Fi Technical

Finished the recone on a fully loaded BTL 15 today and this thing sounds even better than what I wouldve ever guess... I have one question though... I brought the sub to a friend who owns a shop to get the recone and after playin it a bit... Pulled up to a friends house and noticed the dust cap fell off, so I bought some more epoxy 5 min loctite and put it back on no problems. After expecting my little glue job the dust is maybe 1/16 of a inch off from where it used to be. Will this hinder the subs performance at all? Its sounds fine to me, still loud as chit...(My wife said it sounds like a machine guns going off in the trunk.LOL) this is only a temp system... Next syste…

ok built my enclosure, 40w x 15d x 10h external dimensions w/ 3/4 mdf port is 10h x 4w x 21l im getting different answers on cu ft, what did i end up with when all is said and done ? ive been out of this for so long i feel like an idiot with all the questions, but you guys are a really great help. THANK YOU

So i picked up my 18 inch btl with hiXM coil and cooling options(DAILY). Now for the amp. Normally i would say that i don't have the money for the SAZ-3000D, but i found it online refurbished for the same price that i can pick up the Rockford Fosgate t2001BD from sonicelectronix. I read a post from a guy who got the refurbished SAZ-3000D and he claimed that it was functionally perfect so i wouldn't mind purchasing it. both are about $560. I plan on doing all the elcetrical upgrades necessary for either of these amps (big 3, Kinetic hc2000, high output amp, all that good stuff) now my only concern is that my sub is the dual 2 ohm and i will be running it down to 1 ohm like…

I am a noob set on getting 2 15" BTLs but I don't know if i should run them at 2 ohms or 1 ohm. The problem is that there are not many amps that support 2000 watts unless at 1 ohm. If there are any suggestions for an amp with adjustable subsonic filter, that can run @ 32hz+, for 2 15" 2000 watt rms subs, PLEASe let me know. Thanks

hello guys, ive been a member for a while and have read tons of information on the Fi Bl and im ready to pull the trigger on one, but im stuck with one question. I've viewed the cut sheets that are located as a pinned topic, but i was wondering if i could make a slight modification. Since i will be building the box as a center console in my crew cab truck, i will be downfiring the sub and wanted to move the port to the side firing forward. The only reference i can think of on how i want the box to look is like the DD high efficiency box with the side port. Now my question is, am i correct to think that it will be fine and that all i need to make sure is that the port len…

i currently have a 1997 mercury mountaineer with 2 q18's. i plan on walling it off behind the second seat with 4 q 18's. heres the problem i run into...the depth from top to bottom of the center of the back is 37.5-38 inches tall. but at the very back where the hatch shuts it drops to about 30 or less inches roughly. how would i go about building a wall with the subs on the same plane and port as well. i wanted to do the port in the middle with a pair of 18's on each side. but how would i get my box in. i want to avoid the pacman style boxes if at all possible. please help thanks. i know there are others out there with their explorers which is the same thing running 4 18'…

i seem to recall either FI or a member on here stating to use a Bl or BTL cut sheet for the SP4. i am getting my recone soon and want to build a plane vanilla box tuned to recommended spec to see what it sounds like. what cut sheet should be used with the SP4?

Can someone post some pics of the extreme leads? I'm curious to see what they look like lol.it would be greatly appreciated.thanks!

Hi im gettting a 12" q and i was wondering if this could be done? I just dont want to worry about tinsel slap and i kind of like the look better thanks

I have a 2006 Nissan Sentra (1.8L) that has the stock alternator putting out 80 amps. I am looking to soon be running 1200 watts RMS through the system. I know I will have to do SOMETHING with the electrical system. But what? New alternator? Extra battery? (Big three is a given) If new alternator, would the one in the link below be suffice? (20 extra amps) http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=120530973171&viewitem=&_trkparms=algo%3DLVI%26its%3DI%26otn%3D2&category=33573

Since both the Fi BL 12 and BL 15 are 1000 watts RMS, and I have about 1200 watts to play with, which should I get? Would there be a huge difference? And on a completely unrelated note, how do you guys go about bolting down your enclosures in your trunk? I have a 06 Sentra and below the carpet in the trunk is the spare with a piece of cardboard over it. Now there is about a foot of exposed metal running down both sides of the trunk. Just curious about how it's done. *Guess I should have asked first, will a box for a 15" BL fit in the trunk of a Sentra? Thanks.

