Fi Technical

in my f150 ext cab with a 12" ssd with flatwind and bp and hifonics bxi1206

Im planning on purchasing a single 12" SSD not sure what to get DVC1 or DVC2, i have a 08 ZX 750.1 kicker mono (2ohm stable). Now for the axcual question i listen to rap/hip hop, trance, and alternative rock and i have no clue what so ever on the enclosure that i need to use for the type of music i listen to. I have no idea on tuning ports. I would really appriciate if poeple could help me out to get what im supposed to use. Im looking to get a ported enclosure and this will be used in a Blazer(SUV). BTW how many cubic feet would be good for the sub. Im not looking into getting a humungous box in my cargo area. THNX

I need to get my box done before my subs get here. So I need to know how deep to cut so the subs will be flush mounted. Does anyone have that info or have a bl to check for me. Thanks

Hello, i want to build a box for (2) FI Q 15s, here is the size of the area i have too work with WIDTH = 32 INCHES HEIGHT = 18 INCHES DEPTH = 29 INCHES I will be able to add height to the box if I shorten the depth for a sealed box i can use the cutout sheet that FI recommended at 2.5 c.f., i'll just build two seperate boxes then just bolt them together. now for a ported box i have no idea what volume or what to tune it to??? i listen to metal, rock, country, blues,everything inbetween, but i don't listen to rap. FI specs for a ported box is 2.8 - 4 cu. ft. and use 12-16 sq. inches of vent area per cubic ft. of volume. i would like a box that would not be too boomy, i lik…

I'm looking at building a custom box for my 2 fully loaded fi btl 15s and need some help with the dimensioning. Im looking at have a 9.5 net cubic foot box tuned to 32-34hz with a solid wall brace in the middle separating the two subs. For power im looking at either 2 rf t2500-1bds, 2 sundown audio saz 3000ds, or a autotek mean machine 4000.1. Does this seem like a good setup. Im looking at putting it into a chevy silverado ext. cab of course with all of the electrical upgrades also. Thanks for any help

hey whats up guys just got my box built from this guy that has built them for me before and never had a problem but this one just looks not right so i need help from you guys....the deminsions are....width is 48" height is 22" depth is 31.50 port hole is 3.75 x 22 port length is 27.75 and it is supposed to be tuned at 32hrtz...does this sound right or do i need to have him redo it thanks if i forgot something let me know thanks again

So, here is my problem. I am going to be running one sub and I have a slight "Monk" issue...for those of you who know that show. I feel like things have to be balanced out. So, I want to put my sub in the middle of the enclosure and would like to have two ports, one on each side. Is this clausable and how do I go about figuring out how much port area I need. The specs say 12-16 sq inches of port per cu ft of box volume. So I am planning around 40 sq inches of port area total. Would this be 20sq in per port or am I calculating this incorrectly. Any and all help would be happily listened to. Thanks

Could one of you check my port length for me? 4 cubes @ 32Hz with 2.75" wide x 20.5" tall port is what I'm aiming for. I used an online calculator and it said the port needed to be 29.5" long... but someone else told me it needed to be like 36.5"? Thanks a lot

Its almost time and Planning has started. I still need to find out if I can make a slot port work if not maybe two square or even aero ports. Suppose will have to do some maths and cross-checks. Draft box (not to scale) Let me know what you think.

I just recieved my Q12 D2 and am now shopping for an amp. I'm looking at the Rockford Fosgate Punch P1000-1bd. This amp sends 1000w X 1 @ 1ohm or 250w X 1 @ 4ohms. I can run my Q12 in series and have a 4 ohm or parallel and have a 1 ohm. If I run this parallel, one of two things will happen, I don't know which, my understanding of electronics is limited, obviously. Either each voice coil will see 1000 watts, meaning 2000w are being run through the sub or each voice coil will see 500w, meaning 1000w are being run through the sub. If I run it in series, will each voice coil see 250w, meaning the sub sees 500w or will each voice coil see 125w, meaning the sub will s…

Hey Scott, I sent you an email regarding a subwoofer im building. Just letting you know through here. thanks Damon

do anyone know what the prices will be to recone an ssd 12 2dvc Flatwind Coil?

