Fi Technical

I recently bought a sp4 and i have it powered by a hifonics colossus, im getting a 350 amp alternator and just wondering if i need a bigger battery? Whats the point of a bigger battery cause once the car's started the alternator takes over for the electrical system right? The 350 amp alternator should be more than enough to give the amp all that it needs right?

You guys must be busy...I sent a few emails and all I get is a message saying something about email delays...o well I guess I will have to wait a couple more weeks to knwo when my subs will be shipped back to me.

Whats the best kind of wood I can use to get the full preformace out of a 18'' FI.BTL with these specs? Dual 2 Ohm,Cooling,HiXm Coil,Induct heat ring,And Daily option. I plan on buying four!!! Also the recommended option is 2000 Rms but Steve Meade told me he gives his 5000 Rms each he has four also. ''audio-neon'' told me ''meade knows how to build enclosures to compensate for overpowering the woofers thats why he gives them that much power''. If thats true how will I make my enclosure inorder to do that if I plan on overpowering the subs. Is that a good thing if I have a enclosure do that or just stick with 2000 Rms each (or maybe 2600 rms if so). FI.BTL Specs (BTL18) …

Yo guys I am wondering if any body in north Mississippi or perhaps Memphis has a Fi sub cause I'm about to get myself a 18 btl. I just wanted to see the quality in person and the sound because it's talked about alot in these forums. Thanks again

Hey guys i have a FI Q 10 that is run in .5 cu ft sealed its run by a Rockford Fosgate T2500bdcp. Problem is that when you get any kind of power going to it the driver seems to unload starts popping like its has reached the mechanical limit and this is what i would consider to be at a very low volume not sure what to look for to figure this out is there anyone that has had same problem. Please help really want to hear what this thing can do any advice would be apperciated.

ok today i was playing my woofer while driving for about 1 hr. after i got home and parked, i went to the rear and touched the dust cap of the woofer and it felt warm. i was wondering if this is normal and is there anything i should be worried about? my d2 18" bl is being ran on a kicker 1200.1 @ 1 ohm. head unit gains are set to 0 and amp gain is about 40% turned up and bass boost aswell. woofer is in a 9 cube ported box tuned to 32 hz.

says they're rated at 1000rms im getting 2 18" BLs d1s with cooling options, could they handle 1600rms a peice? my box is built its 8.5 cubes (before sub displacement) tuned to 35hz

I've been trying to decide for weeks what i wanted to do for an audio set up. Im pretty sure i have it figured out. Im thinking about ordering it all today or tomorow, so i could use some fast help. Im getting the sundown 1000d and 1 12'' FI sub, i would go fifteen but i don't think i could fit it. I'm stuck between the FI ssd, or fi bl. I listen to mainly rap, and heavy metal(alot of double kicks and what not) so its a daily sub. I like boomy deep bass, i don't care so much about higher notes but the better one could hit them the better. I was also wanting to ask about enclosure suggestions, im not too worried about loosing all my space in the back, but if possible i wan…

I was going to put 2-18'' Q's in a ford excursion until I heard ONE 15'' BTL fully loaded in a excursion powered by a hifonics BXi2006. The box was 3.5 cubes net @ 33hz. Let me say that it was loud!!! I want to run 2-18'' BTL's fully loaded on my new TE4001D amp!!! Would 2-15'' BTL's hang with 2-18's? Or will the 18's smoke the 15's like that? I really want the 18's and if I put each one in 5 cubes @32hz what will happen to my excursion?(Each sub will see about 1800 watts each.) If I use 5 cubes or 8 cubes per sub what would it do to the sound of the box? I want my X to fall apart from all the bass and I want it to be LOUD. What would the Fi Audio Guru's do...

I need some one to send me a template for a 15" Btl So i can see if i can fit them before i buy them. Also so i can get the holes cut for once they come.

Hey guys, i need another recone for my MT. Im looking for dual 1.4, optimized for use with 2 powerbass xa3000d's. I want stiff but not super stiff, i was thinking quad spider, 2 stiff, 2 med stacked alternatly, with heavy duty tinsel. If you guys have another idea im open to it. Lemme know please need it asap. BTW itll be shipped to ontario canada.

want to know what fi soft parts to beef up my aa12" havocs .will the motor support an spl optiion or would it be better daily, or in between. .......... FRANKIN HAVOCS ON THE WAY????????!!!P.S. CAN YOU GUYS HELP ME!!!!!!