Me and my friend are about to hook his car up with some Fi subs. We are unsure of what really seperates ported from sealed and how power makes a big difference. Right now we are lookin at 3 Q 10's sealed, 2 Q 12's ported, or a 12" BTL ported. Q's will get 1k watts each, the BTL 3k to 4k watts. We listen to everything from heavy metal to rap. What we are lookin for is a rough idea of how each of these setups will differ in every aspect. I know it sounds like a lot and we are grateful for it. He says he may wanna compete in something with it later, so that is something we need to keep in mind. Any help or suggestions would be great.

ok so i have a 15" ssd with copper coil and a us amps md 23 i ordered a audioenhancers ported box for it that was close to the required specs, but i got sent the wrong box. the one i recieved lookes to be 2.3ft at anywhere from 34- 38hz area will this work or is it going to be to small???

So here the deal i just came up on two 12 inch D2 Fi Qs. What to do? i have a 3 cube net box i have that i made to fit under my seat in my truck. ported@35 Im just using the Q or Qs untill my SA-8 come in from sundown I have good electrical and will be run off a SAZ-1500d. The question is should i run 1 Q ported in my box at 1 OHM or seal my port and run both at .5 or 2 OHMS. Im looking for loudest. I know Qs arent for LOUD applications, but this system is temperary just to hold me over.

I am selling my MD2, and I have a 40.1 sitting there for when my 2 other Q15's arrive and get installed. My questin is... If I am careful with the gains, is it ok to run only 2 Q15's on a 40.1(rated @ 3600w rms @ 1ohm)? Or should I just wait until I get the 4 pack installed?

ok guys im gettin a box for 2 BTL's fully loaded...anyone have any ideas bout where to tune it to and how big of a box??? thanks

someone on another forum posted about more thiele parameters then wats on the site says he wants to know everything plus motor strenth can yu guys help out

ok this is what's up I have an mmats d3500.5 I can buy 2 more or 3 massive p3000.1, already got 3 kenetik 2400's to add to the 2 1800's under the hood. I plan on putting the 3 15's in a fiberglass wall like the old JL audio 3 10 set up approx. 7-8 cuft per sub, so what amps would you guys suggest. Oh getting 3 massive's or 2 more mmats would be about $100 doller dif.

Hello, I'm planning on building my first system and I am wondering what specifications I should get on my FI 15'' BTL. I want to get it to 1 ohm, so would I go with dual 1 or dual 2? I am going to buy an AudioQue 2200D, it is 1 ohm stable. I am going to do the Big 3 once I buy a new HO alternator. Any tips and/or advice would be greatly appreciated.

I need your help guys..... 1. Sealed or ported? 2. Does any one have a pre-fab box that works well? 3. Does anyone have box specs that I could duplicate?

I am planning on ordering a 12" Q sometime soon. I have the design for a 6th order parallel bandpass enclosure. Tuning is 2.5 cu ft @ 32Hz and 0.590 cu ft @ 74Hz. My Q will have the cooling option so it will have somewhere around 12-1500 rms. I will be powering this by my SAZ-1500d @ 1 ohm. This is going into my 2000 Celica. My question is do you guys think I need the extra spider? The price is not my concern (just $5 difference). But I heard this option takes away from SQ, but I also heard that if you go over rated power on the Q, you need to add an extra spider. IF i do get the extra spider, how big of a difference in the change of SQ? Any input helps

yes, i searched. my sincere apologies if someone has asked this before. i am planning on buying a single 12" D2 SSD or Q... which one is yet to be decided the amp is a hifonics 1206d, an alleged 1200w rms but closer to 900-1k probably. stock electrical + big three already built the box, ported 2.25cubes@34hz so.... i want to make sure the sub sounds good, i know both of them will get plenty loud for my tastes, but my main question is, if i get the copper coils does that reduce the rms rating of the sub? do the CC's really make taht big of an SQ difference? the reason i'm asking, is becasue the FW coils improve the power handling at the expense of some SQ, so i didnt kn…

Ok, so I already have a Fi Q that I have been bumpin for about 4 months now. I am planning on getting a second Q after X-mas. Should I recon my broken in one before throwing it in a box with a new woofer? Also, what would be the total price for a recon kit with is being sent to 95677. The sub is a Q 18

Hey, I sent in my sub over a month ago. I tried getting ahold of Fi to let them know I never included an email or phone in the package because I forgot. What's going on with my sub? I should have it back by now? TIA

I am looking into buying the 15 or 18. I would like to say that I would rather get the 18, but that's not true. I want to get whatever will promote the best response with my trunk size. I have a 03 grand prix, and the height of the trunk is only 17 inches. The maximum dimensions the box width and length can be are 35 x 30. My main question is if the surround of the sub is only 1 1/2 to 2 inches away from the lid, will that decrease my response? With the 18 the dimensions would be 15 tall x 35 wide x 29 deep with the port firing into the cab tuned at 33hz. Will smaller actually give me the most bass? I'm not worried about SQ, just spl... Thanks in advance! Any help and ad…