Fi Technical

Ok, so I was wondering. A 12 in it's largest recommended enclosure, or a 15 in its smallest recommended enclosure, which has the more potential to get louder? Playing around with ideas here. Thanks, ~Trevor

room wise im stripping everything out of the back of my car and starting again.. the box in there is 3.5CUft with displacment to give you an idea on how big it is, i need some ideas of port and sub postioning which way to face them, where to put them? and general box design also some advice on the actual sub will be using for : Daily use 2000RMS @30Hz so what options would be best for the sub? Vw lupo thank you

Well, Im planning on buying my fi btl n2 18 aroudn december, near christmas! I have an 03 nissan xterra, so im sure there is enough room for a box in there, but the problem is, i barely know anything about sound systems and their setup/ configurations. If anyone could please explain what i would need, i would appreciate it. Im getting a new double din headunit, 2 door speakers w/ tweeters, (Which i will wire to the headunit) I plan on getting the n2 18 What amp, would be best to run this at its best performance daily? I won't be going to competitions or anything. If you can please let me know a couple good options that arent super expensive, i am not on an unlimited budg…

Hey to every one i would like to know the shiping weight of 15" BL its kinda urgent thanks for the help

hello I would like a design for a single with dimensions of 17H, 40W , & 18D Mmaybe alll the WAY to 22 but sub will be to close to trunk wall ... on you tube thers a design double port the guy has It on a civic very nice.oh and tuned to 33 to 35

hey guys, i would like to know what you think of this box, im a some what noob/mid level at box building SUB- ssd12 basic with maybe a flatwire option AMP- rocksford t500.1bdcd, the birthsheet on this amp say it does 810watts at 1 ohm, which is what i will be running it at. here is the box http://s1244.photobucket.com/albums/gg580/ott9311/?action=view&current=a1_zpsf9dcb1d5.jpg please give me any input u would have, i listen to alot of rap/hip hop so im tuning for 33hz i know im prob under powering the sub, but i thought in a ported box you could under power it by a LITTLE bit. based on my above state facts, should i make the box any smaller or bigger? more or less po…

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

I was just wondering which is best on the Fi Btl the dual one, or the dual two, an if order the universal what does it come set as or what? Please help me before i order thanks.

Ok guys I need a little input on a few things. First off, I was running two FI Q 15's off of a 40.1 @ 1 ohm in a 8cuft box ported to 28hz and blew one to hell and the other one's coil is burnt like a motha... So I was thinking of going with either one 18 BTL or two 15 BTL's off of the 40.1 @ 1 ohm. What do you think? Either setup will be tuned to 32hz. I was planning on modifying the current box if I go the 15 route, but if I go with the 18, the box will be around 7.5~8 cuft tuned to 32hz. This will be a daily driver setup.

Hello, today was one of the worst days ever, and what happened I thought never would, but it. So I'm here today to ask for advice. I was mounting the sub (15 fI Bl) and my hand slipped and ripped the outer foam ring around the sub. It's closer outside towards the steel ring where the holes are, and you can't see it unless you fold the ring. I managed to stop and retract and not run the whole screw drover through, but it did rip. Upon inspecting it closely I lost no material, it's just a 1/8 inch long tear. My question is this fixable? In been reading like crazy and can only see two common solutions. Silicone or superglue. I am leaning more towards the silcone because it w…

can anyone tell me how many watts i should run to a fi bl 18 and wether i should go with a dual 1 or dual 2 ohm.... and also what is the best hifonics amp to run it on?....

Ok, well i had no idea about tuning or anything when i made my first box. its 9.5 cubic ft with 90 in of port area, and i ran the port length till about the back of the box. ( pics soon). what i was wondering is can anyone provide me with the actual formula for calculating my port length. ( so i can just plug in hz volume and port area? ive got some calculators but like to see everything out. here is what im trying to accomplish by just cutting the box. 34 hz tuning 7.5 cubic ft 90in squared of port area if i my box in a 01 grand am running from my trunk to my back seat, with the btl right in the back seat and the port under it. if i put the port in the trunk would it mak…

Hello, I'm thinking about getting 1 18" bl sub pretty soon, so I'm designing the enclosure now to make sure it fits. I have a 2000 Crown Victoria Police Interceptor, so the trunk is pretty big. I want to do a sub up, port back enclosure, but I'm open to anything. I'd like to get it around 7ft^3. Here are a couple pics from a crown vic's trunk. I wrote in my trunk dimensions on one of them. They are (as accurate as I could get ) 26"D x 41"W x 20" H (13" clearance under the spare tire, 20" for the whole trunk) Heres a video with the kind of enclosure I would like to build Would this be possible in my trunk? Also, what dimensions should I be looking at for my port? I'm a…