I have been searching all over the internet to find out about qts (never even heard of it before i was looking into Q's this isn't my first system, i just never accounted for it before. it looks to me like it is highly dependant on what you are doing fi q 15's have the cooling and spider upgrade options, that is it i am going for sound quality with this build, dual fi Q 15 in a sealed enclosure measuring ~ 2.3 ft^3 per sub (after displacement and bracing of course) each sub will have it's own rockford fosgate t-1500-1bd giving them ~1350watts @ 2 ohms (already had one and just bought a second off a friend, who said headroom was a bad thing) they will be in the back…

hello, as stated i am in need of a box design. i got 1 18 Q and a aq1200d amp and it will be going in a 2000 grand prix. so i have about H = 16". width = 30". and length = 32" of room for a box but i do not know how big to make the port. i am going sub on top and port at back. suggestions needed.

Need to know how much a recone would be for this sub. Thanks

I would like to get a replacement gasket for 12" SSD,is it possible?........Also whats a good size sealed enclosure for 12" SSD ?

Hey guys So here goes Have my two Fi Q18's off a JBL BP1200.1 When i first installed them they moved in phase perfectly it was actually awesome to watch ! Now they dont and output is down noticably, So.. .. I pulled each speaker out of the box and checked for physical damage, none, no burnin smell AT ALL and no loose glue that I can see, second i Tested each speaker on its own, works fine, i checked coils, fine they all show up the same. Im runnin dual 2 ohm in series parallel and am getting 2.2Ohms on the VMM for my final load , fine.. Speakers were making a funny noise sort of a raspy sound right after they stopped working in phase... Unhooked em right away , checked, …

I have a fi q 12. I didnt choose the high qts option because i had planned for a ported box, but ported is wayy to big for my little trunk lol Would it matter if i put the sub, without the high qts, in a sealed box? If it matters, im going to put it in the smallest bOx possible. I dont plan on running the sub to the max, just some extra bass for daily driving. Also, i hate rattling, so you can bet i wont run it any where near max output.

I'm looking at buying this used fi btl n2 and i'd love to know the specs if anybody has them or has a link to them,

I have a 12" bl and I currently have it wired with 16 gauge speaker wire and I am about to re-wire it with 12 gauge, by doing this can I expect a a change in the output of the sub?

I purchased a Fi Bl 15 Waiting on it in The mail (awaiting Fulfillment) and i am puting it in a 04 honda accord coupe i would like anywher from 3 to 4 cubic feet but being able to put in my trunk restricts the height it needs to be no more than 17 inches high can anyone help me with dimensions and or advice on how to come up with a precise enclosure build for my sub i would like to be tuned anywhere 30 to 35 htz it would be much appreciated

I want to make sure I'm not going to burn up my coil on my SSD. I bought my sub 4+ years ago (I don't remember exactly), copper coil option only. Back then they were rated at 800rms. I have it wired down to 1 ohm, so it should be receiving 1200 watts+ since I have read lots of times that Sundown amps usually do over rated power. I set my gains using an SMD DD-1. I know these are frowned upon by a lot of people as a waste of money, but I didn't buy it and just borrowed it from someone who did. It helps to set gains so there's no distortion, so I'm assuming nothing is clipping. That's just my assumption though. I set up my headunit, sub amp and mains amp all with the DD…

Hey I was talking to Scott about reconing my tc9. he said he could, but i think he has been busy lately so i'll post this here lol. I have the address still from and earlier recone i sent in, can i just send the sub in with a little note stating what i want with my contact info?? or would there be something else that i need??

11 cubic for 2 Q 18's. i want to retain the 33hz volume as much as possible but i absolutely want to reach 75hz at a very good volume out of these. my idea was to go 11 cubic and put a bit of poly fill inside. it is not for certain that i will buy 2 Q's, i will know after i test my rebuild SP4 to see if i can get the volume i want out of it at the frequencies i want. im expecting i wont be able to. this would be the box design:

i have 2 18btls but only one can fit in my car with a ported box. actually i want to sell one btl but in case i dont find a customer who buys it for a reasonable price, can i put both btls in a sealed box? as the other btl would just lay around losing price. i know fi doesnt recommend that. and i know i will lose alot of spl. but how would the sq change?