Fi Technical

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…

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

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 =]

Like the title says, i was wondering whether the terminals on the FI subs can fit 8g wire or if ill need to go with 12

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…

Mainly for the bigger heavier 18 inchers but not excluding other sizes.I'm curious to see what you use.Bolts,screws,clamps etc.Do you switch from screws to bolts at certain weights and so on.

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

so i hear ia is coming out with a 21" subwoofer. should i expect fi to come out with just as big or bigger in the near future? Damon

What are some optimal dimensions for a box for a Fi BL 15. I really want "SQL". Need to know how many drivers port area port length tuning frequency. (W x H x D) Thanks for the help.

I got a 93 740il, i want to mount the subs on the rear deck and do a blow threw... dimensions of the trunk are - width 3', height 1.5', and there is a difference of 6.5" from top depth to bottom depth being the top is less, the port thru the rear seat can be a max height of 1.5' and is set at 1.1' without cutting any leather seat and width of 10", i have allot of room to play with the depth in the trunk well over 3' in the least deep spot, i tried using re's box calculator but it didn't help that much. thanks.

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.

My enclosure specs are 36 wide 18 tall and 30 deep. According to the12volt.com this should be a lil over 9ft³. I want a 33 Hz tuned port I'm still undicided between 4 by 16.5inch port with a 11 inch length or 5 by 16.5 inch with 14 inch length. I'm more in question about the lengths. Are they accurate?

Hey guys Im going to build a new box for my 18" Q. I have 6.7cu. ft. before disp. and port.. which I know is small, which is why I need to use aero's. Right now I have 4x 4"x10" aero ports. can someone give me recommendations. Do I need to get 6" ports?? I know for port area that 2 of these 4" aero's isnt enough, but I think if I go to 3, mine are to short... Can I use the flares, and use PVC pipe to make them longer??

hey all, i am looking to build a 4th order wall setup in my 88 suburban with 4 BTL UFO pie slug 18s, they will have xmax coils and rig is dedicated SPL/demo. i would really love to find out what sealed size i need to base my wall off. since i want the bandwidth i am thinking 2:1 ratio. i have a calculated 100cf3 to work with so space is a plenty.. (50.25w x38t x91l) subs will be inverted (motor showing) all on the back wall, loading wall port will be drivers side. untill i find a sealed cf size per sub i really cant do a thing... ready to start buying lumber and resin

Hey guys new to this forum and just looking for some info. I have a BL 15 on a SQ2200 sealed off in my car. The res fq of my car is 37hz and im looking to increase my spl #'s. What is the recommend port area and port area per foot? I was thinking about using 3 4" PVC ports. Does anybody recommend something else?

I'm looking at buying 2 15" Q's with the bp option and just using it for daily driving no competitions. I wasn't sure if it is worth paying more money for the SAZ-3000D or if the AQ2200D is just as good of a fit for my application. I have been through a lot of bad amps and want to go with a good quality and very reliable amp that I won't be afraid it will break after a year of use. I don't know if anyone has or heard a setup like this with either amp but any input would be greatly appreciated.

I am in the process of building a box and am thinking of using polyfill. I just wanted to know if polyfill works the same with ported enclosures or is it purely for sealed boxes only?

So... I was on my way home listening to my Q and it suddenly stopped working. I parked and left it on and felt the sub while it was playing. When I pushed in just a tad, I felt it move a little. But when I let off...nothing. I took the sub out and found that the black plastic piece that holds the push terminals in came un glued. Im assuming that's the problem... I tried to get a reading with my DMM, but I think its a piece of junk. It just read 1. My gain is at about half. Amp is a planet audio rxd1000d which im selling soon. 2.5ft^3 box at 32hz. Don't think all that matters though considering I just need to know how to fix it right? Anyways...thanks in advance. Jonathan.…

Ok so i have had my Fi BTL for a cppl months now and i was bumping it today and the Dustcap flew off. Does my warranty cover repairs on that? if so how do i go about getting it fixed?

Hi i have a btl 15 im wondering on what amp to use my friend says a soundstream tarantula amp i was thinking a hifonics HFi amp. Im looking for most power and clear sounding bass from the amp

Ok i have two d1 q 15 w/bp power and when I first recieved the subs, they hit extremely hard but after a couple of weeks and a local comp, the subs just dont perform like they used to. when they hit the lows now the bass kind of fades away and sounds like a fart and they dont even put out the pressure like they used to either. I've checked the box first to make sure there were no leaks and everything is fine. I think the spiders have gotten weak cause they just dont "thunder" anymore. Time for recones right?