Fi Technical

Hey guys, I'm pretty new to the car audio world, being that I'm only 16. But I have worked all summer and have finally saved up enough for my first system. I want to get a 12" Q and I want to build my own box but I want to get it all planned out before I start ordering everything. I have designed up a ported box that is 25"x20.25"x14.625" and is tuned to 32 Hz and has a net internal volume of 2.2 cubic feet. My question is how much bracing do I need to use and I know that it will reduce the volume, but what will that do to the frequency of the box?

I was wondering which setup would fit better. i currently have a kicker 750.1 and i was planning on gettting a fully loaded 12" duel one ohm sub and running it at 2 ohm. I was wondering if that amp would be enough. If not then I plan on getting a fully loaded BTL 12" duel one ohm sub and running it with a Lanzar2000D. Thats supposed to put our 2000watts @ 0.5 ohms CEA rated. Which setup would work out better?

Hello all my box is finished,carpeted ,tuned at 33hz... what is the best tune for my subsonic filter? my ampi is a DD Z1 thanks a lot

Hi, I'm getting a Fi 12" Q and need some help on a ported box. I'll probably go with the recommend tuning of 32hz, but I was wondering what the main differences between 2.0 and 2.5 would be?

I'm going back & forth between using 2 15" IB3's & 1 18" IB3, but am a little concerned about their output between 50-80hz. I'm going to use 8" pro audio midbass in my doors, but from what I've read they shouldn't be crossed lower than 80hz. Does anyone have any input they can give me on the IB3 line playing these higher frequencies?

Hello all, need some input from the pros. Currently have my Q in a box from obcon (1.25 cuft before displacement) that a friend gave me. The enclosure is made of paperish mdf that basically turns to dust so its time I get a proper box. Now my question is, should i make it for the max 1.5cuft after displacement? Want to keep the notes tight. Also I have it powered with a rockford t1000-1bdcp (birth 1366 @ 2ohms). Thanks in advance for the help.

I bought a used 18" ssd from a buddy.. I sorta wanted to due a sealed box with it but I was told you need the copper coil option to be able to due a sealed box.. I just didnt know if there was any way to tell. Any help appreciated alot

Hey i blew my speaker and i been sending FI emails and myspacing them, but i haven't heard anything from them. Anyone know how to go about sending my speaker to them, or how to get in touch with them, like a phone number, or something.

So i am using my 15" Q for a home theater sub, 12cuft tuned to ~12hz or so. It is a monster on only 1000 watts. Through reading allot on subs and linear tech im wondering how the Q's coil is setup, underhung/overhung, any linear tech, shorting ring, and if there is anything special about it? Im more or less wanting to compare what i am listening to and what its tech is compared to what some people are using. I have to say though that the Q in my enclosure is a pretty amazing experience. just need to get maybe another 500 watts to it and some way of keeping my house's voltage stable. thanks!

Have any of you used an SSD 10 for home subwoofer use and does it work well. I have a high quality 2 channel stereo system at home and use a subwoofer to fill in the bottom end. My present sub has an RE Audio SR10 dual 2 ohm driver and a 500 watt rms amplifier. I am wondering if I would get an improvement by using a Fi SSD 10 dual 2 ohm driver. It would be used in a sealed enclosure to get best quality bass and be the high QTS version. Any opinions would be welcome. I am a bit confused about cabinet size as I keep seeing different optimum box sizes quoted, ideally I would like to know what the HQTS actually is so that I can model it in WIN ISD. I assume all other T&S …

I have 2 12" Fi SSD's with copper coils coming soon and I need a box for my Charger and found this. http://cgi.ebay.com/2006-Dodge-CHARGER-SUB...%3A1%7C294%3A50 Would this box be ok to use or should I have a shop make one? I also found a ported one http://www.onlinecarstereo.com/CarAudio/Pr...ProductID=21319 I mostly listen to rap but also listen to rock, death metal, etc. if that helps

im thinkin of gettin this planet audio big bang 2 1400 that puts 1000 @ 2ohms ive read good reviews so this is just to seal the deal.......any info will help thanks

I cant decide wether to go sealed or ported with my 15" Q...I listen to mostly rap and want good sq bass but at the same time so good loud hard hitting bass...whats your guys vote?

what is the speaker wire gauge for a Fi BTL?

