Fi Technical

Basically I'm stuck between two designs. The first one is 4.3cf with a 6" flared aeroport tuned to 35Hz. The second enclosure is 3.5cf tuned to 32Hz using a slot port, with 54" of square port. The power is 1000 watts rms at 1 ohm.

what's the sub displacement of a btl 18 tripple stock magnet? thank you

Does anyone have any clue where I can obtain so rough plans or designs on making pacman boxes for my 4 15" BTL's??? I have been searching but coming up with the stupid pac man game somehow..

i know this subject is beaten to death but this time i actually have some specifics im either buying a BL 15 or 18 this is going into an 09 scion xb (hatchback/crossover) upfiring for the 18 this is probably the box i would build 14 sq inches port per foot about 6.22 volume or 6.5 if i invert the sub or, i could do a 15 and put it into the ideal box, as there is definitely room for one

Ok go easy on me fellas. For the past 4 or 5 months my Bl 18 has been in a wooden box without paint or any covering. So Saturday I decided to paint my box. So I painted the box black. Then I wanted to get creative. So I chose my colors to be black and gold. I tried to paint my dustcap but I messed up and now I need another one, but I was wondering if I could get my new dust cap in my custom color. Now this is a thread made for helping not talking down on. My sub works fine the dust cap just looks like crap. Oh yeah I already admitted my mistake and learned from it. Please offer advise and don't state the obvious.

Okay so I'm going to recone my Q series to a dual 1. Its an older Q d2. I'm running a mmats d300hc to this woofer in a closed box about 2.5 cu ft. I love low bass. I want a recone config good for everyday driving and music. Mostly rap. Go with flatwind? Or copper? I want some leeway to have some fun so should I go with bp options for cooling? Enclosure reccomendations? About to order this shit tonight confirmation in the forum would be optimal

Im driving a Dodge dakota extended cab and im going to be running 2 12" fi q's. I was wondering if it would be better to face the subs towards the front of the truck firing at the back of the seats, or firing towards the ceiling of the truck. Thanks in advance for any help!

Currently I am running my 2 15" Fully loaded Fi Bl's (flatwound coil, cooling, p chamfer) off 2 1500ds. I am about to buy some 18"s. They have cooling and flatwound but no p chamfer. How different are the 2 gonna be in handling since the 18" ones dont have the p chamfer but my 15"s do.

I was wondering to expand my knowledge and thought others here would benefit from my ever growing thirst for knowledge... i thought i would ask to help myself avoid these problems and also help educate those that aren't aware of these issues and how to avoid and/or discover the following problems.. Anyways.... as it pertains to sub woofers (particularly Fi built ones since i own some) 1. What is mechanical failure? 2. What are signs of mechanical failure (sight, sound, smell)? 3. What are the most common reasons for a sub to experience mechanical failure ? 4. What is thermal issues/problems in regards to sub woofers 5. What are signs of Thermal problems/issues (sight, so…

Hey guys right now I have 2 12" ssds running off us amps 4000.1 (1500 rms) and the subs are in 2.5^3 ft per sub @ 33 Hz. The box is just soo big and so hard to deal with and I want to build a sealed box and see which i like better. Is it normal with this large of a ported box i have a very weak upper end?? I want to put the ssds in the best suited sealed box. I have an avalanche and the box goes in the bed so i have plenty of room. I was thinking somewhere a long the lines of a sealed box around 1.1-1.3. You guys know these subs the best so if you were going to build a sealed enclosure what deminsions would you build it to. I have plenty of room so it doesnt matter how wi…

I bought a fi q 12 last year. I bought it with the intention to put it in a ported box. I have a genesis, the box is wayy to big for my trunk. I kept the sub in my garage until now. im planning on making the smallest sealed box possible for the sub, which i beleive is .8 . I selected a whole bunch of options, cant remember which ones though. Are there any options on the fi website that says the sub would have to be exclusivly for ported boxes? I know they have the high qts option, for sealed boxes. Im not too good with all these subwoofer terms, lol. I just want to know if i can put the sub in a sealed box without worrying im going to mess the sub up.

i only have about 2.0 to 2.2 cubic foot to work with before sub displacement and port displacement. i know the 12 calls for 1.8 to 2.5 before displacement so i was wondering if it would be better for me to run 2 10's sealed and be more efficient instead of trying to squeeze in the 12 ported edit: sorry i hate this computer i meant 2 10 sealed or 1 12 ported sorry . . .

i've been reading about the whole tinsel slap thing and it's kind of scaring me... i got a single 15 hybrid transmission line built by stratusrt01 a few months ago, he okay'd to me that sub a btl would work fine in there, are their any plans in the future for any upgrades to the tinsel leads? i was thinking of getting a fully loaded 15, the car is 2002 caddy deville, the box is stout as fudge, resin on the seams, i'ma 250 pound dude and i jump on it all the time, and it's rock solid. i dont do music for the numbers, i just a daily beater, just trying to get some feedback from the people with experiance. Thanks in advance fellas.

