Fi Technical

Title says it all. I can build a enclosure with about 11 cu ft (internal volume, displacement of the subs has been removed). I read on a forum a while ago that you get the best SQ if you go with a big vented enclosure. I want to hit the lows but not to loose the highs completely. I listen to almost everything that's called music. That means from Queen to ATB to Bob Marley. My goal is SQ. The car is a Toyota Celica GT, this one: I will be using a Hifonics BXi 2610D amplifier pushing 2600W rms on to two Fi Q 18" subs. The optimal vented enclosure as I have read is from 6-10 cu ft for one, meaning 12-20 cu.ft. for two subs. Or 4-8 cu.ft. for a sealed enclosure, 8-16 cu.f…

I figured I'd start this topic because I have noticed there are a lot of people asking this questions, I even still have a few questions. The most common besides enclosure questions is those about how powering the BTL, so maybe this will be a good blanket to answer many questions. Q1. When most people buy this sub they don't have an enormous expensive amp to power it to it's full potential-as most people just want something to hold up good for daily use and don't plan on seriously competing with it. Being that the RMS is 2000 watts, is this the minimum recommended? Obviously 500 watts will make it play, but to see good results what is the smallest amount of power recommen…

Hey everybody, as you can see im a newbie lol but my question is im plan on getting a 15" Fi Bl w/ p chamber option and its going to be running off a Rockford Fosgate P1000 1bd (1000+rms) and i was wondering if I needed a new car battery or should i just hook up a cap to the amp

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$

Like the title says can i put a bl in a sealed box. I know it recommends a ported box but why cant i put it in a sealed box? thanks ps. I already have them before when I had space for a nice size ported box.

it doesn't make sense, when i chose the p chamfer option it added $10 then i chose the cooling option too and it doesn't have a price. and there's a note that it i chose both p chamfer and cooling, uncheck the p chamfer because p chamfer is incuded in the package of the cooling. in short, if i get both options, the p chamfer and the cooling, i will get it for free, but if i only get the p chamfer option, i need to pay addtl $10 for it. can someone explain this for me, thanks. i'm also planning on getting the universal option, my question is, if i get this option will there be any changes in the performance of the sub? or side effects?

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

I've been E-mailing Scott from Fi Audio back and forth but it usually takes a while for response and i realize hes bussy at the dB Drag World Finals. I desperately need these specifications for my Fi X 12s. LE in Mega Hertz- Z in Ohms- PE in watts- Ive been trying to get this info for weeks now so that i can finally build my box. I would really appreciate it if someone could help. Thanks, Ben

for my next setup i was thinking of doing an 18" btl out of a 2002 pontiac grand prix's trunk on a sundown 3500d. it seems thats what everyone likes to pair up with the btl. this is for a daily system. and the box would probably be like 6 cubes tuned to mid 30s. is this a solid setup? how much wattage do u guys think it will actually see after impedance rise? should i just get a 2000 watt rms amp or roll with the 3500 like i was planning on? and i know this is a difficult question to answer, but does anyone have any experience of any setups like this playing out of a trunk? obviously it all depends on the install and blah blah blah, but i was figuring id make somewhere ar…

i was wondering if you guys would help me get my port lengths and areas down. i just reciveved my btl 18" yesterday and looking to build the box right now i am looking at having a 7 cu ft after displacemnet. i alos think i want it tuned to about 32 hz. i t will be square port

So as of right now i have a Q 15 powered by a BXI 1606 running at 1 ohm so the sub is dual 2. My next goal is to get another Q 15, but I really want to get a RF T3000 but they would have to run at 2 ohm and be dual 1's right? So i would have to recone my current one or 2 (if everything goes right) to run at 2 ohms. But then agan if i end up w/ 2 dual 2 Q's i could just get 2 RF T1000's I just need some advice -send in my current Q for a swap and get both dual 1 so i could run the T3000 -keep my current Q a dual 2 and run each off T1000's How much actual power do the T1000's put out? Do these hold up to the other T line? I know a T3000 would be very generous for 2 Q's but…

Someone with a lot of experience might be able to tell me what the results of my plans could be? I really don't want to make another huge box a month or so from now, and wood is expensive, so I was planning on building a 20cube box @ 32hz for my 2 btls 18s I have now. In another month or so I plan on getting another 2 btls, which I could simply cut 2 more holes for them and use the same box. does this sound reasonable? I'm sure the first two subs would be OK with that much space, but will there be any real negative effects to doing this? I know there will be a slight change to the specs after the displacement from the subs, but it will only be around 1/2 a foot. Thanks a …

The inside of my box is 11.75H x 20D x 37.5w I will be using 3 4" Precision Port I cant change anything because the box is almost done and its waiting for the subs to get here. If someone could tell me how long the ports should be to tune to 32 thats what I need to know. Thanks guys

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Anyone here running about 140 db on a single Fi Q12? What amp and size of box did you use?

