Fi Technical

so what would the difference be if u had 1 fi 18btl fully loaded daily running 4000watts rms or if you had 2 18bl's loaded running 4000watts i would imagine that the 2 bl's would be louder cause more air movement? i dunno i just got done reading the efficency post that was like 8 pages about 500watts to the btl or for that matter what db increases would you be looking at it you ran the btl18 at 2000watts rms vs 4000watts rms what are the sound characteristics between the btl and the bl ? if the recommended box size is 5-10 cubic feet does that mean that the 10 cu ft will hit lower take less power to get louder but can blow easier? and what would the difference be between …

I am in need of two 15" recones and baskets with screws for my RE SX's at the moment, I will need two more at a later date. I need dual 1's with some slightly bigger tinsel leads, not the spl ones from the btls, if that is posible. I need the total price for all of that shipped to 47987. Thanks; Andrew

my buddy has a 18 btl the old style 3 mag. we took it out one day and the tinsel has been slaping on the spider and put holes in them. the box its in is 4.5 cuft and tuned to 32hz with 1800watt on it. i glued some t-shirt on the spiders hoping it will help my main question is does the recone come like the new style with the tinsel under the spiders?

I have two MA XL15s that I want to recone. how do I go about doing that. Must I ship the subs to FI? here is a picture of the sub in case people don't remember them

Im in the process of designing a box for one Fi Q 15 and I have a couple quick questions. If went over the 12-16 square inches of vent area per cubic foot of volume would this affect the sound Quality? I was just curious because I have seen a few enclosures that definatly go over this and sound amazing. I am going for more sound quality vs. SPL but want to get the most out of my subs. Also I am planning on tuning the box to 32 hz, that was the recomended optimal freq. for the 12" Q but does this also apply to the 15" Q? Any help would be really appreciated. Thanks in advance, Zach

Besides the voice coil, what are the differences between MT and BTL softparts?

Hello, first of all please excuse my english, I am from Romania. I just received a fi Q 15 ( no options ) and I am trying to calculate my speaker enclosure. I want to go for sealed enclosure because I don't have much space in the trunk ( BMM e46 sedan ). Recommendations for fi q box is 2-2.6 cu ft. With my calculations I am about 2.5 but I want to be sure I calculate it right before I give the blueprints to the box builder This is my result, I am happy because it fits inside the trunk perfectly. I made a dummy box to see how it will fit inside the car. Wood is 1 inch thick.

i need 2 mt recone kits for my 15's i will also need the glue and i would like to have them dual 2 ohm plus i would like to have the fi dust cone can any one help me out with this i need to order these asap no response on web site

I ordered my BTL's on July 28th and i got an email saying they accepted my pay pal and i got an invoice number. After that i got no tracking number or shipping confirmation. I waited about a week and decided to email them and i havent recieved any response... I tried "[email protected]" "[email protected]" "[email protected]" and "[email protected]" Any ideas on how to reach them?

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 hope this is posted in right place.... Two questions: 1.) What is the RMS and peak wattage for a single 12" BL with the dual2, flatwind, daily and pchamfer options? The reason I am asking is because I seen on Fi 's site that it says 1000w/rms, but everyone is highly reccomending the sundown 1500d (which i am about to get.) So, why is that so if it is only rated for 1000watts? Does adding those options bring it up? I had a new custom box built by Sound Advice here in florida and the guy who was instlling it says to me that I will not notice too much of a difference in swithcing from a RF Punch 1000w/rms amp to a 1500 watt/rms amp ( in this case to the sundown 1500d)…

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?

Just trying to see if I can get this sub re-coned again because I cant order the re-cone from the site since its a 12 with the 4 inch coil. Hopefully someone from FI responds.

Hey I own a 03 Tiburon GT and am planing on putting in 2 12" BLTs with 2 SAZ-3000ds. I want to compete in SPL but also want to be able to listen to music (not as important). What type of box should i get ported or seal and should I get a wall or will it just be a waste of wood. I don't want to do a wall unless it will boost me db. Thanks for the help, I don't have a clue what to do.