What are some good amps that can put out 1600RMS at 1 OHM. Please post the price of the amps if you can. Dont want to spend to much.

What si the Zmax of the SSD 15.. Also if you can tell me other Specs that are not listed on the site.. that i will need for designing let me know thanks

Hi guys, need help on box measurements, such as specs for depth, height, length, port size for my ssd 12" in a sedan for trunk firing, thanks in advance

Is a boxed tuned to 34 good for the BL?

Hello. I have a 1999 Dodge Ram 1500 regular cab, and I want a "system". I have figured up that I have about 1.7-1.8 cubes of space behind the seat. I was originally wanting 2 12's, but I would still like to have the massive amount of storage space that Dodges have. So I was just wonding if I could fit an SSD 15 behind my passenger seat. The top of the box will be 6.5" deep, and the bottom will be 10.5" deep. The reason for going with a 15 instead of a 12, is just for the coolness factor of saying, "Yeah, I've got a 15". Thanks for any responces!!!

im doing an instll in a 88 s-10 blazer for 2 12" ssd's for everyday use tuned around 33 what type of box do you guys think will be best? i was thinking about a crx type box but what size box/port should i go with?

Ok so Fi recommends 2-2.6 cf for a sealed 15 Q. The Khaotik sealed 15 box comes in at 2.769 cf. So will I be ok to run a slightly bigger box or will I run into any problems. Cus that really doesn't seem like that much of a difference to me but just wanted to check. Thanks.

I currently have a Q12 in a 1.35 sealed enclosure powered by a Cadence TXA-1000d. It sounds really good right now, but I cant help but think this sub can handle a couple hundo more watts on a constant basis. Am I right that it can handle more or is it just wishful thinkin?

I will be building my first custom box for a Fi Q15. I will be putting it in a 1994 Toyota Camry. The cargo space is 14.9 cuft, I will edit my post later knowing the actual dimensions I know there are a lot of experts on this forum that can give me some helpful advice on how to prepare the box and how to correctly brace it. I have used a layout generator online and I was wondering if these dimensions were suitable for it. Net Volume: 3.3 cubic feet Tuning Frequency: 32 Hz Port Width: 4.75 inches Port Area: 78.375 Square Inches Port Length: 55.25 inches External Dimensions: 28 wide x 18 tall x 26.75 deep. Color Count Width Height Top/Bottom 2 28 inches 26.75 inches Red 1 2…

i have a FI bl 15,cooling,daily, universal d1, im (thinking of) adding another bl to my car (not like i really need it ) but is there i could wire 2 d1's down to 1 ohm?( wouldnt it end up at 1/4 of an ohm? or 4 ohms) i don't think you can but, hey theres always hope(or none) but i was thinking about getting an excessive amperage alt like a 250 amp, run 0g wire front to back add a kinetik battery all KnuKonceptz wire, with maybe a crunch or hifonics amp Ideas or comments?

ok, well my box broke today, so now i have even more incentive to build a new one. this time i plan on using aero ports that way i can change it out from a daily driver to spl... im not sure how big i want to build it this time, what would be the pros/cons of building a bigger box, say around 5 cubes compared to something closer to 4.

Hey so i want to tune my box to 32 hz. but i am confused on how this whole box design works. The previous systems that i have had i just bought boxes, but this time i want to build my own. I drive a jeep cherokee so I have plenty of room in the back end for a big box. 1 12" Fi Btl sub. Dual 2 ohm, fully loaded. Brand new. (I have not purchased it yet, but when I do, this is what I am going to buy) Wheel well to wheel well is about 42 inches. Back seat to back door is about 25 inches due to my seat coming out at an angle. (I lose about 8 inches) The floor of the back end to the roof is about 38 inches. The floor to the top of my backseat is about 18.5 inches. Here are some…