Fi Technical

Greetings, and thank you in advance for considering my inquiries. : ) After becoming privy to the specs and recommendations for the 15" BLs, Qs, and SSDs, I have hit a wall in my plans for purchase. It appears ported enclosures are exclusively recommended for the BLs and SSDs of this driver size. However, the problem is the recommended tuning of which is higher than my target low frequency response of 20 hertz. My questions are: 1). Are these recommended tuning figures aimed at SPL applications? I'm far more concerned with brilliantly effective low range response than mid- bass volume. 2). Can they be tuned to 20 hertz and still be effective drivers? 3). If not, would a …

After hearing a BTL for the first time yesterday i have decided that i want one, really bad. I will only be pushing 2000 watts to each sub in a daily setup (no comps). Is there any point in getting the high XMax coil, does this loosen up the suspension for better SQ. the BTL that I saw was only getting 1500 watts and didnt seem to flex much so im not sure if the high xmax coil would really do anything. Thanks, Keith

i was wondering if you guys would help me get my port lengths and areas down. i just reciveved my btl 18" yesterday and looking to build the box right now i am looking at having a 7 cu ft after displacemnet. i alos think i want it tuned to about 32 hz. i t will be square port

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 …

I need some help building a ported box. I wanted it to be Width:44 Hight:20 Depth:17 And tuned too 34 Hz. I have never build a ported box before lol. This is for a fully loaded BL 15.

I was just wondering if anyone has some box specs for a single 15" BTL for a 2002 Nissan Sentra XE? Any help would be great. Thank you.

I have been looking at getting a fi bl 15 for my 2002 nissan sentra and was wondering if i could fit the box needed for this sub in my trunk? Also what options should i get i want the real low deep kinda bass? and what amp would be best for my budget i would like to stay under 500 for the amp and im not sure which would be best for me and where i dont have to do the big 3 any ideas or help would be great thanks

I recently purchased 2 Q15's and I'm going to have them in a custom made sealed box in the back of my car. I don't know what a good amp would be for them, so I'm looking for suggestions. Thanks. Specs from my order: - 2x Q15s - Dual 2 Ohm - Cooling: Yes - P Chamfer: Yes - High QTS: Yes - Spider: Yes - I Heat Ring: Yes - Internal Lead: Yes - Rms: 1500W

ok hello everyone, i dont know if this is the right topic for this forum but im starting to pull my hair out looking for a good solution.... i have a 1990 toyota celica gt does anybody know of a good high output alternator for this car? i would be happy with a 150 amp or higher my budject is 350 ive looked at ohio,mechaman,irragi,denso,powermaster and couldnt find anything those are the brands most people reccomend. i dont want to buy a brand i have no knowledge of and be a piece of crap. powerbastard has import universal one but ive heard bad reviews any body have a solid solution or idea? greatly appreciated..

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.

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…

I know that posted t/s paremeters on ficaraudio.com are for the stock BTL with no options. would it be possible to get the t/s params for the common fully loaded BTL built for daily music? Just curious to see how it changes, and I know you guys will always say stick to recommended box design, but it would still help me to have the t/s params.

I'm kind of limited in space but here are the maximum external dimensions 34"W 18"D 14.5"H Sub is Fi BTL dual Mag. One out of Shawn Fleming's van from 2007 Dytna SBNs if anyone is familiar w/what he had. I only know that tit is a dual mag and will definately play music. Amp Sundown 3K Not looking for SPL nor just the LOWZ Sub up port back (I will do both in center although woofer mounted to one side makes more since to me) but hey what do I know I can't even measure CF So I guess basically can anyone figure out how much Cf my box will be minimal bracing (just 3 2x2s) 2 13"L 1 32.5"L and dimensions on a port WxH=port but how deep to adjust the tuning? Would like …

just finished reconing my 18" BTL a few days ago.. been breaking it in at low volume.. after i thought it was broken in, i turned it up slowly and as i started getting to about 1/4-3/8s level of where i would normally play at my sub makes some what of a clicking noise to the sound of the bass, kinda sounds like plastic on plastic nocking/rattling.. any ideas from any one here as to what it could be ? havent pulled the sub out of the box yet to check anything, dont want to if i dont have to..

