Fi Technical

hi, i just receive my BL and noted that there is a plug on the pole vent. Shall i take it off? here is the pix : http://s291.photobucket.com/albums/ll314/_...nt=DSC00241.jpg thanks.

building a normal box but using two layers of 3/4 mdf all around, which way would be the strongest? i know the first would be the easiest with less cutting, but would number 2 be so much stronger that i should definetly go with that method? Number 1 Number 2 any opinions are appreciated!

i have a 15" btl fully loaded. i want to compete in bassrace and maybe just for spl burps wise. i have about 5 cubes to work with. i kind of want the box to move alot of air for shirt tricks and hair tricks. is it possible to get high numbers with the two i want to compete in and still move alot of air like others do with this sub. just curious

would one of this be good or two for a pair of 18Q's...?any other suggestions on an amp is welcomed. http://www.woofersetc.com/index.cfm?fuseac...Product_ID=1818

So I just bought my new car, a toyota celica, and I am going to have a custom box built for my q 18. with a kicker zx750, how many cubic feet should I go for? I am looking for a flat frequency responce and a good balance of sq and spl. I know these are all really rough terms but I just could use some advice.

outter box dimensions are gonna be 58" deep x 46" wide x 24" high using two layers of 3/4 mdf all around (1.5" sides) gives me 28.7 cu ft before displacement assuming displacement is .26 per woofer lets call it 1 cu ft my plan is to use six 6" aero's to start with i am aiming to get at least 25 cubes net after port and sub displacement (assuming 1.5 cubes displacement for 6 6" aeros 15" long) i NEED this box to be LOUDEST at 44hz, so i'm guessing tune to around 40hz (not sure) its gonna be only for bass race and shows, i wont be driving this setup around town everyday, but i still will be playing music, mostly rap and not much in the 30-40hz range. dimensions are pretty…

I have a Fi Q 15 with BP power in about a 5 cuft box. 3.5 for the sub and the rest is displacements for sub and port. I have the box tuned to 31hz. I read the recommendations for the sub off of this forum and it says about 12-16 square inches of port area per cubic foot of volume. So that would translate from 42in-56in squared of port cross section and i have about 48 inches squared (its 13.75in W x 3.5in H x 36in L) and not very much air is moving through the port and it is not very loud. Maybe it needs more break in time? Thanks

When I took out my subs I found a brownish materials on the sub terminals. Upon inspecting, I suspect the glue from the cone to the surround is melting. Is there any reason to it? Also would any glue which is strong enough would fix this. I plan to use the 10 minuted epoxy as its avaiable in anywhere in my please compared to the CA glue or the original glue that was used. Would the epoxy do its job without affecting any performance? thanks

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 know every car is different. i have a civic sedan 98. my btl is firing forward with the port forwrd. i was wondering will it get louder if i face everything towards the rear of the car.

alright so i decided i'm going to build my box sometime this week. i'm having a hard time using box calculators and i don't quite trust my results for some reason. the box is going to get crammed into my 98 corolla. i made a replica box out of cardboard and the box has to be 17" heigh, 20" deep and as wide as needed. the sub is a fully loaded bl 15 and i would like the box to be 4cubic feet tuned at 30hz. can anyone please help me? -phil

Ok right now I have the Q 15's and I've gotten used to them so I want to upgrade to the BL series. My question is, ok i want the same freqency response as the Q's have cause I like how they perform down low, but I need to know which options in the BL should I go with to have a good daily woofer? I was thinking of going with the cooling, flatwind, daily, and universal options because I am not looking to do any competing just some really bad street beating. But Im a little skeptical about the cooling option because it says that there is less metal in the motor thus making it a little weaker? So should I just go with p/chamfer, flatwind, daily, and universal because I dont w…

i need some help designing a box i have a 1999 explorer xlt 4 door i am running a 18"btl fully loaded daily on a fusion nv2500 my current box is 19h 24w 33d outside dim. with 2 6" pvc ports 15" long. ports and sub firing at hatch. i want to fire sub up and port back and change to a 30x30x16tall any help on port LxWxH would be grate!also any other input just looking to change up i was told sub up port back would be louder.

Optimal box internal volume is 1.1 after displacement, therefore, before displacement it would be 1.1 + .14 = 1.24 cubic feet. Would it be more advisable to buy a box that is slightly bigger than 1.24 and put something inside of it to displace volume or to buy a box slightly smaller and fill with polyfill? I'm finding boxes with 1.0 cubic feet and 1.5 and not sure which way to go.

can possibly pull this off? i have a 1975 caprice with a HUUUGE trunk

Just wondering what options I have to get this motor reconed. Are there any options I can choose to build a custom or hybrid sub or do you only have a standard setup for recones. thanks

Ok I've been trying to get my subs reconed for about three weeks now, I already know that they wont be covered under warranty because I overpowered them, but i have the money to get them fixed so if someone that works for fi could send me some info to get me on the right track, i would greatly appreciate it. Subs are:( 2) FI Q 15's D1 w/ BP power. THanks

I have two fi q 15 w/bp power that I need to ship in for recones. could you please send me the info that I need to go about doing this? do I pay before or after they have been fixed? thanks

I'm currently trying to design an enclosure for 3 Bl 10's i've got 1.85cu.ft of volume (total), with displacement. What sort of port area and length would i be looking at. Also, i can increase the volume slightly, as that is with 1inch MDF

http://youtube.com/watch?v=fU3nZ-l4vxg just curious my old setup was a 3.5 cubed box with 36" of port. the port was on the right of the box 2"x18" it was narrow. anyways my sub was in the middle both facing forward. it was loud it got really low and moved alot of air. the link above is my new setup. the lows dont really move alot of air like the old. is it because of having to ports. or is the box design not right. the only difference of the new and the old is the new hits highs very good it hurts your ears very badly. why do some people put there subs on one end of the box with the port at the other does that make it louder. i need help with a better box i think. i want …

Got 2-12" BTLs the old versions. Im trying to make up my mind on what to power them with between a AT-5000.1D or the AT-7000.1D. Its only going to be a daily blowthrough in a '97 Thunderbird. Which do u think I aught to go with? If I went with the 5K Id be saving needed space due to less batteries. If I went with the 7K its a $400 difference in price and Id have to get an extra rear battery on top of the ones I already plan to run.

Curious specificaly on the ''Q'' 18 w/bp

assuming both had the BP option and would be fed by a 2200 w rms amp, what kind kind of difference would i notice musically between the subs?

Just wondering... Does the Hixm coil has better efficiency in comparison with the standard BTL coil?What are the pros and cons when using the first in SPL /power handling/output? Is there any signifficant difference in the subs sensitivity? A few days i have watched some tests on some new quad stacked motor subs and i wondered if it would make any difference if the coils were put a little higher than they originaly ought to be put (like 4-5 windings were out of the motor top instead of putting all the coil in the magnet gap)

This is tuned to 36hz THIS is tuned to 32hz The 3 round ports are 6inch by 16.75L