Fi Technical

Hey guys, Finally ordered my Q, 15" w Cooling+Spider... so pumped! but now I have a dilemma I have ported box that is built to the specs of 3ft. cubed @33hz, but wanted to know if I will hear any audible difference by going to a 3.5cube @33hz? Is it worth it for the Q? Goals are just to have the loudest setup given my amp (1500d sundown), sub, and trunk space Just wanna know what, if anything, i would be missing out by keeping the box at 3 cubes thanks

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…

Reconing my 15's to 18's. Plan on using 6 spoke 18" baskets, linear roll spiders, not set on cones and possibly a coil with a slightly bigger WW. Any possible issues I might see? Suggestions comments?

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.…

Does Fi offer a recone kit that would fit on a MA Audio 1800XL? If not, who would? The recone kit would have to include a new basket.

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 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.

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??

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

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

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?

So I'll be running my SSA Zcon 12" on 3k for now until I get around to purchasing a recone for an sp4 motor I got in a trade. My problem is..I have a trunk car and limitations on box sizes. Depth and height are a problem for me. I have come to the conclusion that the biggest I can fit is an L port enclosure about 3.9-4 cubes. If I give it about 4 inches of port and still have net, will this enclosure server well to the sp4? I'll be running 3k @ the sp4. If not recommend what you all have experimented with.

Hi guys, got a Q15" with flat wind coil and extra spider. Now need to built a box for the same. Can only make a ported box with internal volume as maximum of 3.7 cufeet.. It will be a rectangula ported box with no bracing inside.. using 3/4" MDF Box external dim - 11.25 X 36.5 X 19" - internal volume come to be 3.7 cu feet. i still have too account sub volume displacement, port displacement and is there something left to account in? now come my queries - What is the mounting depth of Fi Q 15" ? What is the cut hole Dia for 15" Q ? How much diameter using round port will be needed - minimum and maximum ? How much more power handling the sub gets with flat wind coil …

SSD 10 @ .66 sealed (Recommended Sealed box: .6-1 cuft) SSD 10 @ 1.10 ported (Recommended Ported box: .9-1.5 cuft @ 33Hz) SSD 12 @ .88 sealed (Recommended Sealed box: .6-1 cuft) SSD 12 @ 1.56 ported (Recommended Ported box: 1.8-2.5 cuft @ 33Hz) SSD 15 @ 3.75 ported (Recommended Ported box: 3-4 cuft @ 33Hz) Q 10 @ .66 sealed (Recommended Sealed box: .2-.6 cuft) Q 10 @ 1.10 ported (Recommended Ported box: .5-1.2 cuft @ 28-33Hz) Q 12 @ .88 sealed (Recommended Sealed box: .8-1.5 cuft) Q 12 @ 1.56 ported (Recommended Ported box: 1.8-2.5 cuft @ 28-33Hz) Q 15 @ 3.75 ported (Recommended Ported box: 2.8-4 cuft @ 28-33Hz) The sub will be getting RMS, and the sub will be going in …

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.

I'm looking to redo my wall for my BTL 18s. I'm currently using a Cactus 5kw, running it at .7. My electrical consists of a 200amp alt, XS d3400 under the hood and a d3100 in the trunk. I'll be adding a second d3100 during the rebuild of the wall. How big would you guys go for the amount of power I'm using? My current wall is 14 cubes (after displacement), 35hz tune, with 192" of port. The design was bad, hence why I'm redoing it. It's only doing a 151.5 at the headrest with the passenger door wide open. The way I have the port and subs I'm having some phase issues and I think I can get much louder then I am. This is just for daily driving with some competing on the side…

Brand new fi ssd wired to 4 ohm on a apsm 1500 mini for break in all set with smd dd-1 had hooked up for 1 day and it broke neck joint smoked coil former has hole and just overall dunno why it would have happened that way with low power, song played was off decaf zip 31 track was first in list, running in a 03 2500 ram diesel has 145amp alt dual big batteries under hood running 4ga power n ground into amp and 8ga raptor wire to sub. Ne ideas? Edit : spiders broke from former along with falling apart also.

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

Might be a dumb question but whatever I'm very new in box design and I did search but it wasn't easy describing this in a search. I have a box now THE's set up for 1 12" FI BTL tuned to 32hz mounted in my tunk facing the rear of my trunk. Box cu ft now with 1 sub counting displacment and vent is 3.75. I was thinking of installing a second one on the oppisite side of the box firing inside the cabin.... My question is: Will the sub work correctly and sound good this way? With a second sub including displacemnt the cu ft. would by 3.57 so according to specs thats slightly above the low end size for 2 FI BTL's correct? Any suggestions I would appreciate that help thanks gu…

Hello guys I am looking for stories or possibly someone with some experienced advice that may have used q 18's in a 2003 explorer . first of all I have a 2003 explorer with a 4.6 v8 ,220 amp alternator 2 runs of 1/0 kicker power wire, 4 stinger spv44 batteries. cda9887 alpine receiver ('audio control matrix' voltage booster in the near future) to a jl slash 300/4 powering focal 165v2s's front and rear , a audioque 2200d to power 2 fi q 18's w/bp power dual 1's , a audioque 1200d powering a digital designs 9515, as well as a digital designs 1510t will be ran in the center console , I don't have the amplifier for that yet and yes there will much more than likely be m…

Would be grateful for any help. I just got my 18 btl in the mail and would like to start to build a box. I have built alot of sealed boxes but haven't built a ported box. I drive a 98 tahoe so size is not a problem. It will be used in a daily setup would like to tune that way but get loud thanks for any help

I placed an order for 1 FI BL 15 dual 1 instead or 2 am i ok

I just designed my box and came and up with 12.37 sq inches of port per cube is that a little low? What does more sq inches of port per cube do? I also came up with about 4.03 cubes per sub before displacment I want to do a little larger what does everyone I think? My dimensions I used are 23width x 34height x 49 length. they will be in an 05 f150 with two kicker zx1500. 1 amps powering them for now will upgrade power. I know they give generall recomendations of 3-5 cubes per sub and 12-16 sq inches of port per cube. What is everyone else running? and what should I tune to? I did 27 hz my amps lowest is 25 hz and the way I understood what fi said was 2 above your amps lo…

Im running a single sundown 1500saz for now, but might get a second in the future. My vehicle is an ex. cab S10 that I can fit roughly 7-7.5 cube ported box in. Im wanting the most SPL out of my setup and I am comparing 2 15" SSD's against a single 18" BTL. I know my 1 amp wont push the BTL to its limits, but it should do very well with the SSD's. My question is will I get the loudest results running the Sundown at 0.5 ohm (18-1900 watts) with 2 15" SSD's or a single BTL 18?? thanks in advance! Cody

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