Fi Technical

ok so I have an old style 18" BTL w/ pchamf, hixmax coil, and 3rd mag.. i want to upgrade and have 2 18" BTLs but as you know they do not offer those options any more and Fi will not make me one with those options, already spoke to them.. if I buy a new style BTL with the newer motor and put it in the same box with my current BTL would that be ok? how will it sound if any one has done it ? and will i damage my sub? Thanks to everyone in advance, ****ty situation i really dont wanna have to sell this one and buy 2 new ones..

ok, gonna be fun fitting this in my grand am. removed the double fold backseat. and plan on put a box running all the way from the trunk to behind the driver seat here are some plans for the box its about 9-10 cubic ft right now. questions? shape dosent matter dose it? do u think ill need some more support? how big should i make the port?

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.

im thinkin of gettin this planet audio big bang 2 1400 that puts 1000 @ 2ohms ive read good reviews so this is just to seal the deal.......any info will help thanks

hey guys, if i tuned a box to 26.5 hz would it hurt the sub? ik fi recommends 28 but i like it a little lower than it is now. so im gonna build a new box, and tune it to 26.5 if u think it would b ok. ne help would b great. thanx.

I was wondering if someone could help me with box size/measurements. I have a Ford Explorer, I am going to be running a Sundown 3000d with this(Dual 1 BTL 18"). Space I have available, 40in Wide|30in High|75 deep(I don't use this area at all so it can be as big as it has to be).

So, i hate to be one of those bums that asks for help on designing a box. (help?? who am i kidding, i need full assistance) I have a Fi BTL 18 just sitting here teasing me while i earn my money for a refurbished SAZ 3000d. i thought as i was waiting, i might as well build the box. Space should not be an issue, i want this box to built for performance. It will be used for daily use. So my question is, what would you do? From my understandings, tuning at 32hz seems to be the mostly desired tuning frequency. Alternator and batteries are all taken care of, just down to the box. SO! if space was not an issue (cause its not! =] ), what would your box design be for a Fi BTL 18 w…

Recently I built a box that is 47 x 22 x 22 with the port slot it all comes out to about 9.3 cubes, i was wondering if any of the gurus could tell me if that entirely too much volume for 1 18" bl daily driver?

im new to the forum and im building a box for a 18"btl and was wondering how this sounded. 33W x 22H x 24D 92^2 ins port area 6.241 ft3 of air space im tight with room so hopefully this is a good setup. thanks

Im tryna purchase 2 Fi BL 15's and i have a power acoustik BAMF40001/D...Im wondering how I should wire the voice coils and would it be better to get a dual1 or dual2???...This is for daily use also

I was wondering if this box would be big enough for two 15" fi btls. The box is 38 length X 25 width X 23 height. After displacemnt of everything its around 7.5 cubes at 31hz. The port is 6 wide and 25.5 long. It would be for daily use and each ran a sundown 3000d. thanks for the help

hey i have a question for anybody who can answer, i am installing a 18 fi bl in my 01 sonoma my intent is a daily driver with occational spl comps. My box is 48 wide by 24 tall by 13 deep that comes out to about 6.9 cu feet i believe but i dont know how to figure my port size ? Needin some help

Hi everyone on SSA and Fi audio, i am new to this forum. I herd lots of good things about Fi audio, so iv decided to give there woofer a try. i plan on ordering one in a few weeks. im thinking im gonna get me a single 15" BL to start Fully loaded as a daily with 2ohm and universal option. Now my question is i need plans for an enclosure and also what should it be tuned to?..... I never tuned a box myself so i may need some step by step if its a complicated design. Thanks

how much would it be to recone a FI BL 18'' sub, like send it in and get it done? thanks chop

where is the optimal placement for the sub cut out. i went a head and am building a box for my single 12"Q. and it's just a basic little 2.36cuft @ 31.69hzported box. i got to thinking before am going to make my cut out for the sub. should i put the sub closer to the port? or dead center? or away from the port? what are the advantages and disadvantages of each? and what would you recommend? also the sub cut out should be at 11.7 inches right? on the website i got that from the cut ID number. thanks guys