Looking for some help designing a new box for my sub. I listen to a lot of rock/metal, but I do like rap and would like to be pretty loud. Any help with sub placement, volume, what to tune it to would be great. also it is in a blazer. As of now its in a sealed box around 2.6 cube with a Hifonics 1208d and i know it has so much more potential. Thanks and if any other info is need please let me know

I broke my terminal loose pulling the sub out of its box, I tried crazy gluing it back but that aint working, My question is, whats the bolt for on the terminal, the terminal is not screwed on, it looks as if it was just glued on over top of the screw instead of screwed down. Now, I cant get the terminal flush with the screw head to even glue it down properly, what would you guys suggest? Right now, the terminal is just flopping around, I know that cant be good

i have an 04 honda accord sedan which im going to put a Fi Audio 15" Q Sealed Box sorry i dont have trunk dimensions... what do you guys think will i have any problems? Design me a box! anyone pleaz

is it ok to trace around the inner black gasket ring that comes with the subwoofer to get the size for the cut out hole?

look at the cooling channel around the one o'clock position, it isnt lined up but all the rest are! is this normal? if not any performance issues from this?? thanks

I'm new to the forums and i was interested in purchasing a 15 inch bl and running it in a ported box for loud bass. I'm not into competitions or anything like that i just like loud music. I've been watching videos on youtube and the realm of excursion and i think these subs are badass. Now to my question, if i purchased one fully loaded 15 inch bl how many watts could i put into it and be able to pound everyday in a daily driver without blowing it and which amp or amps would be best for it?

hey all im really sold on getting a bl 15 for my car. i was just wondering how much it will cost to get it shipped to montreal since it states on the fi site that shipping only free in the states. im also wondering if the flatwind coil is good to get if i plan to use the sub daily (will it give much better sound).

A lead came off my BTL as I explained here. Wondering if this lead is the proper size/wattage...or possibly what you would recommend. Love my sub...thanks for the help! ~Abstract~

for starters 2002 ford mustang gt double din jvc Big 3 upgrade 250 amp alternator running hifonics brx 2400.1 with 640.4 both brx changed up build was going to run 1 fi bl 12 dual 1 already ordered and on the way but ran into a fi btl 18dual 2 my game plan is to remove back seat and build sub enclose there web site says 5 to 8 cubes tuned 32 htz got just barely enough room for 7 cubic foot box with amps in trunk lol! Is it possible to get go low end with 5 cubes trying to open a little area other wise the 18 is 3 inches from my head in case I didn't say 18 is sub I will use also do have xs battery coming also I guess im asking for help to design size of box and port si…

Went with 10" bl, cooled, RF t10001bd at 1 ohm, 1cf ported box, (which is tuned a little high, might take apart and add an L to the port to lengthen it and drop tuning a bit). Just bought a 200amp alt. 1/0 wire all around, 4awg on alt. Was wondering if i should go for a cap, read that independent testing puts this amp closer to 1500watts at 1 ohm and want plenty of aux power, for starting the car and what not. Also should I stuff the box? Been a while since i had bass in the car, but then nit was just a thrown together mismatch system with no regard to resistance on the amp or any other important factor for that matter..wanna do it right this time. Any advice is appreciat…

I have a 12'' Q dual 2 ohm and it will be wired down to one ohm. I have a hifonics bxi1208d powering it. I wanna make sure i get my settings right on my amp. Where should i set the SSF at and the low pass at? Also since my HU has 4 volt output, should i set my level to 4 volt? As for the box, what hz should i have it tuned to. I listen to mainly rap and deathmetal...yeah i know complete opposites haha any suggestions will be greatly appreciated :)

I plan on building the enclosure per Fi's specs of 1.5 ft @33hz. The dimensions I have come up with is 14.5" x 14.5" x 18" using3/4" MDF this gives me 1.4937ft after subtracting the woofer and material displacement. I can add to the 14.5" sections of the enclosure if need be to account for port displacement. I'm not familiar with how to calculate port displacement though so I'll need some help on that as well. I planned on mounting the sub on the 14.5" X 18" side and would also prefer to have the port on that side as well. I just want to make sure that I get this right. I'm looking for maximum SQ but still want to have good output. It will be powered by 550w/rms in a PT …

If I choose to invert my subwofer so that the magnet is outside of the box, shoould the box be any different than if it were mounted regularly?