Fi Technical

So to start things off I have a 2000 silverado ext. cab. I am very interested in the FI Q series subs but have a quick question for those of you that are more knowledgeable than I. I would like to keep my back seat and put two subs underneath the seat, now my question is. which would be a better setup for a daily driver? I have approximately .8 cuft available for each sub. would two 12's sealed or two 10's ported be a better option? I understand that .8 cubs fits in both categories but have also heard that the 12's really need somewhere around 1.2-1.3 cuft. I listen to huge varieties of music at all different levels. and am not so much interested in hitting 145 db at one…

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 have two BL tens and I was looking to recone them but I can't figure out if it has a flatwind coil. If it doesn't can I upgrade to it without it being a problem? How can I tell if it has one or not cuz I need it but idk if it'll work with it

I've been E-mailing Scott from Fi Audio back and forth but it usually takes a while for response and i realize hes bussy at the dB Drag World Finals. I desperately need these specifications for my Fi X 12s. LE in Mega Hertz- Z in Ohms- PE in watts- Ive been trying to get this info for weeks now so that i can finally build my box. I would really appreciate it if someone could help. Thanks, Ben

okay so I have posted on here a time or two before when first acquiring my FI audio speakers. I am driving a 2010 Chevy Malibu two fully loaded 12" Fi Q's, built for a sealed enclosure due to the lack of space to slide a box in the trunk. I have a Brutus BRZ 2400 hooked up to them, running them wired down to 1 ohm resistance. I also have a kinetic 2400 battery, nothing done to battery up front or alternator. 0 gauge knukoncepts ran throughout This is my daily driver and i run the system every time im on the road (on highways for 2.5+ hours a day) the RMS rating for these subs is 1500 apiece if i remember correctly, and from what I have heard, added resistance when turnin…

what add ons should i get on a 15" BL if i plan to use it daily powered by a sundown 1500?

Here's my box I made for my new FI BL 15. This will be going into my 2014 Focus ST and will be driven by a Brutus 1200.1d at 1 ohm. Box is 3/4" Oak Plywood and is on the high side of 4.2 cubic feet. It is stained with Minwax Cherry Blossom stain with like 8 coats of poly. Empty Soda can is for size comparison. Has 14" long 6" psp aeroport tuned at 32hz. Turned out a little more Purpley/Burpley than I initially wanted but I said to heck with it and left it Burple. Looks a little more reddish Burple in the sun than in this pic. The shade.........It's growing on me. I did a little shake down run with a old RF Monoblock amp I had running a 18" obsidian. It sou…

I plan on running 8 ssd 10's. 2 per box at 500 watts rms each. Each box will be 3 cubes before displacement tuned to 33hz. I plan on running 1 4" aero port per 2 subs. Do you think I will get port noise with that size port on only 500 watts? Thanks, I hope that wasn't too confusing.

Alright guys, so i have a dual 1 ohm q18, and i need an enclosure, the specs on the website aren't specific enough, i want to know what size sealed enclosure, would be best for sound quality? I am getting my enclosure professionally done by my local car audio place, and he needs the specs that i want it at. also how do you wire the 1 ohm subwoofer, i'm new to this-lol so please get back to me on this asap. thanks -aj

I've done a few builds in the past, but have yet to use your products. I work for a very large cabinet manufacturer in Minnesota and have a high level of skill when it comes to wood fabrication. It's been 5+ years since my last build and I am a bit rusty. Needless to say, I don't trust my calculations and I am hoping someone can look-over these to let me know their thoughts on the dimensions/specs for these particular subs. This build will be for (2) BL-12's each in their own enclosure (with both enclosures attached together @ the ports). Below is my dimensions/specs. If this is in the wrong section of the forum, I apologize. If a moderator can move this to the proper…

i am new in this forum so hi i was wondering if the fi btl's can handle 3700-4000 watts rms, daily?

hey guys heres the deal, i finally got my ported box completed and installed the D2 15" BL, hooked up the amp (aq1200d) to 1 ohm, saw that my fuse is blown so i had to use my friends to see if everything was working.. the amp was showing power, and hooked up a capacitor just to see and it was getting the proper volts, but NO response from the sub, no movement at all. We were soo confussed, everything looked properly installed. just wondering if anyone has any ideas! Please help, i appreciate any given. I miss the bass also how do i properly tune my amp, and where do i put the knob angled at on the subsonic, i need it set about 30 hz which is 2 under the box tuning, but t…

