Fi Products

Whats a good amp to power 2 N215's? around 4000 watts rms?

Im looking to get a single Q 12 and i was wondering if i should go with the d1 or 2 ohm? Also whats a great amp for it, thanks!

Any help would be appreciated. Looking to wall 2 SP4 18's with a DC 7.5k in a Chrysler 300. I want it to hit mid 20hz. I am trying to see if anyone has any experience with these subs and how they react in certain box dimensions real world experience. I havean idea of what to do but not confident enough.

Im planing on building a box for 2 sp4 15s. Is it better to separate the chambers or just have one big one. And also the box im looking at building is around 8 cu ft or 4 if separate.

I know very little about fi audio, pretty much been a JL user. I want to switch to fi because I want to support a local company. I have about 800-1k budget for sub and amp for this build. I want a single woofer and don't care if its a 10 or 12. The sub will be mounted in acustom sealed fiberglass box. I listen to rock mostly. I like my bass to be punchy. I dont want the bass to drown out my comps. As for my set up I have rainbow germs. And a 2 chan sundown amp. Its all going in my evo x.

im getting an amp for my n2 btl 15's. ill have 2 of them fully loaded and was wondering if the crescendo audio BC5500D would be too much for these subs. any help is great thanks?

Hey guys I currently own two Polk Audio SR 124 DVC subs powered by two C500.1 Polk amplifiers (500 rms amps), in a sealed enclosure. I want to switch because I have had problems with the subs, and although they used to sound great, they're not working properly anymore (tinsel lead failure with 1 and now a weird sound coming from the other). I heard my friends SSD and so now here I am. Will my two c500.1 amps (benchmark tested at ~555 rms each) be enough to power this beast properly? ~1100 watts rms? And if so, do I need the cooling option? I know I want the Internal heat ring option. Will the sub work fine with two separate amps powering it instead of just one? Anythin…

I'm looking to get 2 Fi Bl 15's in a vented box. i have had trouble finding a rms rating for them. in multiple places i have heard its 1000 but im not sure. i was going to use 3200w Hifonics colossus, at 2 ohms bridged to power the 2, but now im not shure. if this is overpowered could anyone point me in the direction of a good amp that will give full power to my 2 15's at 2 ohms. on the site under "many other custom options," it says that the rms rating is 1500* watts, this is what makes me unsure. (but now that im looking at it again, i might be reading the site wrong) and if that isnt right, than under the options it says 3-5 cuft, for a ported box. would i be able to g…

Shawn, was wondering if i could purchase 2 rubber trim rings for a set of 12 inch BL's i had re-coned?

Just wanted to say thank you to Shawn and Scott for making a great product and sourcing materials and labor in the U.S.A. On to the speaker porn: Who doesn't like a picture of 4 boxes next to each other...touching. and one next to a 12" AA Arsenal Best Regards, Chris

i ordered an 18fi bl with dual 2 ohm coils, flatwind coil and cooling options on 1/20/2013. as of right now my order status says "awaiting payment" because i believe i accidentally put my name in the billing details rather than my dad's (his credit card). i emailed fi about 36hrs ago with no response. i bought a hifonics brutus brz2400 for my amp and have realized that, wired at 1ohm, this would be too strong for the sub. considering my order isn't even processed yet, should i reorder it with 1 ohm coils and wire it at 2ohms to the amp for 1700watts? or is there a way i could keep the dual 2 ohm and use it with the brz2400? or keep the 2 ohm and get a brz1700? my main c…

I want to recone an Fi btl ufo style magnet, so which magnet style do I choose on the site forr this? There is new single, old double, and old triple. The ufo features a singles wide slug. Which do I choose for this motor? And how do I know if its universal to impedance?

I was looking into buying a Q12 but im a complete noob when it comes to car audio so i have no clue what the extra features mean and what i should get. Atm i use a crunch 1100.2 to power my x2 power bass 12's for a total of 700 RMS and i want to upgrade. Mainly listen to hardcore and dubstep as i was reading other post and some say that a different model wouldnt better suit me but im not sure. If anyone can help me id gladly appreciate it. **** Just found the thread about options but still would like opinion on preferably what to get. Whether it be different model etc. **** Read the technical details but it doesnt explain the option for internal lead. If someone could exp…

Looking to upgrade from my BL, will a M3a on 0.5 ohm be enough for a SP4? Do you guys think a ZCON will be a better candidate? My box is 4.4 cubes 36hz

Hey everyone/Fi Staff. I just took a look at the current version of the Q model sub in comparison to the one I bought 3 years ago and man do I see some changes. I still have my first Q and am in love with it, but I wanted to know what changes have been made from the first version. First thing I noticed is that Fi has been feeding their subs mass gainers. My 12" Q was 30 pounds when I bought it, and now it's 42 pounds. I'm assuming the magnet is now able to handle more power along with other things. Also, is the cone design exactly the same between the first and second generation Q? The reason I'm asking is because in case I ever need to buy a recone, I'll know that I'll b…

Do fi ever answer their emails? I never got my refund on a double order. No updates on my sub.

Hey there forum, I purchased 2 Fi X10s last year after Christmas and threw them in a prefab box for my Silverado. They sounded great! I recently got rid of my silverado but kept all of my system equipment and now I drive a Chevy Traverse. I was wanting to build 2 different boxes for the back: one for spl and the other for sound quality. I was looking into building a band pass box and found a great box dimmensions calculator but it requires information about the speaker. I scoured the website looking for it but could not find any details. I was wondering if anyone had that information on paper or could direct me to a link to it. It would be greatly appreciated! …

I know it takes awhile for the subs to be built and them to be shipped but i ordered my sub on the 12 of September and its oct 1st, im just trying to get a little info on the progress of the sub and how its coming along. Its so hard to wait for these amazing subs, and if anybody know a good site to help build boxes that would be very helpful too. Thanks

does any one have experience with the btl n2 and aq hdc3? i have a hdc3 12 right now on 2k in a slot port box tuned to 35 hz, i recently ordered a btl n2 fully loaded and a slot port box tuned to 32 hz do you think the btl will out perform the aq?

Picked it up 2 days ago and its my first "big boy" sub, can't wait to hear it.

I just got 2 of my BL 12's reconed and was wondering how long do i play them normal before i give them the business? Basically the cone is stiff again so more break in time needed?

I just purchased a second Rockford Fosgate 2500-1bdcp and plan on strapping both amps together. Do you guys think i can safely play my 2 fully loaded BL 12's with this setup? I know both amps strapped will be around 6,000 watts or more.

Which of the 2 subs you think plays the lowest???

I am getting ready to step up my game and move up to 4 18"s for this spring. Would like some info before i start ripping out my current set up. I currently have 2 18" dual 2 ufo style btls from 09' , I would like to know what current model is close if not identical to my subs? Any info would be helpfull thanks.

I ordered two SSD10 woofers back before xmas. I have them installed in a vented enclosure, and have now had a chance to listen to them daily for a couple of months. I just have to say that I have never been happier with any drivers I have owned. I have yet to find any music that gives these Fi's any problems. They do everything I've ever asked. Rap, Rock, Electronic, Country, Bass CD's... Everything I've played through them sounds great. They are loud, play low, are tight yet still boom when needed. Never do they distort, pop, overheat, or anything like that. I've used everything under the sun over the last 17 years, and by far these are my favorite subs I've owned. I was…