 4,000 watts? or will the 3,000 watt amp be a better choice? Money is not an issue, and I'm going to do the Big 3 under the hood. I am also looking for the dimensions of a box for either the one or two 15s. The truck is a 2009 Chevy Silverado 1500 extended cab. I'm going to remove the…

I'm thinking of buying a FI Q to put in a sealed box in my spare tire well. The dimensions I have to work with are 24"(width)x26"(Depth)x10"(height). I'm a complete noob when it comes to building boxes but want to try to do this one. How do I figure out if I can make a box that will work with the FI Q with those dimensions and what size to make it etc?

hey whats up guys just got my box built from this guy that has built them for me before and never had a problem but this one just looks not right so i need help from you guys....the deminsions are....width is 48" height is 22" depth is 31.50 port hole is 3.75 x 22 port length is 27.75 and it is supposed to be tuned at 32hrtz...does this sound right or do i need to have him redo it thanks if i forgot something let me know thanks again

Does anyone happen to know the magnet diameter on the older style Q10? I'm working on a new enclosure and have some very odd space constraints. If anyone could help me out that would be great. Thanks in advance, Mike B.

My friend is buyin a Fi Q with all the extras and we were wandering if any body had any old box dimensions and i dont want the dimensions from the website Q 15 – We recommend using a sealed box in the neighborhood of 2-2.6 cubic feet of volume. Ported box we recommend using 2.8-4 cubic feet @ 28-33Hz. Again use 12-16 square inches of vent area per cubic foot of volume. so plz if u have some dimensions for an 15" Fi Q ported box Thanks

Well it's time to move my set up from the S10 to the 325ix and have been crunching numbers to draw up a box. Right now I'm running my Q10 sealed at about 0.4ft^3 on a SAE-1000D at 2ohms. I will have considerable more space in the trunk of my car so Im wanting ported tuned to 27~28hz. I planned everything out so at net box volume of 1ft^3 I can use 3'' PVC at 22'' length to get 28hz. Now i'm no expert at enclosure design but I feel one 3'' port not flared will be too small? Pi*1.5^2= 7.06in^2 of port area. Id like some opinions on the matter. What do you guys think? Thanks, Mike B.

I have a 15" fi. I got it used. Idk if it's a bl or q. How do I tell?

Im wondering what amp to run for a dual 2 ohm btl 15 with cooling, HiXmCoil, Daily, I Heat Ring. what would be the best bang for the buck? My budget is around about 600 but will pay more if its worth it. Thanks

Im looking for some peoples opinions on what to run to my bl 12 at 2 ohms.? comments are very welcomed

so i've got up to 15 high x 32 wide x 20 deep to build an enclosure for my fi btl 12; it'd be going in the back of my jeep liberty. and im planning on using this sub daily on an alpine m2000 that i just got and the birth sheet says it'll put out 2274 watts, so i'll be playing it at its max. but i also want to start entering the local spl comps and i know the fi site says that 30-35 hz is where it should be and 32 is optimal, but i was wondering what would be the loudest hz for my application? thanks in advance

hello i was just wondering if i could get an update on my sub...i sent it in last month and got a reply that it was in....and then replied back to fr...and haven't heard since thanks....josh

I have 2 15Q (1st gen with no options) with 2 saz1500d and it gets hot over a short period of heavy bass music. I was wondering is there any way I can increase the power handling of the sub. I am not from the US so to ship the motor over to get the partial BP would be expensive. would it be possible to use the BTL spider on the Q or other options? I know changing the spider would increase Fs and Qts but would it be significant? thanks

Whats a good port length for the BTL as a daily driver tuned around the recommended 32 hz and 14in^2 per cube? 2000rms power. Enclosure will be glassed into the side of my trunk and I have around 4600in^3 before any displacements to work with. So should be around 2cuft after. Trying to see if I can make a ported enclosure work or not. Thanks!

