Fi Technical

Hi all! I have a 2004 Dodge Ram Quad cab. These things are impossible for trying to put in subs without pulling out seats and all kinds of stuff (not interested in). Found a guy who makes a specific "molded" box that goes underneath the rear seats. I really want to go with the Fi Q 12", heard really good things about the Q's and I prefer 12's over 10's for the notes they hit. However, this box has a single chamber totalling 1.8ft^3 in a sealed setup for a 12". Will the .9 - displacement per sub be enough to adequately run? How much polyfil should I use? He also makes a 10" vented @ 36hz and 10" sealed. The airspace would be the same as the above box. Would it rea…

Why is the recommended tuning frequency for the Q 18 so low?

Car: 95' Lexus SC400. Driver: 1 or 2 Q's. 12s? Here's the deal, I'd love to do 2 12" Q's in about 2.8 cubes sealed or so. If I can make it fit. OR, I can do 1 12" Q and port it, but at what cost to SQ if the box is built properly? 1 Ported would yield a slightly smaller box if space is as much of an issue as it could potentially be once I tear out the false wall. The problem lies in that there is a Factory 10 and 2 4" in the rear deck, I think. 10 for sure, not 100% on the size of the mids there. The rear wall is steel with the gas tank there as well. Again, I have not had time to tear this out but I know there is at least some room in there because I've seen pic a…

i have a box i was using for some other woofers in that i put to use in my trunk. here are the measurements 35x16x16 with divider and two four inch ports 8" long each i kinda wanna stay with this box for now because it fits perfectly. the problem is tuning what is this box tuned to and what should i change with the ports? the wood is 3/4 mdf. any suggestions? thanks oh yeah in case you didnt know 2 fi ssd12's copper option in the box.

ok so my brother wants to get a fully loaded 18" BL for his 00' blazer. hes got a stock alternator i think 105 amps, and hes thinking of getting a hc1800 battery in the back with a hifonics xxv or xx thor amp. will his electrical be okay for this?

OK so i have a hifonics 1606 powering one 12 Q and i have the gain turned all the way down and the multi meter is reading 36.6 volts and if i turn the gain up to about half way it reads like 55 v. i am confused and my headunit is only 2 v preouts what is goin on, is there anywone that lives in so cal that can help me set my gains and check my setup because i am either just plain stupid or something is wrong.

I have the following system... '96 Jeep Grand Cherokee 2 18" Fi BLs 2 Rockford Fosgate T10001's 1 Rockford Fosgate p500-2 1 Pair Infinity Kappa Perfect 6.5" components 1 Pair Alpine Type R Coaxial 6.5" Lots of Lightning Audio Wire Alpine CDA-7897 Head Unit + 6 Disk Changer 225 amp Excessive Amperage alternator Box tuned to about 34 hz My question is, I cannot for the life of me get my subs to play the same. They are phase, wired with 8 gauge, and the polarity is correct (as long as the subs are labeled correctly). I have the amps set for master/slave, set to give each sub 1400 watts. Does anyone know what could be causing this problem?

i bought a mt motor a few weeks ago and ups damaged it....the pole has shifted to one side........can you fix this? or is it a 53 pound paper weight?

I've seen that Fi is using woven leads at least on some products, is the Q on of these? Also is this change going to make it over to the AA Havoc any time soon?

Hey, I have 2 tc 3hp motors. I know they need to be sent in to be machined to fit the 12 spoke mounting holes. I saw where you posted prices for a 3hp recone, there were prices for a 12/15/18. Can you do a 3hp 10" recone?? The motor measures 7.5 inches wide at the widest point. I'm hoping there won't be a problem with 10's. I'd like to send them this week, but waiting to see what can be done. Thanks FI.

Is it ok to feed a single BTL 12" with 3000wrms daily? any issues you think I may encounter? thanks!