Hey, I've got a MA Audio HK12X2 that is in need of a recone, I burped it once in '04 finals (it was it's first and las burp) it's been sitting since. The recone will need to be for spl Application, 3" VC 3/16-1/4" gap I'd appreciate any info. Thanks

Rather then stay up until 3 in the morning for firechat due to time differences i though id ask here... Need a sub for my HT. Currently I have two BL's in my car. I want something that that plays lower with more depth then the BL's. I love low lows with presence. IB is not a option in my current place. What is my options and what options should I select? is there something else I should specify? Sealed ported whatever I can build the box and consider my self a bass-head intermediate but this whole HT thing has me baffled. I know Scott has his finger in other sub companies as well, which makes me think why Fi and not any of the other companies he has a part in? I ne…

Ok guys i wanna get 2 Q series 12" subs my only problem is i dont what dimensions to use for a ported box and lso a sealed box. If any of you know please share im trying to either et cut out sheets for them or get the dimesions needed thank you. I was told to ask JBLCamry but i cant find him thanks ahead of time.

I currenty have thhe two subs in a 4th order blowthrough off of a 4500d on 16 volts. Gains were set around 1/2 way and it pounded for bout 4 days. Then I decided to turn it up a little. Between 1/2 and 3/4. Now the subs don't seem near as loud to me..could it be I'm just gettinng used to them? I'm gonna check with the dmm tomorrow and read the coils and see how many watts the amp is putting out...I hope I didn't mess anything up:(

Hey y'all I was look at the sp4 15s n I want to do a trunk wall with 2 of them I have a 2006 Impala I wanted to know if I have a enough airspace

does anybody have any Winisd driver files for any of the Fi subs? If so I would like to get my hands on em. Mine dont seem to be accurate and I would like to see how you guys did yours.

just got my bl in and i was just wondering if there were anyway you could tell if they built it with cooling, hyperpole etc. thanks

Finally got my hands back on some straight street jam material. AKA: Qs and a BTL UFO I've seen some UFO BTLs have a spacer in between basket and the motor. Is this just an adapter for basket patterns or is it a beneficial option to the sub? Excited for my new Fi experience and so is the wife =]

Hey guys I got a 93 Grand Caravan and two Fi Q 18's With BP packages commin hopefully next week Im finalizing some ideas on a box and wanted some input. It gonna be subs firing up port along bottom out back. Im aiming for S.Q.L, i figure it will be loud regardless I'm not trying to put up huge numbers i want it to be very deep and clear thats all So im thinking Height = 26.5" Width = 47" Depth = 39" All in 3/4"MDF / im doubling the top sheet where the woofers are going. According to the RE Box calculator which i dont know how accurate it is it tells me Internal Displacement = 16.068 CuFt Before Sub (0.24CuFt x 2),minor Bracing( maybe .4CuFt) and After Port Displacement.…

I have been looking alot into the FI Subs and finally going to decide to buy my first FI Sub. I decided to go with the SP4 15. My first question is I need help with ideas/suggestions of my box. Now here's what I'm dealing with: 04 Cavalier Trunk Build sealed w/ sub and port forward. 2 XS D3100 in rear Taramps HD 6500 (Will keep gain down, want to do roughly 4k Watts to sub or suggestion?) Stock Alt (Don't plan to upgrade) Daily Driver, not SPL or competeting, just Pleasure to be LOUD I play All types of music from Decaf Slowed to Christian to Rock. I want to play to the mid 20s and up to the mid 50s decent, but of course tuning area gets best, but still some output 4…

I was plan of buying 4 Fi BL series 15's. I needed to know how much RMS wattage could the speakers really take. I am going with the flatwind voicecoil, with the cooling option, and the daily driver. I already have an amp in mind that puts out 4kw. If the speakers can take a little more I will looking into maybe a 5kw amp. I do plan to use a bass processor in line with the amp. I am open to any suggestions.

I am about to build a box for my incoming BTLs. I reviewed the cut out sheet for 1 BTL that is provided on the forum but was unsure as how a box for 2 BTLs is supposed to look like. I am unfamiliar with how the different dimensions in a ported box affect the performance of the sub so I would appreciate some input. 2-BTL 12 4.9 cubic feet @ 32Hz

with 2K RMS should i go with a BL or a BTL ??? i hear most people run their BTL at like 4k rms or 3k rms and i would rather run a BTL if it wont be vastly underpowered....i was reading on the forum and i think it was tejcurrent who ran 2 18" BTL's off of 2 hifonics 2K RMS amps and hit right below 151. so if i ran 2k to a Bl would it get just as loud as 2k on a BTL ?