Fi Technical

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?

K, now I know what you are all going to say, BUT before you do please give this a read. I have a pair of BTL 15's (D2) that I am planning on running with a pair of SAZ-3000D's I know the box recommendation is 3-5ft^3, with the power, would I be better off staying on the smaller side? I know when you start going bigger the mechanical ability sub goes down, but the trade off is more forcefull bottom end (which I would like to have). I'm planning to have between 6-8ft^3 net enclosure tuned fairly low around 30-32hz Just curious as to what you guys think about my ideas

Is a boxed tuned to 34 good for the BL?

Is a btl capable of free air setup?

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???

I have the Beta version of WinISD. I put in the parameters for the 15" Fi BTL from the website and no matter what I do it doesn't work right. I more than likely have one of the parameters wrong. Does anyone else have theres working and would be willing to post a picture or something so I can see what I did wrong?

hi im waiting for my FI SSD12D2 and i have a soundstream XTA880.2 and im gonna bridge it to run a 800rms 4ohm load to the sub in a 2.4cuft slot port box i have a 4g wire from my alt to my stock batt and a 4g ground from neg post to strut tower and a 3 farad spl cap can anyone plz give me sum tips to maximize my setup...i have a stock 90amp alt also also i have the flat coil option on the FI SSD12D2. the amp will b @ 4ohm so it will b a clean 800 rms if im right ? any info will help so i can make any changes b4 it gets here

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.

This is the box I came up with, but just by the numbers, I don't know what the response will be like and how smooth it will be. Box: 44"x18"x20" (outer dimensions) and 37.5"x16.5"x18.5" (inner dimensions using 3/4" mdf excluding port) Port: 4"X16.5" slot on left 18.5" long That should leave me with ~6.6cubes before displacement and a ~33hz tuning. Subs are running off of my US Amps MD2 at 1 ohm. ~1800w rms What do you think?

Im ordering a 15 Q soon and am going to start on my box for it. I was messing with re box calculator and having a few problems getting the right size, i have limited space in the trunk of my civic. I am going to run it ported at around 32hz and would like to get as much cubic feet as i can out of my trunk, any help would be appreciated. Box can not be wider than 34 inches, can not be taller than 16 inches, and can not be deeper than 18 inches, any help would be a appreciated. The cubic feet part is easy to me but the whole port part and how long the port should be is confusing to me. thanks Also on the re box calculator site which number do i use to figure out the 12-16 s…

I have a excursion w/2 -18 Q's and want to know if i can tune them to 30hz instead of 28hz? and should i have the port and subs firing to the rear or facing up? all my boxes always had the port and sub on the same side.I would face them to the rear. I would face my box up and the bass cuts in half. Will this do same if i face the subs up and the port to the rear? I want to get the most that i can get out of subs and box. Any input....

Well I have a sundown 1200d I will be running 1 10 or 1 12 off of. This is going in a custom fiberglass box going under the seat in a 09 ram. I have alittle more than 7" mounting depth but as of right now only about .83 cuft of volume. I'm looking to extend that to around 1.0 cu feet if possible( and if I don't get the 10"). I have set myself on a fi sub but i'm not sure if is should go 10 or 12. This will be in a sealed box. I'm looking at the ssd and q series. For the 10" i'm actually over the recommended box volume already (.6 cuft). And for the 12 i'm alittle short (.8 cuft). What are your thoughts on what I should do?

Its almost time and Planning has started. I still need to find out if I can make a slot port work if not maybe two square or even aero ports. Suppose will have to do some maths and cross-checks. Draft box (not to scale) Let me know what you think.

OK, I'm going to buy 1 18" BTL today and I need to know what options to go with. I want to compete in SPL but I do sometimes want to be able to listen to music. I'm running it with a SAZ-3000 and I don't ever plan on adding another Sub. (I could never fit another) Yup so what options should i get?? thanks

hey all im really sold on getting a bl 15 for my car. i was just wondering how much it will cost to get it shipped to montreal since it states on the fi site that shipping only free in the states. im also wondering if the flatwind coil is good to get if i plan to use the sub daily (will it give much better sound).

does anyone know a phone number or something to contact fi about a question? ive tried emailing and it didn't work, they ignored me. i ordered a fi q 18" about a month and half ago and i noticed it had a black basket instead of gray, then i ordered another one a couple weeks ago and it had the gray basket and many differences. and just over a week of having the newest one, there is a popping noise coming from the sub as if its starting to go bad already. any comments just let me know....thanks.

So i have a friend who has two sp4 15's. He is trying to run them in a box that is roughly 4 cubes net after displacement. I keep telling him this is small for them but i could be wrong. His port is external. running it on a bc3500 Any recommendations to help him out would be appreciated.

I am looking to build an enclosure for my 4 12" fully loaded BL subwoofers and was wondering if 8 cubes after displacement and everything is large enough or too large? I want to tune to 32hz as well. Please chime in with any ideas if you have them?

This is my setup: A US Acoustics USB-2150 rated for 450 watts x 1 @ 4 ohms powering an 18" Fi Audio IB3 at 4 ohms. I have a seemingly solid install now, but my score has stayed the same, 132 and change on both the termlab and my spl labs lcd bass meter. Check out my build HERE. I decided to test the output of one of my sub amps. I tested with tones from 25hz to 65hz. I checked the AC voltage output of the amp. Simultaneously I checked the output amperage to the sub at the positive wire to the sub. With these numbers I calculated the wattage by multiplying the volts times the amps. I also calculated the impedance by dividing the voltage by amperage. This is what I got 25Hz…

all hooked up to a good electrical system should i run the amp at full tilt or dial back just wonderin if the sub will take it for a daily beating and last

I sent an email asking this but never got a reply. I was wondering if i could seal up a SSD 15? If so what would be an ideal size for the enclosure? I checked the specs under the SSD section in the sticky thread but all i could find was "we are still testing sealed enclosures" etc. Thanks.

Well I just had a box made for my 15" BTL and they kinda messed up...first they made the woofer hole facing up and the ports facing up also....do the ports facing away from cabin sound louder? Also i found out that the box is tuned to around 29hz....how will that sound?????? Will it sound good..will it be loud most also? I listen to mostly all rap just to let people know (i know rap sounds better in different boxes hz wise)...The box is around 4cuft also just to throw that out there. Help is much appreciated thank you. Here's some pics. Inside...one of the ports.

im running 2 fully loaded 15" btl's D2 of of 2 ia 20.1's. each amp is seeing a 1 ohm load and it doesnt seem as loud as it should be or as loud as what i was expecting. my box is 9 cubes after displacement, and is tuned to right about 34 hz. im wondering if my port area is to large, im running right now with 157.5 in^2 of port area and used 12 in^2 per cubic foot when designing it. box is 12.73 cubes before displacement. this is in an extended cab 06 silverado and it pounds the lows dont get me wrong, but i expected it to be louder then what it is. i can always make a port plug but have never done one and am wondering if i do need one, what would would you recommend me to…

Ok here is my question, If I cut the circle out to the circle in the specs will the SSD fit in there ok? If not what size should I make the circle. Here is the plans (I changed up the baffle so it would not be between both sides) Pics:

i got a 15 btl FL dual 1 ohm i need a good amp or amps no more then 350 dollars i have 1 sae 1200 on it now but my buddy is going to buy it so i can get something bigger any ideas???????