Fi Technical

I am getting some 15" btls. I was curious about how I should get it made. I know I want the p-chamber. I read that if you get the 3rd magnet with no cooling option, this is better for SPL. So, what happens if you get 3rd magnet with the cooling option. This is going to be a daily driver with, hopefully tons of SPL, but I don't want to kill the sub and replace it or fix it consistently. So, which option with these should I go with?

I was looking at the options for the new 12" BTL im getting and i cant seem to find anywhere on the site that explains what the "HiXmCoil" and "I Heat Ring" do sorry if i overlooked something thanks for the explanations in advance. Tyler

Hello all I have just received 2 FI Q 12s dual 2ohm subs. Now I am having all kinds of battles with self over what to do with them!! 1st issue is my amp is a Memphis Belle 5ch. If I run both subs, my wiring options are .5 ohm, 2ohm, and 8ohm. The amp is not .5ohm stable, only has 600watts at 2ohm, and not sure what it would be at 8ohm(only 400 at 4ohm). Would 600 be enough watts for 2 subs?? I have a Trans Am so if running both, I would have to have a sealed box. Is this doable without changing amps? I have been thinking of just running 1 sub and selling the other. If I do, I could choose a sealed or a ported enclosure. I have read the sticky about enclosure size my qu…

i only have about 2.0 to 2.2 cubic foot to work with before sub displacement and port displacement. i know the 12 calls for 1.8 to 2.5 before displacement so i was wondering if it would be better for me to run 2 10's sealed and be more efficient instead of trying to squeeze in the 12 ported edit: sorry i hate this computer i meant 2 10 sealed or 1 12 ported sorry . . .

Well I just recently bought a Q and since I was eager to listen to it, I put it inside the only box I had. The current box is a sealed box with about .9 ft^3 after displacement. Since its on the smaller side I threw some polyfill in the box as well. Now I want to build a ported box and I honestly have no clue as to where begin. I read through several pages, and found some plans but they don't suit my needs. I also searched online for calculators and only came across the RE calculator. I don't know how accurate it is but it kind of gave me an idea how port length affects tuning frequency. I'm a little tight on space and have a maximum of 30"w x 16"h x 16"d. Matter…

all right so i currently have 1 12" bl 2008 model and im thinking up my new set up and im throwing some things aorund. i was thinking one 15" btl or 1 12" BTL but then i remembered that 2 12" BL's should be louder than a single BTL and i was just thinking how much louder would 2 12" BL's be compared to 1 12" bl. It would be 2 12" BL in a custom ported enclosure in the trunk of a little cavalier 2 door. it would be 2.5 cu ft per sub with 39 sq inches of port per sub and a tuning of 32, and on a rockford 2500 (be approximatly 1400-1500 per sub rms) compared to a single 12" bl in a 2.5 cu ft after displacment tuned to 34 hz with 39 sq inches of port. also on a rockford 150…

Hey Scott, I tried emailing you about some recones I need. I tried the [email protected] but I got a delivery failure notification today. Does your email no longer work? Please let me know how I can get in contact with you.

how much would it be to recone a FI BL 18'' sub, like send it in and get it done? thanks chop

I sent an email asking this but never got a reply. I was wondering if i could seal up a SSD 15? If so what would be an ideal size for the enclosure? I checked the specs under the SSD section in the sticky thread but all i could find was "we are still testing sealed enclosures" etc. Thanks.

i need help with measurements for a enclosure build for two fi bl 12 tuned to 32 hz. i can build this enclosure up to 4ft wide 18in deep 18in tall im looking for this to be a 5 cb ft volume... thanks for your help i need all measurements and slot port width lenght measurements... again thanks...

Can anyone help me with a link or can someone help me design a tuned enclosere for a single Fi BL 15 with a max height of 17 inches? and a max width 36 inches? my first box for my first system.

i wanna run a fi ssd 18 off a us amps xt 1600.2 in my sebring.. but im not sure if i have required space for it in my trunk.. i would probly have to face the sub up and port back to make it work. what do you guys think..

I am looking to build an SPL box for two 15" Fi SSDs with copper coils... I am just going to switch out of my daily box to this box when I go to competitions... What size box, and tuning would be best? I have a '95 4-door Blazer it will be going in.. I was thinking something along the lines of 6ft^3 tuned to 45hz..

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.

I saw NDMStang65s post and how he hit pretty good numbers with a single 18" BTL and a hifonics bxi2008d. I'm getting a set-up like this and I was hoping ( talking mostly to NDMStang65) If you could hook me up with a good box design to let the BTL get loud Thanks! Cody

I'm currently trying to design an enclosure for 3 Bl 10's i've got 1.85cu.ft of volume (total), with displacement. What sort of port area and length would i be looking at. Also, i can increase the volume slightly, as that is with 1inch MDF

Does the sub come with aluminum or copper coils? sorry if theres a thread about this but i looked on the site and couldnt find a difinitive answer on this. Also what exactly does the BP power option do, does it effect the sound of the sub whatsoever or is it something just to help with thermal capabilities of the driver? thanks in advance.

hi i need to rebuild a couple tc9 based eclipse subs and i was told this was a good place to look. how can i go about purchasing a recone kit or two? they are 12" subs dual 4 ohm coils. im looking for something that can hopefully handle more power than the eclipse coils thanks in advance chris

i know this is a real noob question but what is the cutout diameter of a btl 18"?

Well my computer crashed and I lost the t/s specs I had saved into win isd for my older model 15 inch Fi Q dual 2. I am throwing around new enclosure ideas but the specs for the new Fi Q's seem a bit different. When I use the specs for the 2010 Q it suggest a ported enclosure where as the older one always suggested sealed. I am sure the specs are reasonably close but just the same I would like to get the t/s specs for the older fi q 15" d2 model if at all possible. If anybody could help me out it would be greatly appreciated.

Just recieved my FiQ12" need some help on box ideas measurments.. etc.. I drive an 06 Nissan Xterrra. I would like to build a box the slants at an angle "towards" you following the countour of the back seats to.. (larger on the bottom , to smaller on top with the front being straight , facing the back) if that makes sense...Ill post a measurement of the height of the back seat at the angle but if any one is an SUV owner out there you know what i mean... i hope...that makes sense... I am assuming an angle on the back of the box doesnt make a difference.. its the amount of air inside.. I also need some recomendations on terminals for the box.... I am open to alternate id…

can anyone tell me how many watts i should run to a fi bl 18 and wether i should go with a dual 1 or dual 2 ohm.... and also what is the best hifonics amp to run it on?....

Hey guys. I plan on purchasing two 12" Fi BL's. I will be powering them with two NINe.1 amps.....those are my plans. any other suggestions for amps are welcome. But the NINe.1's fit my bugget perfectly. I need suggestions for a box.... Ive been messin around and came up with this box. I will 45 all of the corners and seal her up tight. Should this box pound alright, but still sound dec.?? thanks here's the link http://www.subwoofertools.com/forum/ported...;Fs=27&CE=0

how big of a box should i build for 2-12 btl? It will be powered by 2-40.1, i was thinking 4 cu at 35hz bad idea?

Looking to build new system. Planing on using a Memphis 2500 watt amp to each sub. This system will be mostly for SPL but also some daily listening. Will be using 10" or 12" subs. Just wondering which Fi sub would work best. Will start with 2 subs but move to 3 at a later time and maybe a Memphis Mojo 4kw to each also.