Fi Technical

so as i was driving around with my friend, my sub woofer started hitting the bass really weird...shortly after a burning smell came...almost like a grinder, then no more bass! well ive had my sub since jan, hooked up to a DSC2000.1d, wired @ 2ohms, 56.1v on the multimeter, 2.5cf ported box...every thing was done right! why would this happen? should i contact Fi about getting this repaired?

hi all. i have a bl 12 at dual 2 hooked up to a kicker 1500zx mono amp. its all hooked up correctly yet when i turn my car on the amp goes straight to protection. any thoughts on why it might be doing this? the only two problems i can think of is that my inline is a few volts low of the requierments, or the fact that i have 4 gauge wire and might need 0 gauge? the volts from the battery are only short by about .5 volts. any input or advice would be well appreciated!!!

specs on 09 fi ssd 18

Ok i need some help on picking out the amp for my Fi BTL fully loaded i have to amp choices tell me wich one you think is better or if neither of them ar good Amp 1. XT4000DE V2 1,500 watt RMS (4000w peak) mono car amplifier Class "D" fully digital power supply 4000 watts peak output 1,500w x 1 RMS @ 1 ohms 800w x 1 RMS @ 2 ohms 500w x 1 RMS @ 4 ohms Bridgeable Efficiency: 86 % @ 4 Ohms or 84 % @ 2 Ohms or 76 % @ 1 ohm Fully adjustable butterworth low pass crossover filter Low Pass Crossover Filter - Adjustable 40 - 250 HZ @ 24 dB per octave Adjustable Bass Equalizer: 30 dB Bass Boost @ 45 HZ Subsonic Filter: 15-…

I ordered 1 18" Fi SSD. I plan on getting another one soon. And was wondering what kind of amp I should get? I went ahead an got the dual 2 ohm voice coils on the amp. I'm looking for something cheap. Possibly well under $200? Currently I have a MA audio 18" 1100 watt amp with a legacy audio 2000 watt amp and it hits hard but it doesn't have near the quality I'm looking for. With the new SSD I'm looking to run either a 1ohm or 2 ohm config. Not sure yet what to do. Any ideas? I'm also wanting to run the SSD at atleast 650wrms 800 would be perfect.

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.

Im building an enclosure for a Bl 12 I would like to tune it to tune it to 32 Hrz only Im not sure how to get the results Im looking for the specs for the enclosure im building is 16" deep 53"wide 8" tall on the back side and 9.5" tall on the front side I plan to fire it up I will be running it 1 ohm with a T1000 fosgate amp can sombody tell me what size port and length to use round or slot pot ? total air space is 2.79cuft with 0.18 deducted for sub displacement its 2.61cuft

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!

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?

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…

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

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

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

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

Ok well I am going to be buying a 15 BL here soon and I just found out that the entrance of my trunk is 15" maybe 15.5" so there's no real way to have it facing back how should I set up the box since I can't do it this way? dimensions of trunk are H15" W32" D30"

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

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

I got a 15"BL D2 w/ p chamber option running off a RF P1000-1BD (1382 rms@1ohm) in a Pound That Sound ported enclousre (3.0cf3 tuned @35hz) and i would say this is the best sounding/loudest sub i have EVER!!! gotten,, it still sounds amazing after pounding it very hard for a year now but i think its time for an upgrade... I was thinking about finially getting a 15"BTL D2 running off a RF T1500-1BD (about 1800 or more rms@1ohm) any suggestions on wht to get before i ordeer the sub.. I have a 05' Kia Spectra(yes its a small car lol),, i was thinkin about gettin a yellow top battery and a digital volt meter (but dnt knw where to get it from).. the sub is going to be facing t…

Hello everyone I'm new to this and need help.Ok I have a 2000 Buick Lesabre I'm gonna purchase 2 fi bl 15's and use a sundown saz-3500d amp.The question i have is should I get a dual 1 or dual 2? Also what kind of box and components should i get?Any suggestions would greatly be appreciated.

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 …

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…

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!