Hey guys, I was running down some information to do a build for a buddy this weekend. He's looking to do a modest setup with 4-500 watts of power to the sub stage and would like to go with a pair of 10's. I showed him the 10" X's which he was very interested in after listening to my Q's he's quite impressed with Fi. One thing I noticed both here on the forum and on the website is that there's no Tech specs for that line. It's easy enough to post up here or send an email asking about the optimum tuning, enclosure size, etc. which we'd like to know, but I figured I'd just go ahead and ask when you might be expecting to have something up on that information? Also, I thi…

Hey everyone Just a really simple question. The enclosure measurements for Fi speakers, are they measured before woofer displacement? Just need to clarify so I can build an optimal box with maximum air space.Thanks again!

This is to FI, What are my options on reconing a TC 3hp motor to a 18"??? I need it reconed to a dvc 4 ohm. What parts will fit?? Could you pm me a cost of the recone if I send it in thanks, Joe

Got 2-12" BTLs the old versions. Im trying to make up my mind on what to power them with between a AT-5000.1D or the AT-7000.1D. Its only going to be a daily blowthrough in a '97 Thunderbird. Which do u think I aught to go with? If I went with the 5K Id be saving needed space due to less batteries. If I went with the 7K its a $400 difference in price and Id have to get an extra rear battery on top of the ones I already plan to run.

Hey, just contemplating buying a Fi Q 12" off someone and he claims it is "Fully-Loaded" and after asking him is there is any proof of it being fully-loaded he said no. He then said now that he thinks of it, he's not sure if they are, as he only got told that when he bought them off someone else. So, is there any way we can verify if they are fully-loaded or not? Say a Imprinted serial number somewhere and you might have that particular build in your files somewhere and you can see if they were upgraded? Oh he has 2 for sale, thats why i said "If they are fully-loaded or not"....my mate might get the other one!! Thanks, Regards.. Craig

The Fi.BL is being shipped now and i want to know how big 10 cubic ft. is.because the specs says 5-10 cubic ft. so i was going to get the enclosure built to 10 cubic ft. Is 10 cubic ft. good for that sub for max bass and Hitting Good Low low notes or should i stick to the 7-8 cubic ft. range?? P.S.:Space is not a option so you dont have to ask that?These are the options:dual 2ohm,cooling,flatwind coil,daily. How much inches wide & tall should the port be for this monster???? Thanks Guys:)

I will be running 2-18'' BTL's off of 2-MTX TE4001D's. I would like to know if this power setup is good for what I need to run my amps. Yollew top for the starter with a 200 amp alternator, 200 amp isolator, and 2 yellow tops in the rear for the sub amps. How would I wire the 2 yellow tops in the rear. + to + and - to - ? Ground each battery or only 1? Any help with this would be great and where and what battery,alternator,or isolator I should use? And what is the Big 3? Thanks Fi buddies...

How much do they take up as a far as displacement goes..

Hi All, So I've had my two 12" SSDs in a sealed box, 1 cu ft chamber for each sub, for almost a year now hooked up to a Sundown 1500D. It seems like I don't get the lows like I would expect and I'd like it to be a little louder. Do you think it would help to build a ported box for these guys to see if I can squeak anything else out of them, or is it possible that these subs just don't fit my wants? Thanks.

well i started my box today for my 15" btl fully loaded, and i almost finished it (i had to work 1-9 today) my sub is going to be facing forward, and im kind of worried that the basket might break, or that it may mess the box up. i didnt double baffle it today, but tomorrow i am going to, im more worried that when i hit bumps and stuff the sub will torque the box and break the screws. also, is there a way to build a support for the motor, i was thinking just building a half circle out of mdt to fit under it with some sort of support to hold it up...

Looking at building sub box for BL 18 also considering possibly running 2 BL 18s and wondering minimum cu ft for both in the one box ported box-- is L=3' W=2' H= 1.5' i did the calculation right im sure but just wanna double check thatll be enough cu ft hey Thanks