I know that Fi recommends ported for BL's, but for space reasons, I'm wondering if I could do a BL in a sealed box with one of TCSounds PRs (passive radiator). This will be running off an USAmps 4000DE (1600wrms). For space reasons, my plan was to go with a 12" BL in a sealed 2.5cf box, with a TCSounds 15" PR (or VMP as they call it) http://www.parts-express.com/pe/showdetl.cfm?Partnumber=293-682 http://en.wikipedia.org/wiki/Passive_radiator_(speaker) For those too lazy to click on the PR link "Passive radiators are used instead of a reflex port for much the same reasons—to tune the small volume and driver for better low frequency performance. Especially in situations i…

I am interested in purchasing the BL 15 and I have a few questions. It says that the RMS for this model is 1000 watts. I noticed that steve meade has 4000 watts RMS to his BTL's. Does that mean that the BL series can take 2000 watts RMS and still function as a daily driver. How is this possible for steve meade when the speakers are rated at 2000 watts RMS or does he own an upgraded version?

I have been looking at getting a fi bl 15 for my 2002 nissan sentra and was wondering if i could fit the box needed for this sub in my trunk? Also what options should i get i want the real low deep kinda bass? and what amp would be best for my budget i would like to stay under 500 for the amp and im not sure which would be best for me and where i dont have to do the big 3 any ideas or help would be great thanks

I am getting the 15" Q w/bp power but my amp is a profile ap2000 and only puts out 960 rms bridged at 4 ohms. How can I hook up another amp so that I have about 1500 rms going to the sub and also some new 6x8's that I will be putting in?

Adrie Brahma MK I Motor can it be reconed from fi? thanks

I'm just curious, what in the heck is the cause of my Fi SSD 15" terminals on basket to melt? I've think It's killed my amp - A kicker ZX1000.1 with little warning. I had everything wired correctly and it's been bumping flawlessly for several months when last week I noticed my amp was off. I started looking over all my wiring starting from the hood, to the amp, to the sub. When I pulled my sub out I noticed on one side of the coil the positive and negative, well rather the positive melted towards the negitive post and caused a short. Im just curious as to what caused this? I'm still running a stock alt in the car and I know the kicker amp drawed alot of power to whe…

Hey guys, Finally ordered my Q, 15" w Cooling+Spider... so pumped! but now I have a dilemma I have ported box that is built to the specs of 3ft. cubed @33hz, but wanted to know if I will hear any audible difference by going to a 3.5cube @33hz? Is it worth it for the Q? Goals are just to have the loudest setup given my amp (1500d sundown), sub, and trunk space Just wanna know what, if anything, i would be missing out by keeping the box at 3 cubes thanks

need recones desperately I can best be reached by email [email protected] or at night time ( eastern time GMT -5hrs) im on MSN till about 12-2am same email addy please respond as my email has not been replied to... I know u get lots... or just pm me a phone number I can call

the thread is much more developed here http://www.caraudio.com/forum/showthread.php?t=265327 but i will post here anyways, since i would like to get an idea of what some new tinsel will cost me so i can try to do a repair. so my btl stopped working today when i was listening to it on volume 35/70 on the highway. i thought maybe my wires came loose. get home, pull out the woofer and this is what i see at first glance i thought i clipped it. i take a look at the coil...its fine. never smelled anything either and everything is in the same condition as when i recieved the sub. and the other tinsels dont look burned to me at all. i am the third owner of the sub. it does loo…

I own a 2003 Mustang GT, and am trying to get the best system I can in it. I have VERY limited trunk space and so chose a single fully loaded 12" BTL powered by a Kicker ZX2500.1 (2500 watts RMS into one channel @ 2 ohms). I also have a kinetic 2500 in the trunk. The trunk opening is too small to get any sized box thru so I'll be installing it thru the back seat. The opening is 13" high by 32" wide, and 28" deep. I'm looking for a ported box to get the most bang out of the sub. Anyone got the best design for the BTL with the max dimensions (13x32x28)? Thanks.