Fi Technical

Sooo, I am now in the process of designing my box for a single 10" sub down firing in a ported enclosure. I got the rough idea for the design from those AudioFire boxes for trucks. The sub will be down firing right behind the center console, the main box will go up to right above the rear seat from the ground, the port would then go from the box to the back of the seat and do a 90 degree and back towards the front seat. So, the port is going to be pretty much external from the main portion of the box....my question is, how do I go about figuring out the tuning frequency of this port? It is going to be a fairly thin port but pretty long and I am just not to sure. At th…

To get right to the point I'm trying to determine what upgrades are necessary, and most importantly where to get this done. I installed a 200amp alternator, and 3 batteries with a single run of 1/0 from the front. I am wanting to run around 8-10kwatts rms, have about 7k now, and want to try to keep my voltage pretty steady. More batteries are in the plan when I figure out how to put them, but I really want some info on the alternators/wire. I have this on 2 btl 18s. I went to all the local shops here in Myrtle Beach, including alternator specialist shops, and besides the one that wanted way too much for a 300a alt, all of them said they could not get anything above 200amp…

I was wondering what the best type of glue is to recone my Fi BL??

how much would be to get a recone for a re xxx18 d2

I have an oppertunity to pick up a pair of TC9 Motors for cheap. Can these be made into subs by Fi? Looking for 10" subs. As well, what is the power rating on these motors?

Alright im not realy sure about this so ill ask it here. I ordered 2 18in D2 Single stack recones with highxmax coils but there not flatwound. Is my order wrong? im under the assumption that these should be flatwound for better power handling and cooling.

I will pass my phone number on si I can speak with you since I will not have access to a computer for most of the day I need to buy 4 15" BTL's fully loaded with the best SPL options I need them absolute latest by monday or tuesday or even wednesday morning next week for the 3x db drag in Niagara Falls Ontario on the 28 & 29th I also need t o talk to you about the coil configs and the options of the motors sorry i posted this in the wrong forum

Bought a new Fi Q 12 and i was wondering if you guys could help me out with the enclosure, i have a hatchback its a golf with Cdt es-520 with upstage up front and cl-61a in the rear powered by a Directed 1100d5 and strapped to 600d for 1200watts @ 2ohm for the sub. i listen to wide range of music but mostly reggae, hip-hop, r&b, rap, pop, and some classics. My goal is sound quality but i would also like it to be loud at the same time without sacrificing sound quality and with that said would a sealed or ported enclosure best suit my hatchback. Thanks guys!!!

I am thinking about getting a pair of fi q 12's I am going to be running them ported in a daily trunk setup on a Saz-3500v2. I am getting the cooling option for sure but for I am not sure if I should get the extra spider & the internal lead options, I am thinking no on these options but I would like some opinions before I drop my cash on these subs.

Buddy of mine has 2 bl 18's ran off 1 sundown 2500d, he has them in slot port now in about 12.5 cubes gross. They sound decent, but dont really have the lows, and its tuned to 32hz. He wants new box with 4 6" aeros's in about 16 cubes net tuned to 32hz. How does this sound for size? I ran 2 bl 18's about 2 years ago off 2 sundown 1500d's in about 18 cubes net with slot port and they pounded the lows, and sounded perfect. I just havent done any builds with aero ports.

Hi there, after trying to build my own ported box , with certain limitations, i came to ask myself that why do we need 12-16 sq inches of port are per cufeet ? The answer was to avoid air shuffing. BUT ! If a box is 3cufeet , the good book says to use minimum of 36 sq inches(minimum) port area for it, now if we use the same sub to play in a 5 cu feet box, port area increases to 12X5 = 60sq niches (minimum) Now i am guessing that the subwoofer will not miraculously start to push more air ,and that we may have to increase the port area to avoid air shuffing. The sub should displace the same amount of air in a 3 cu feet box or 5 cu ft box. So , why not use 36 sq inches port …

I'm sure it's probably not a big deal but my my dad had accidentally barley scratched the surface of the surround of my sub and decided to put a bead of epoxy to cover it and I was kinda upset .. And also while removing my sub from the box my right hand had slipped and accidentally hit the dust cap .. Nothing was damaged because of the hard cap but will these effect my sub and should I worry about it or is it not a relaly big deal?

Can someone tell me why about 1/4 of the spider would be torn and a lil crispy and the rest be fine? the coil looks fine too btw...powered by a KX1200.1 in a 2.6 internal sealed enclosure...it smells AND feels as if it were on fire...the gains were fine and everything, i wasnt even playing full tilt when all the sudden...silence, no pop or any sound, just no bass and the smell

I own a 2003 Mustang GT, and am trying to get the best system I can in it. I have VERY limited trunk space and so chose a single fully loaded 12" BTL powered by a Kicker ZX2500.1 (2500 watts RMS into one channel @ 2 ohms). I also have a kinetic 2500 in the trunk. The trunk opening is too small to get any sized box thru so I'll be installing it thru the back seat. The opening is 13" high by 32" wide, and 28" deep. I'm looking for a ported box to get the most bang out of the sub. Anyone got the best design for the BTL with the max dimensions (13x32x28)? Thanks.