Whats up everyone. I'm new to this site and im looking for some help with my box build. I just got a Fi Bl 15 dual 1 fully loaded and i am wondering what dimensions i should use to get the most slap outta this sub. I went to RE Audio and used there box calculator and came up with: W: 38" H: 18" D: 17.5"... Port width: 4" port Length 12.75. Second port length: 16"....with 4.2 cu ft. in total for volume. Box is Tuned to: 31.63 hz Does that sound alright? Also im buying a Hifonics BXi 2010D to power the BL so id be giving it 2000 watts. Is that to much? Let me know what you guys think. Thanks

Is 324sq in per sub too large for a striclty SPL enclsure using 4 Fi BTL 18's in a 32cu ft. box

Foreward fire in a trunk, which of these three boxes are better. The smaller the box the closer the back of the box is from the back of the sub. All are from RE's box calculator. Each box has 16 square inches of port per cubic foot, the first two are off by -.003- & +.008 sq in. The box is 23-26 deep, is that bad for dampening? How far should the back of the magnet be from the box? 2 Fi BTL 12" 4-6kw @ 1ohm 2.46 cubic feet each @ 34.75 HZ with 78.75 square inches of port, box face is 17 x 37. Port 5.25 x 15. 1" MDF/1.25" spacing. 2.719 cubic feet each @ 32.78 HZ with 87 square inches of port, box face is 16.5 x 37. Port 14.5 x 6. 1" MDF/1" spacing. 2.8125 cubic feet @…

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…

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]

alright so ive had my 12" bl and sundown saz 1500d in a 2 cuft box wired at 1 ohm for about a week now and its not as loud as i expected. its a great sub dont get me wrong but it really doesnt get loud unless i turn on my loudness control on my headunit to atleast low and turn my eq settings on super bass... but i thought i read somewhere that you should not do either of these things... i was checking out my box that i had custom built and the port area was only 3.5" x 4"... isnt this a little small? i thought the port area should be from 32-24 square inches since the box is 2 cuft. would this make my setup louder?

I am trying to construct a ported box for the driver’s console of a 2007 Malibu VLX wakeboard boat. I would like to install an Fi BL12 and push it with a Kicker 1000.1 amplifier in 2 ohms. The dimensions of the box I plan to build are as follows 18” wide x 18” deep x 18.5” high. I am going to use a PSP (Precison Sound Products) port tuned to 32hz. Is this box size adequate for this sub? Will this sub be ok in this environment? (ie. 100% humidity, maybe a few drops of water and a little bit of full sun). Any tips and advice would be much appreciated. I am use to building only sealed boxes, so ports are totally unfamiliar territory for me, but I’m willing to learn. T…

these are the amps i possible want to get depending on the feedback i recieve to run my SSD12D2 w flatwind coil option running in a 2.25Cu.Ft. slot port box POWER ACOUSTIK LFA1-4000D.......199$ Power Acoustik A2400DB....240$ POWER ACOUSTIK STAX4000/1D......215$

I have an old kicker 1200.1 amplifier but I'm not sure what Ohm stability it has and I'm wanting to buy an Fi BL 18" dual 1 ohm. My question is what could happen if I wired the dual 1 ohm woofer up to my amp and my amp isnt 1 ohm stable? And how can I find out if my amp is?

ok so i just bought an 18" fi btl fully loaded dual 1ohm....i originally wanted my box to be 40"x30"x20" with a port size of 10"x18" (which would pretty much take up my whole trunk space) tuned to 35hz ....but ppl tell me thats probably too big...its goin in a lincoln navigator...can anybody PLEASE just tell me if thats ok or too big or what it is that i have to fix to make my sub hit HARD! also how should i face my sub and port? i originally thought both up, but i heard sub facing up and port facing the rear is better, is this true? ok well first off i working with a hifonics 2000 watt brutus for now...hopefully a saz3000d soon...i listen to mostly rap but pretty much e…