hey guys i just ordered my FI BTL and since i know they are swamped with orders im in no hurry to build a box. i would rather take my time and do it rite. i just need some suggestions on how big to make it and maybe a design. measurements for my vehicle are 44.5x17.25x33 and its going in a 2006 king ranch expedition. its an 18'' btl and i would like to tune the box to 32 htz oh and i have a hifonics bxi2610d and am ordering a DC power HO alt i have 2 yellowtops with lots and lots of 0guage if i left any info out let me know, still kinda new to the forum

I have an older RE HC 15 with the 4 spoke basket dual 2 ohm version and need a re cone kit for it, it final blew about 2 weeks ago. I have been trying to to contact Fi via email with no response. Was wondering if anyone knew which recone kit on their web site is the correct one and will fit on the HC motor and wanted to get it upgrade if possible and add a need basket as well? Can anyone help me ?

hello its me again I AM A be buiding my box tomorrow but i dont have a desing yet, ive tryed winisd but i just dont get it and i dont realy trust the reaudio calculator, so if somobody here with good experience building boxes would just make up a desing for me i will pay 5 dollars through paypal sorry but im kinda broke... lolz my dimensions are 39" width 19"height and do whatever deep i just need from 6 to 8 cuft. thanks a lot.

Hello Guys/Gals, I was wondering if cold weather will damage a sub? Do I need to keep it down till warmer weather, or can i just let them wang? I live in northern Indiana and its currently in the teens here, so stuff gets brittle... Any help would be appreciated. Thanks.

hey guys so i bought 2 15 bls last month and have installed them in a 9.5 cubic ft box with 102 sq inch port and have 2 amps at 1150 rms each going to them. for the first week it pound ed ma were i oculdnt even swallow. then just yesterday i brought it to a shop to get it db tested and hit a 150.9 with eas apparently says the guy. but i noticed after that the ext day t wasnt as loud to me or hit the notes as deep. did something happen to the subs or is it just my ears and body getting used to it. plus i dnt know wut to smell for or here? i know this sounds stupid but i dont want to do damage. replys would be greatly appreaciated!!

I have never had this problem untill I started using my FI sub... So hopfully someone can shed some light on the subject.. When hitting major bass notes on full tilt, the amp shuts off and shows CUR..Which is excessive current. What is this and how the hell do I fix it?

ive spent about 4 hours trying to figure out how ohms work. i feel like im the only one that gets confused on this subject. apparently is simple. someone help. im going to get a btl 18 inch but im not sure if i need to get a dual 1 or dual 2. i want to run a Hifonics amp thats at least 2000w. but if someone could tell me what the ohms have to be on the amp for me to get. or if someone could suggest a Hifonics amp for me. that would be greatly appreciated. on another subject...... what are some decent quality speakers that go with this? (6.5 inch speakers) or just tell me some good companies to buy from

alright im going to be ordering a 12 Fi fully loaded..and i plan on running around 1500rms at 1ohm. do you think i need to upgrade my electrical system. i have a ford f150 with a 130 amp alt...what do yall think???

I just ordered a 15 bl today and im still pondering on what size box to get..do i go for a 3.0 cub box or a 4.0 cub box any help would be greatly appreciated

Currently I'm using the 9 cube @ 32hz after displacement feeding it about 1.1kw rms and it sounds pretty good but I was wondering would I gain anything from going with a smaller box (7.7 @ 35hz~). IE: would I feel the bass a bit more? would it bit any louder? The only real thing I know about having such a huge box tuned at 32hz is the lows it will pound, other than that I'm a noob when it comes to the dif sizes... Fi GURUS, once again I need your help!

Hey just wondering how (2) FI 12" Q's and (2) kicker 1000.1 will sound in a 3cuft total sealed box will sound? Thanks, John