Hi there, I am not sure exactly what I need to have all my settings set at to run my bl 15" and need a little help.. The box is 4 cubes and tuned to 33hz, more importantly the amp is a hifonics brutus BXI-1210D, I need help tuning this for the bl! The amp has "level" or "gain" 9v-0.2v, "Phase"0-180, "bass eq" 0-10db, "subsonic" 15-35Hz, and the "lowpass" 35-250Hz. I need to know where to put the Phase, and Lowpass the most but if someone knows exactly how to tune everything feel free to tell me!! Thank you!

I was going to oreder a 12' fi sticker for my truck but the shipping is 12.00!!! Why and how is the shipping that much??? Its a 0.76 lb sticker that costs 4 dollars. But 12 to ship somethings not adding up here.

I have emailed the address available on the site and havent received a reply. I need the specs for the new 18" btl fully loaded.

As I stated in another topic, I burnt one of the voice coils in one of my 12" SSDs. One of the voice coils is still fine. I was just wondering...until I get the recone kit in the mail, is there any way to wire up my amp to just one of the voice coils? The reason I thought about this is I did the AA battery test (hooking up the + and - to the sub to hear the pop) and since that made noise, I was thinking maybe it could run off one voice coil. If that is possible, would it be bad to have one sub like that and one sub wired normally? Technically wouldn't it just be 1.5 ohms? My amp is 1 ohm stable. Thanks a bunch, Mike

Just bought a pair of the older double slug Q15's for my buddies install in his Suburban. Can't remember the specs of these models, so I wanted to get it straight from you guys at Fi. They are fully loaded and I also believe they are the high QTS models, as the previous owner had them installed in sealed boxes.... My friend is looking to have me design a sealed enclosure for them, and I am not sure what the recommended volume is for them. Can you help me out? They will be powered with an MB Quart Onyx 1000 @ 2 ohms for about 750 RMS to the pair. Possibly will add a second amp to power each sub on its own amp later down the road, but that has not been decided yet. Merry Ch…

Just wondering... Does the Hixm coil has better efficiency in comparison with the standard BTL coil?What are the pros and cons when using the first in SPL /power handling/output? Is there any signifficant difference in the subs sensitivity? A few days i have watched some tests on some new quad stacked motor subs and i wondered if it would make any difference if the coils were put a little higher than they originaly ought to be put (like 4-5 windings were out of the motor top instead of putting all the coil in the magnet gap)

So I got a 15" Fi Q for Christmas. Everything else that I need for my system I have as well. The only thing that is missing is a subwoofer box. Originally to save some money I was gonna build my own sealed enclosure. But after talking to some of my friends and family I decided to get a professionally made box. Here's the problem though, the only site that I've managed to find is, www.klausaudio.com. And while the site looks great and the options for customizing your box is superb, they're not taking orders right now. (Or responding to my frickin e-mails...) So I wonder if you guys knew any other respected custom box dealers/makers. P.S. Since I want a sealed enclosure I w…

I cut a box according to the ssd cut sheets, and it is in a 08 mazda 6i sedan (non hatch model). well.. Downside is it does not fit with the sub facing the seats. I gutted the trunk to bare metal to see if it would help me try to squeeze it in.. NADA. I PROMISE you it does not fit any other way unless I somehow build it in the trunk. So my dilemma, is that the sub is pointing straight up towards a panel, and a lot of the bass "energy" is soaked up from it. Is anyone knowledgeable to give me the smallest possible dimensions for 33hz ported box? I suck at numbers, they give me headaches, and I failed alg. twice in college.. lol. I know that sounds lazy, but sub boxes are n…

hey all i just ordered my first fi btl 18 . i choose all the options that were availible for it so i guess it is fully loaded right? anyways my real question is how THE heck am im going to fit two in my civic ? i know most might say i prob shoulda thought of that first but i will find a way to make them fit . my best idea yet was to actually take out back seats and extend the trunk into the car so when you look into he trunk it looks like its reall deep. than build THE box into the trunk extension . basicly you would open the trunk and the woofers would sit right were the back of the seat was originaly and the box would be ported on the inside behind driver and passenger…

need recones desperately I can best be reached by email [email protected] or at night time ( eastern time GMT -5hrs) im on MSN till about 12-2am same email addy please respond as my email has not been replied to... I know u get lots... or just pm me a phone number I can call