Hello all been reading this forum for a while no w not new car audio but new to ported boxes trying to put one 18" fi btl fl into a scion tc with out taking up back seat. The measurments I have are 40"w 16"h 21"d I would like to tune to 31-32 hurtz. Iwas wondering if this would be enough airspace and if someone could help me with the deminsions I would greatly appreciate it. Oh and also going to power this with an saz3000 sundown if thats any help. And Thanx in advance

hey everybody, ive had my 15" BL for a month now and its running off a Rockford P1000-1BD (1328 rms @ 1ohm) but ive noticed after playing a couple of songs its hot to the touch but not too hot,,my gains are only half way and the bass knob is only half way.... i was wondering if this is normal and is my sub taking on any damage by being hot....????

12" Fi Q with a rockford fosgate punch p1000-1bd Dual 2ohm coil sub wired to 1ohm in parallel 2.5cuft ported box in a 02 Impala tuned to 32hz ------------------- Is this a good setup and how will it sound. I listen to rap & want good sq but also want to blow people away. I also have a couple questions about the setup & about the sub -will it work & are there any changes or other amps that that can make it better for cheaper? -is the rf a good amp? -what component speakers/tweeters should I use? -should i upgrade any electrical (i will go to a yellow top battery already)? -will my alternator hold up to it (i know nothing about my alternator)? -do i need a cap?…

ok so i just bought an 18" fi btl fully loaded dual 1ohm....i originally wanted my box to be 40"x30"x20" with a port size of 10"x18" (which would pretty much take up my whole trunk space) tuned to 35hz ....but ppl tell me thats probably too big...its goin in a lincoln navigator...can anybody PLEASE just tell me if thats ok or too big or what it is that i have to fix to make my sub hit HARD! also how should i face my sub and port? i originally thought both up, but i heard sub facing up and port facing the rear is better, is this true? ok well first off i working with a hifonics 2000 watt brutus for now...hopefully a saz3000d soon...i listen to mostly rap but pretty much e…

So is a 3.9^3 box too big for a single Btl N2 12" on a Saz-2500? I know that the spec sheets say 1.75-2.5 cubed. It was professionally designed and the person who designed it says that it still falls within the thermal/mechanical specs for this sub, so they dont understand why i am questioning its size. I don't want to damage the sub with over excursion though, so any input would be great. Thanks!

Can we get a section pinned to this forum of the options and what they do with the sp4 and also enclosure recommendations

So I'm fixin to build a box to house an 18. I don't, however, know how to calculate my port size or to tune it. My maximum external dimensions are 35"W 30"D 17"H. I want the sub to face the ceiling of my vehicle. I don't know if thats gonna effect the port location or not. If someone could kindly walk me through the process of designing and sizing the port for my box, I'd be eternally greatful and totally post a picture log of the build process. Thanks in advance.

what gauge speaker wire would be recommended for 4 10" fi bl (flat wind coil, cooling) i have 12 gauge speaker wire but im thinking that that is too small. its kicker shielded wire. would i be able to tie the 2 wires together and double them up to have roughly 8 gauge wire? or is the 12 going to be enough?

I just got a 12 Q D2 with BP power hooked up with a JL 500/1. in a sealed 1.5(20*13*15.5) after sub displacement. is the amp to little for the sub? i set the amp to JL specs. and then i get clipping. i've used the same amp on others subs and get better sound and more power out of it. but with ported boxes using the same JL specs. how should i set it with a sealed box?

I know that you don't sell ib3 8" subs . But could you and at what cost ? Looking for one for the rear deck on my Lexus .

Hey, I'm wiring a 2ohm DVC Fi Q to a Sundown Audio SAX-1200D. Being a monoblock amp I don't know how to wire this properly. I've checked quiet a few of the websites with wiring diagrams but none of them are showing how to hook up to an amp with double connections ++ -- All they show are mono or multiple channel configurations. Currently the sub is wired following this diagram http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/1DVC_2-ohm_mono.jpg Looking directly at the side of the amp with speaker connections, brackets = [wire] [+] + [-] - I think with the way I have it wired that it's running @ 4ohm. The goal is 1ohm.…