Fi Technical

Ok I am about 10-11 months from buying a 2009 Mini Cooper S (waiting because I will pay cash) so I have started my plan for the low end. I have a 10" BL on the way and plan to run it of of a Fosgate 25 to life Punch 150 (birthsheet states >800w rms) I want to keep the box small but want good bottom end I am looking at around .5- .7 ft^ Has anyone run the BL in a small box like that? Any problems or chalenges? I can go larger if need be as the car will not be a grocery chaser but my commuter car BUT I want to still have space in the tiny trunk area for the times the wife and I need to put something back there. As you can see I have time to change the plans but the BL is…

I'm in the process of buying a 15" BL within the next two weeks. i was going to pay someone to build me a box, but its going to cost +$200 and take well over 3 weeks for him to build it. so i decided to do some some research (and save some $$$$) and found two enclosure plans that fit the 15" what one should i build? the first design or this one Net volume: 3.5cuft Tuning: 33Hz Port Area: 52.5(15"Hx3.5"W) Dimensions:16.5H"X24D"x26.5W" *design stolen from ROE. Another question, Its a fully loaded 15" Bl powered by a rockford fosgate T1500-1BD the amp is rated at 1000W x 1 @ 2-Ohms RMS 1500W x 1 @ 1-Ohm RMS is it safe to wire the subwoofer at 1ohm for daily play? i know…

Just got this with copper coils. What gauge speaker cable should I use? I was going to feed it 700 watts RMS.

3 weeks and no replys to email. i would realy like to get the kit. thx

Ok i have two d1 q 15 w/bp power and when I first recieved the subs, they hit extremely hard but after a couple of weeks and a local comp, the subs just dont perform like they used to. when they hit the lows now the bass kind of fades away and sounds like a fart and they dont even put out the pressure like they used to either. I've checked the box first to make sure there were no leaks and everything is fine. I think the spiders have gotten weak cause they just dont "thunder" anymore. Time for recones right?

I need a box for meca event the 20th here is what i have to work with 18 tall 24 deep 49 wide please help i'm try to break the 50's sorry it's in a 98 tahoe

hi there just bought a fully loaded 15" btl. i used my original box that my audiopipe txxa-15bl was in. the box is 3.5"cu with 36 sq inches of port 2X18. the box is 3.5 before i put the btl in it so its actually less then that. i think the box is to small its in a 98 civic sedan. my wires are 4 guage i know i need to upgrade and a new battery and new alt. but was wondering if i could get a box design ffor maybe 4.5 or even 5 cubes design if anyone had it for this sub. another thing what is a good line driver.

So there is someone selling a blown 15" icon and i was thinking of picking it up. I was wondering if I could recone it with Q coils and put it in a 3 cu fu. @ 32 Hz? Would this work or am i just thinking to crazy? also how much would a 15" Q recone cost to 94803? thanks

6 cubic foot ported box in the back of my 01 Jeep...Wondering about the size of my port and anything else that could help me. And also I was thinking about having a few circular ports...? Thanks for any help.

Hi all, I'm new to the forum but been in audio for some time. I posted earlier about making the change to Fi and Sundown. Great product! This is the old system, it is 2 Gain Industries GP18DVC2 subs running off an old school Lanzar Opti 50C, stock electrical. The best part: This box will work perfectly with 2 BL 18's, space, port and all. <object width="425" height="344"><param name="movie" value=" name="allowFullScreen" value="true"></param><embed src=" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object>

I've got a 2000 Frontier xcab and I've got 10.42 cu ft box for 2 18's to work with. I've got a saz3000d coming but I want to know if I should go with 2 BL 18's or 1 BTL 18. I'm thinking the 2 bl's would be louder, but the btl has better Xmax with the x coil option. I don't crank my system all the time( I have a toggle switch so I can shut the sub amp off-It's great for keeping the cops at bay) but when I do I want to incite fear and cure constipation from a distance. I want the hair trick factor and I want it to sound ok, not like complete chit. I'm looking for some serious BOOM for what space I got. It will be in competitions and electrical upgrades will be done. …

i was wondering if any one had any box specifications that they have built, and if you could pass the information along, im needing to build a box to fit in the trunk of my civic, only going to be running one 12 inch driver, and slot port, was wondering and anyone had any dimensions for a box, and port tuned to 32hz. thanks alot im new to this scene, so if i sound like an idiot, just tell me.

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

Lookin for info on the q18, you guys recommend 4 to 8 cubes for the 18 sealed. With ~1kw each would 5 cubes each be acceptable? I'm looking for them to carry into the upper range a little more so I'm thinking a smaller box would fit that. Toying with the idea of doing 3 of them sealed in my ext cab truck on a saz3000 for a bassrace/daily ground pounding application. I'm currently running an hdc318 on 2200w and it gets downright loud and I like the upper end response as well as the lows it gets, just looking to try something different. Always wanted to try a large sealed application that got loud both bottom and top end, just not sure if the q18 will do it, which is …

I have a 98 reg cab s10, i want to do either 2 10'' Fi SSD subs. I would like to know how many i could do and rather do it sealed or ported. Any help would be nice thinks

I have a 95 single cab Nissan pickup and want to put 1 10" SSD back there. I have buckets seats with about 10 1/2 - 11" of room between them don't have exact demensions and limited room behind the seats. If I have enough room I want a ported box but will use a sealed box due to the limited space. I also want to have a center console.

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?

Having 3000 watts on tap, which can be made louder in a large ported box? 4 SSD18's or 2 of the more efficient BL/BTL's? TIA, Carl.

I love my Sub and plan on purchasing another one but ever since i purchased my 18" SSD back in December i sort of drifted away from the forum and keeping up to date with everything that was going on with FI. I have read different articles saying there are new lines for the BTL and i think BL but not sure on the Q and SSD. Well anyways i plan on purchasing another 18" SSD soon and my first question is, is there a new line of SSD subs and if there is my second question is, will there be a problem if an old SSD is in the same box as a new one.

im new to this so what do they all mean? and i want to get two bl 15" so do i get dual 1 or 2 to get 1 ohm?

How much does the slug only, on the new BTL weigh? Also, how is the top plate and t-yoke manufactured? Is it milled, molded, cast?

alright guys i have just ordered a 18" btl 18 dual 2 ohm and was wondering what is the possible wiring options that i can run it at ( what ohm ) thanx.

i currently have 2 12" Fi Q's in a monochambered enclosure tuned to 32hz for maximum SQ but no amps from what people have told me (2x) sundown sae-1000d should be perfect but my question is... if both subs run 1000 rms each, would it be better running (2x) 1000 watt amps or (2x) 1500 watt amps??????????? also, which amps would be ideal if money wasnt an issue? preferably brand name and specific model. thanks a MILLION!!! NOW HELP ME BUILD MY DREAM SYSTEM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I'm Lookin for help with box design for a 98 chevy tahoe for 1 btl 18 i'm tryin to break the 150 mark i currently hit a 147.1 any help is appreciated will get demension soon

I'm new to the forums and i was interested in purchasing a 15 inch bl and running it in a ported box for loud bass. I'm not into competitions or anything like that i just like loud music. I've been watching videos on youtube and the realm of excursion and i think these subs are badass. Now to my question, if i purchased one fully loaded 15 inch bl how many watts could i put into it and be able to pound everyday in a daily driver without blowing it and which amp or amps would be best for it?