Fi Technical

My first major build and I want to do it correctly, please point out potential issues. Just bought an SAZ1500d V.2 amp cause I found a smoking deal and couldn't pass it up. It's on a truck barreling towards my house right now Looking for a sub to pair it with and the Q caught my eye. Looks as if I add the cooling package to the sub I can pump another 200-500 watts into her which will align perfectly with the Sundown's output. Going Dual 2 Ohm coils and wire it all up for total impedance of 1 ohm and I should be styling. Only thing I'm still debating is whether I should go with an 18" or 15" woofer. The 18 attracts me for the sheer fact that it's an 18. It'll b…

ideally, what would be a good power range for the ib3 12 inch sub?

just got my 12 bl hooked up today... its killer on the lows like it hurts your ears but when it hits the highs you can barely hear them. maybe it will get better when it breaks in im not sure... just wondering if this is supposed to happen or not

Hello all, Havent been on the forums for a while but Im doing a new build and need some recommendations. I was thinking of purchasing 2 Q10" subs and installing them in .8cu ft enclosures. These enclosures are Subthump stealth boxes that fit behind the wheel wells of a 2010 Camaro. I have a few questions. 1) Whats the diameter of the magnet on the 10" Q? The max magnet diameter of this box design is 6.75". Will it fit? And do any of the build options change the magnet size? (cooling option. pchamfer, etc.) 2) The specs on Fi's website recommend .2-.5 cuft after displacement with the high qts option. The boxes I'm looking at are .8cuft. I see people on the forum talking a…

Im getting a fi btl n3 18 and haven't been able to find any dimensions to build a box. Can someone please give me dimensions to build a box and I want to tune the box to 32hz and pictures would be great too

i need help with measurements for a enclosure build for two fi bl 12 tuned to 32 hz. i can build this enclosure up to 4ft wide 18in deep 18in tall im looking for this to be a 5 cb ft volume... thanks for your help i need all measurements and slot port width lenght measurements... again thanks...

I'm in need of the T/S specs for a 15" BTL (2008 Single Slug) They're not on the website. Building a new box for them and I need to have the specs to plug into my software. Thanks

Just what the topic says, i need to know the diameter of a BL 12 magnet.

I ran 2 bl 18's off 2 sundown 1500d's for little over 2 years with no problems at all. Those bl's had cooling, flatwind, daily options. Now they offer to have a 4" coil for extra $50. This time I will be running either an aq or sundown 3500 on 2 18's. With the 3500d should I go ahead and get the 4" coil, Im pretty sure the 3" would be fine since I ran the others with no problems that long. thanks for suggestions

ok guys i wanna put in my car 2 12" fi q d2 and i dont know how many cubic feet my box needs! i wanna hit lows soo i want it at 32hertz of tuning. i know that one fi q 12" need 2.35 cubic feet after sub displasement for 32hertz i have a 99 maxima and my maximum mesure is 36" width 14.5" height 26" dept i wanna use 3/4 mdf anyway i really need your help and thanks alot! and what type of glue ad nails should i use ... anyway really enjoyed your help

I would like to get a FI 12 Q sub. On the front page of the FI website it says "All subwoofers are custom made to your desired options in 3-7 business days" but contradicts itself when you go to order the sub which says "30 day build time due to US steel delays." Which one is it? I want one of these subs but not sure I want to wait 30 days for a build on it.

I have an ssd 10 under the back seat of my nissan titan and im havin problems with it hitting the grill i have on the box when it pounds. Ive been adding wood to create more space between the sub and the grill but i was wondering if there are any other techniques i could try. Any help would be appreciated.

The website says between .8 and 1.5 cu. ft. for a sealed enclosure. Could someone give me a more exact size? Or at least tell me what would be the difference in sound if it was placed in a .8 cu ft box vs a 1.5 cu ft box? I'm currently running an IDQv3 12 and was given an exact volume size for a sound quality setup. What do you guys suggests? I listen to rock and electronic music. Thanks in advance!

i understand the high QTS option is for sealed setups, but has anyone throwin a Q series with the high QTS in a ported box? how did it sound and would you see a problem with doing this?

Hey guys, I am planning on installing a 10in Fi Q subwoofer in my 2009 BMW 128i. I have wanted to do an install in this car for quite a while but limited trunk space has kept me away until I decided to build a custom fiberglass enclosure. I plan on using an AQ1200 D amp with the Q and with that being said I am concerned with the amount of power I will be drawing from the car to power the amp and sub. Any input would be greatly appreciated as to whether or not this might pose a problem in the long run with my battery or alternator. Thanks in advance.

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!!!!!!

all my life i have been a sealed guy, i just love the sound of a sealed setup and how low and deep they can play, so i got talked into going ported for my next system..im going with 3 18'' fi Q series, fi suggest 6-10 cu ft per sub, im thinking of going in the middle with 8 per sub, im also going to throw 800 watts at each one, what do you guys think about this? i will be using this for daily driver and i listen to both rap and rock music..so im hoping the subs can keep up with the fast beats..also 28hz sound good to you guys?

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..

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'm getting my plan's ready on my btl n2 18. I already have my amp to power it(hifonics for now). But I'm still deciding on the box plans. I'm doing a ported box tuned to 33hz. I want to do the box perfect and to spec but I'm having a hard time calculating the bracing and how thick I should make it for safety. Any advice would be appreciated thanks for your time

I just got my box for my 2 18's Q's but i dont like the way it sounds, it's in my explorer , he tuned it to 30hz in a 13 cubic ft. box, its all high bass. i want a groundshaker. how many hz should i tune it to??

Does this look good?

I am interested in two 12" BTL N2 dual 1 ohm with all options and daily coil. I have 3300wrms available but I will set gains accordingly. I would like to keep the enclosure as small as possible but within an optimal spec. What is the recommended enclosure size for my setup? Thanks edit change of plans

I have (4) N2 15s walled in my car. They've been installed for a couple months now and have been ripping my head off daily. Doing a 155 outlaw at 28hz! Anyways, today I seemingly lost a coil on one sub. No smoke or anything of that nature, just for some reason one coil on one sub is done for. Took the sub out and the voice coil looks fresh as can be. The other coil on the sub also reads out just fine. All of my other subs are also perfectly fine. Really have no idea what the hell happened. Subs were bought brand new from Fi of course. Can or would this be fixed under warranty? I'd really like to get this taken care of before the comp season starts heating up here.

not sure if this is the right spot to ask, but would 2 stock SSD's be ok on an AQ2200D?