My buddy is trying to put a 18" fi ssd fully loaded in the back of his eagle summit van.. He has about 1200 watt rms of power to run the sub.. There is two different set of max dimensions we can use ( it all depends on how tall the box will actually be. The first set is a tall narrow box and our max dimensions are 27 1/4 tall X 39 wide X 15 Deep. And the other set is 20 1/2 deep X 39 wide X 21 tall. Any help would be wonderful... Would really like start build on box as soon as we can.. Also I would like it ported wit a tune right around 32 hz. And I not sure wat would sound best wit the speaker direction and port direction so any advice is wonderful.

ok i have a box thats Height22.75 X Widht14.5 X 32.75Depth... i have a 15"fi btl wich calls for 12-16sq inches per cuft... i think i have around 3.5cubes in my box. port size would be 3.5x13 = 45.5sqinches now... i want to tune it to 32-34hz... how long should my port be ?? 26.5 inches long??? also all these number look rigth to you guys ??? i know the box its on the samll side but thats the biggest i could fit on my truck... please help me

Can somone toss me a few opinions on a sub box for a fully loaded Fi Bl 15. the max height of 16, with of 35, and depth of any. i used the 12volt.com port and box calculater. i typed in a 35 width,16 height, 16 depth. if came out to be around 4 cubes.with a port lenght of about 25, port with of 3inches i dont know if that right... i wanting to make a box for a tuneing of 30 or 32hz. i also used the RE calulater.. but it dont seem right... can some one help me out. toss in your opnion? i have a 1500 watt amp,i want listen to some bassy songs, mostly rap.

the dimensions of the room i have are 49"w 41"L 41"H. i was wondering if someone could give me a cut out of a box that will hit lows really good and move alot of air thankyou.

I haven't built it yet I am just exploring options and found a design I kind of like. 8 cu. ft. tuned to 34 hz with 101.25 square inches of port. The port opening will be 4.5 " wide and 21.5" long. The box dimensions are 33x24x27.5 overall. It will be a crx style box , and will go inside of the cab of a 2000 chevy silverado. I plan on pointing the port towards the driver's side and have the sub behind the passengers seat. Do these specs seem alright to everyone? Would a different direction with the ports yield better results? Does that tuning seem alright or should I go lower/ higher? I want SPL but also enjoy the low notes that a highly tuned box sometimes lack. If any…

Ok so i dont have much room in my car (well is a van lol) i have like 17" form my very back seat to the back window. Is that enough room for 2 15"s? I can move the seat forward like 7-8 inches if not more then i would have to take out the middle seat i would do that if its nessacery. So i will take pictures soon and post them so you guys can help me out tell me what to do. Im kinda new at this stuff so be nice. Lol

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…

I am hoping some one can help me design a ported box for a single 12" Q I am going to run it off of a DLS A6, 1200 watts rms x 1 @ 1 ohm the DLS amp only has a subsonic filter fixed at 25 Hz. The dimensions that will fit in the trunk of my 2003 Nissan Altima are: 33" Length x 14" Height x ? Depth is the only variable my front stage consists of DLS UP6 (6.5" components, mid in doors and tweeters in A-pillars) the front stage is bi-amped and ran off of a Tru Technology B-745 ( 100 watts rms x 4) my goal is for the sub to blend well with the front stage and to sound musical and dynamic.

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. will someone please give me the exact measurements of the port, width, height, length, and any other measurements i would need! that would be soooooooo awesome! thanks. or even better email me a sketch with all the measurements on it. my email is [email protected]

i just purshased 2 18" btls.i have 4 cf for each 8 cf gross for both.i want to tune the box to 36hz .can some one tell me how many square inches of port opening and the depth ofthe port that i need.thanks

Hello, This is my first time building a box. I would like to hear any thoughts you might have before I get to building. I just recently purchased 2x FI Q 12's dual 1's with cooling, and spider. I designed a box for a 2002 gmc envoy. These subs will be pushed by a Crescendo BC2000D. (May eventually upgrade to a 3500 or 2x 2000's). Box is 5.0 cu ft and is tuned around 32hz. Heres what I came up with. My main concern is if I did the port length correctly and if I calculated the bracing displacement correctly.

I have an 18" btl in the mail it should be here tomorrow, I totaled my truck a few days ago that it was going to go in so now I have to put it in a 98 mitsubishi eclipse for a month or so i'm looking at making a box L34xH24xD17 wich I think is about 6.9ft cubed so I would need about 75 square inches of port. how do I tune it to 32hz?