Fi Technical

I recently just ordered me two 18" fi btl fully loaded and im selling my 18" q's to my buddy. What I need is a good box design for my btl's. My maximum measurements for the btl's box is 49"x20"x29". i currently have aero ports for my q's and im wanting to do a single chamber with a big slot port, subs up port back. And i also need a box design for my buddys setup, max measurements of 40"x26"x26", with the same idea as my box. so if there is anyone with ideas, let me know please. thanks

can someone please help me out here? i need a box design for TWO 12" Fi Q's!! tuned to about 33 hz. and the dimensions (height) should be able to fit in an 07 altima with limited trunk space or theres no point lol. thanks a mill

Forum, I have a unique situation and was looking for help. I have 4 FI BL subs but 2 are dual 1 ohm and the other 2 are dual 2 ohm. Can i run these 4 subs in the same enclosure and what final impedence will they have wired in series or parallel?? I have 2 Fosgate 2500-1bdcp amps that can be strapped together at a final load of 2 ohms.

At the moment I am really thinking of running 2 12" BTLs. I know this may be a dumb question, but hey, I am new and gotta learn somehow....anyway, how do the 12" BTLs sound. I have heard some subs where the 12" would sound horrible (imo) but the 15 sounded great....both in the optimum setup and tuning. Just like some subs aren't really recommended for certain types of enclosures or applications....is it ok to use 2 12" BTLs for a daily driver or would it be more beneficial to use the BLs due to application types.

I found these specs ~4 cuft net tuned to 32 Hz 16" h x 40" w x 20" d Port is 14.5" x 4", 30" long. To get 30", you make the side port wall so it extends into the box until it is 4" from the back wall, then add a piece 10" long running parallel to the back wall. Box is .75" thick, except the baffle is 1.5" thick. I made this in sketch up to specs I wanted to see if it looked right. besides the port being off the ground i think it is. I am new to building sub woofer boxes so any help is appreciated

thanks everyone need a little help i have a new bl 15 loaded, enclosure 4 cb tuned to 32 hz, im trying to adjust my amp and head unit settings for this sub ive tried several things but i dont feel that its right... the amp is a hifonics bxi 2008d mono, and the head unit is a pioneer deh p7900... ok now ive played around with it a little and to get decent sound (bass) ive had to set this amp to gain level 3/4 up, and bass eq 3/4 up, subsonic a little over half way, and low pass a little over half way... and the head unit settings hpf 80hz, (sla) all way up, loud off, sub 1 normal, sub 2 to +6 and im guessing the band thats on this setting with this is the low pass at 100…

What is a good program to use that can help me put my idea on paper? I want to have a setup with two sealed drivers in the back of my blazer (15/18 still undecided). I want to have them stacked like an 8, except I want the top one to be inverted this will be in a fiberglass box painted black with lightning airbrushing. I just wish I had a program that would allow me to rig a detailed example of what this would look like.... Thanks

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

Does any one know what the QTS becomes on the option of raising the QTS? I plan on getting a pair for sealed, but want to know what the QTS are. Also Plan to run a 1500 rms to each, should i get a extra spider? just dont want to lose the low end making it to stiff in a sealed box. input would be greatly appreciated.

Well, i've figured out that I can fit a 5.5 cu box in my trunk, now i was originally going to go with two 15" btl's but after taking measurements, it seems like my trunk would be more suited for two 12" btl's. My question is, which would sound better/be louder/hit lower freq's better in a 5.5cu ported box? they will be tuned at about 32hz Any help would be appreciated, thankss

friend wants to buy a BL 12 and place it in his car. he wants it even with teh rear seats so its a bit tall of a box. does this look proper for such a sub? http://imgur.com/a/IUDaJ

I may be getting a blown Q 18" in a trade with a gentelman over on ROE, I want to recone it down to a 15" or a 12" , probably a 15". The guy said Scott quoted him $75 for an 18" recone kit, how much is the 15" and the 12" recone kit plus a 15" or 12" basket.

Hi, i recently bought a recone kit for my Btl. It was a 12" and I am upgrading to an 18". I cut the surround and spider to remove the cone. Now, i see the screws holding the basket to the motor. Simple, right? Well i cant get the screws to break from the motor. They were soldered on to the metal. I broke the solder with a screwdriver, and now i'm left with six screws that WILL NOT budge. I really put some power behind one screwdriver and the screw started to strip on the top. Any ideas?

I've got a couple IB 15" for home theater use. I was wondering how these would sound in a panel van. With a VAS of 270 I figured I'd make a 10 ft^3 sealed enclosure for each and give them a try. Anyone have any input?

what kind of enclosure am i looking for? i have a 1995 lumina, and now im seeing what kind of box i should go for. ( i have a very large trunk. ) i think my MTX JH55 is a 4 cube box. and i still have room for a little more, could someone post the exact and best enclosure for the FI BL 15? and is there any very good box builder for xp or vista? also could i get exact specs for the 15bl with cooling, daily, universal, and a red dustcap. ALSO would a hifonics 1200ixd amp wire at 1 ohm be ok to power this amazing sub?

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.

This is my first real system and I plan on running 2 10" FI Q's with a Sundown Audio SAZ-3000D. I have plenty of experience with woodwork, but since this is my first real system where I'm building my own box, I need some help with that. First off, originally I was planning on facing the subs inside the car and seal off the rest of the trunk. It's a 4-door and I can't really remove the back seat, but the majority of the time the back seat is down anyway. However, after reading a bit more I've heard a lot of people mention and tests done to show the subs may actually be louder facing the rear of the car. What do you guys think the optimal setup in my car will be? I'm drivin…

I am running (2) of the 12SSD's in a ported box at right about 4 cu. ft. net and its tuned to about 32 hz. power is rated Zapco 1000W if I can get another cu. ft. What can i expect in the characteristic of the box? More efficent? more boomy? I do not want to make it sloppy, it's already ported which is a trade off for me to begin with. Or I might consider the max sized sealed box. How would you compair that to my existing ported box? thanks

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.

Scott, I just want to start off by saying thanks for the fast delivery of the recone for my sub it made it here in time for me to take 1st at usaci show in Omaha with a 141.7. But, now I need to build a competition box tuned to around 43-48Hz since my car is tuned to 45Hz. any help with this would be great. My email is [email protected] for box deminsions and print off sheet. Thanks again for all of your help.

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

Forum, I have a SUV and my setup is 2 BL 12's in a shared chamber ported enclosure tuned at 33hz. I was wondering would the subs sound better facing forward or to the rear of my SUV tailgate? The subs and port are on the same baffle. Right now i have them facing forward and it sounds really good but just wondering am i losing out on that chest pounding bass if they are facing the rear?

Hey guys im looking to try out the maxx link but i have a question for ya. Im gonna be running 4 kicker zx2500.1 amps and 2 18in Btl dual 1 ohm subs. The zx amps are 2 ohm stable and i was wondering if there is any possible configuration to have the amps see a 2ohm load once strapped. Also would i be better without the maxx link and running each amp to each coil? What ohm loads could i see there. thanks

I have a 12'' fi Q and when i got my box built the guys put a separate wire on each voice coil. Its a dual 2 ohm sub. What is the final ohm i am getting once i connect it to my amp?

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