Hopefully someone can help. I found a 3hp motor, but it only has the 4 bolt layout where the basket secures. I've seen a few of these motors rebuilt w/ fi softparts so i know it can be done. My question is what cone assembly, or coils and spiders should I get (assuming I use FI) to make it perform similar to an eclipse TI? Also, what basket should I use, or is there one that I can use with a four bolt pattern? I need some guidance and am a little knew to this so bare with me please, and maybe a price range so I know what I'm getting into. Thanks for the help. Also, when do the new woven tinsels come into production, and will all products be switched to this? It's …

Hey everyone, So i recently sold my 2 audiobahn 12'' sub woofers, and my amplifier. I have the money now to buy my 15''BTL fully loaded. I had a few questions that i am still not sure about. 1.What should my "ohms" be if im using a mono amplifier. 2.If my box is tuned to 3.25feet at 30HZ is that too little feet, and too low HZ? 3. Does anyone know a good mono amp to go with 1 fi BTL 15inch 4. Also is a BTL legit 2000RMS? i really aprciate all help, thanks everyone.

Ok, so I'm wondering if the Q is the right choice for me now. Roughly how much power will a fully loaded Q handle? I plan on running the 1500D at 1 ohm, so I suppose around 1600W. Thanks, Trevor

I have been looking at getting a fi bl 15 for my 2002 nissan sentra and was wondering if i could fit the box needed for this sub in my trunk? Also what options should i get i want the real low deep kinda bass? and what amp would be best for my budget i would like to stay under 500 for the amp and im not sure which would be best for me and where i dont have to do the big 3 any ideas or help would be great thanks

Did you guys start using different tinsels now on the btl?

im looking for a ported box for the trunk of a 95 caddy, 14"H 14"D 38"W is the max for the box. it's for a 12" ssd how long/big should i make the port to tune it around 33Hz's it also going to be powered by an alpine 650 watt amp.

I was just wondering if anyone knew of any good car audio shops in Ohio (Columbus would be best) that have worked with Fi audio before and could do a custom wall for 2 12" BTLs and probably 2 TD20001 r/f amps. I like competing in meca's car shows (SPL) and i don't think i should do the box like originally was going to. Thanks

I want to get a btl 12" dual 2 for my gp3000d pro amp. I just don't know if it is recommended to get the 3rd magnet and HiXMcoil options. please help asap. thanks!

I really need an RA# for my bad sub. I have called and sent numorus emails but have received no return contact. I have been emailing and calling from December and even tried to find you at CES. Please someone contact me so I can repair my sub. I have all receipts and have all the emails dated to show I tried to contact you before my waranty expired. Thanks, Mel.

I'm lookin to run a pair of Q 10s eventually but I'm just wondering if anyone has experience using them in a smallish sized ported enclosure? .7 cubic feet to be exact, 10 sq inches of ported, tuned to 30hz...per driver of course. Thanks in advance.

What is the lowest amount of watts to feed a 12" Fi Q and still get decent/good performance? I'm shopping for an amp and want to see what my options are.

Hey i just wanted to know what would be a good enclosure for SPL with 2 12" BTLs.... I Drive a 2003 Tiburon GT and do wanna be able to listen to music occasionally. Thanks for the help

I was wondering if 140in of port is to small for 2 of the Bl 18's? When I build my box the port would be 20h x 7w x 12d that would be 32hz. The box would be 40h x53w x14d. Should they be tuned lower or higher? Thanx Jason

How loud will his be, haha. No but seriously - I was considering purchasing the 6000D because i can get one for only $100 more than the 4000D. I was going to use the 4000D for these 3 10s but hey, why not go with this one, you know? I am not going to deliver that much power to these subs, that is the point to this topic because i will not have the battery power to support the 6000ds potential. The question pertains to the BL's cooling option- Fi says as long as you do not burp the subs then the cooling option is fine for daily. I am planning on setting the amp up to output a real 4,500w(peak spikes) as if i were to have no voltage loss. Sometimes i show off setups usi…