Waiting till thursday to order teh new 12" Q but I want to get started on the box... I've got room for a 29.5x19x8.75 deep box... (this is going in the back of a 350z) This puts it at about 2.05 sq ft after the driver displacement. I was going to go sealed, but have changed to ported... I need to figure out the length of the ROUND port to use... I saw a post on the 350z forum where a guy used two 3" ports at about 32Hz "needed 34" total of 3" port to be tuned @32Hz" Can someone confirm, using your awesome math skills, that 34 inches total of 3" port is correct? I'll need to split the ports into two ports... I'm aiming for this look... FI Q12 in the Z... - MY350Z.COM For…

Hey, just contemplating buying a Fi Q 12" off someone and he claims it is "Fully-Loaded" and after asking him is there is any proof of it being fully-loaded he said no. He then said now that he thinks of it, he's not sure if they are, as he only got told that when he bought them off someone else. So, is there any way we can verify if they are fully-loaded or not? Say a Imprinted serial number somewhere and you might have that particular build in your files somewhere and you can see if they were upgraded? Oh he has 2 for sale, thats why i said "If they are fully-loaded or not"....my mate might get the other one!! Thanks, Regards.. Craig

I should be getting my new ssd 12 soon and a alpine amp that pushes 1krms at 2 ohms. I was wondering if the sub will handle 1k without any problems. I usually dont have my radio blasting 24/7 (but like to show off for a song or two) and most of the time im listening to rock/metal. It will be in a sealed box and i got no options on it but Hqts. So the real question is can i run the amp all the way up (gains set correctly) or should i run about 3/4 level. Thanks for the help.

I have a 08 chevy crew cab I need to build an enclosure to go under the back seat for one Bl 12" 1 ,0hm I am running a T 1000 fosgate amp this will be a daily application I know I will need to raise the backseat a little I plan to raise it 4" but I would like to build an enclosure first the area I will have to work with when the seat has been raised will be best described as a wedge style box 55" wide 16'"high 8"D1 and 11"on D2 with a notch in the middle for the drive line tunnel if anybody can help come up with the die-mentions to build an enclosure for this I would be very grateful and also any recommendations on were and how to port this properly would be he…

I got the box built a few days ago.. just wondering if I could throw the dimensions out here and you guys can tell me what it is size wise. He told me its around 8.7cubic feet and i think he said 32 hz is what its tuned too.. damn thing is huge, but here is the measurements 48 1/4th across, 20 1/8 height on the face plate, 24 1/2 tall.. the port i wasnt 100% sure how to measure properly so ill tell you what i did and if im wrong correct me and ill run out in the garage and re measure. I basically stuck the tape measure in the port, hooked on to where the inner port board stops and took that as my port depth measurement, which was 17", port is 6 7/8 wide, 18 1/2 tall, its …

Hello I'm new to this forum as i have just purchased a used Q18 " sub and i want to get the best from the sub for my suburban, i listen to rock and rap and i want to make a ported sub enclosure for it, sub up port back. my question first is could anyone help me design a enclosure with the best tuning for all around use? i love the lows but i would like it to not only go low but have a punchy bass aswell. if anyone could help a Fi newb with this it would be much apreciated. thank's i'll give specs of the area i have to work with, 47w 24d 22h ,99 suburban using a fosgate t5002 pushing aproximatly 800 watts, my goals are just a daily driver setup with good sound quality. an…

Still need tinsel leads and a dust cap for an 18 BTL, older style

okay, so i've got a fi btl 12 fully loaded. but i dont know which amp to put on it, i want to use it for daily driving but also be able to put up some numbers in the spl comps please help me out thanks

i have purchased two 12 inch FI Bls both are dual 1 ohm, and have cooling and hyperpoles. i am purchasing a box from sonicelectronix.com that fit the specifications of the subs. my question for you is wich amplifier would you recomend? i plan on wiring both of the subs for a 1 ohm load so i was gonna go with a SOUNDSTREAM PCX 2000d any suggestions ?

ok i have a 15" fi btl with a sundown audio saz2000d. i built a box (3/4 mdf) with 4.5cubes of air space after sub displacement. i have it tuned to 33hz,(slot port) it sounds pretty good, i think , loudest sub i have ever own lol... im just wondering if it wouldsound better if i seal off the port and add some round flared ports ?? any thougths ? ideas ? sorry for the stupid question... please sum help... should i leave my box alone ? build a new one ??

I just got my bl's today and had my local shop make a box . The dimension's are 4.5 cuft 43=wide 19=deep 15=height port is 4=wide 12=height and he said its tuned to 32 htz. does that sound right? I am currently running a kicker zx 1500.1 to them, my question is, do i need to let them break in or can i pound on them? I know im way under power, but im not sure.Any and all replies are greatly appreciated.