Fi Technical

Which way should I go? - Rockford T20001BD - Audioque 2200D - Sundown SAZ-2000D Will be powering a 15" BTL. Just need some comparisons. Thanks.

I have my wood and screws and im getting some wood glue do i need anything else?

Basically I'm stuck between two designs. The first one is 4.3cf with a 6" flared aeroport tuned to 35Hz. The second enclosure is 3.5cf tuned to 32Hz using a slot port, with 54" of square port. The power is 1000 watts rms at 1 ohm.

I have an 18" Bl and i want to know what gauge wire you think would be best to run from the speaker terminals to the sub from a Rockford Fosgate T1500-1BD. Thanks!!! I want the most power i can get to it so im thinking 8 guage but may be too big so please help!!

Hey guys So here goes Have my two Fi Q18's off a JBL BP1200.1 When i first installed them they moved in phase perfectly it was actually awesome to watch ! Now they dont and output is down noticably, So.. .. I pulled each speaker out of the box and checked for physical damage, none, no burnin smell AT ALL and no loose glue that I can see, second i Tested each speaker on its own, works fine, i checked coils, fine they all show up the same. Im runnin dual 2 ohm in series parallel and am getting 2.2Ohms on the VMM for my final load , fine.. Speakers were making a funny noise sort of a raspy sound right after they stopped working in phase... Unhooked em right away , checked, …

I have a fully loaded BTL 15" and it got here yesterday. I had one of those cheap prefab boxes laying around so i popped it in and put 1200 watts to it from a hifonics amp. Wasn't quite what i was expecting. My friends two 12 inch mojos hit way harder than the BTL. I'm not trying to put down FI or anything i just want to know how i can improve the sound (loudness) of it. How much better will 2000 watts RMS to the btl and a much bigger box help? my current box is only 2.3 ft.^3 Heres the dimensions of my new box.

Hey guys im wondering what a P chamfer is on the fi q. thanks for the response!

I'm about to get 2 Q 12's with cooling and spider but what is high QTS? i know its for a sealed box only but would i be okay running them in a sealed box without high QTS?

Searched all over, and can't find the Le (inductance) spec number for the Q15 subs. Anyone know this spec?

Was going to order a couple 2 ohm recones for my SSD's but now there is the basket option of yes or no. Didn't know what this meant. Can someone tell me please?? Thanks!

Hello all... after a lot of questions i have ordered my last big toy...a FI BTL 15 full loaded (dual 2ohms) i have ordered a rf 20001bd too .....but at this time it is backorder :Doh: :Doh: so what is the best amp for this sub? new hifonics 2007d ? orion 2500d ? sundown 3000? please helllllppppppppp me

If anyone can help me, it would be greatly appreciated. I had somebody build me a box for my (2) 15" Q's but I think the Tuning is off. Can you tell me the Size and tuning of it? here are the dimensions. The box is: 35"x25"x25" The port is: 29"x23.5"x5.5" Thank you!

the actual diameter of the BL 18? need to see how im going to have to design my box

Im looking for some peoples opinions on what to run to my bl 12 at 2 ohms.? comments are very welcomed

I have a 12'' fi Q and when i got my box built the guys put a separate wire on each voice coil. Its a dual 2 ohm sub. What is the final ohm i am getting once i connect it to my amp?

I want to buy 2 Fi BTL 18'' with 4000 to 5000 rms each. they will be in a 2006 ford F-150 in a "blow through" i still dont have any amps, i normally listen to music with low notes. some guy told me that if i order a sub with 5k i could not play it for more than 30 sec cause it would burn. would that be true. how much would a sub run of this type?

Well i'm not sure if this is the right place to post this, but i'm wondering what options would be enough to get a 15" BTL at around 2600rms with ease? Thanks

a americanbass 500.1 move 2 BTL 18''in a box 13cf tunin to 33hz only daily use thanks

Ok i have a 03 silverado extended cab and im wanting to put either 2 12 q, or 2 ssd under the rear seat in a sealed box that has .82 airspace for each chamber and a 7 in mounting depth. i dont know what subs would be best because i really want something that would make people stare lol any advise would be greatly appreciated

Hi, in the future, I am going to order a btl n2 12 and build the box up to reccomendations, and I just want to know what am I to expect from this subwoofer spl, sq and just over all loudness wise. This will be my first system, I just want to know should I be set with just 1 btl 12?

Hey guys, sorry if this subject has been brought up in the past. Search engine is not working well for me. I am getting a 15" IB being built for me and want to mount it properly. I am going the T-nut route but do not know what size screws to get? 1/4in enough for 3/8? I dont even know what size the holes are in the sub frame. thanks for your help! Ralph

Well,I just ordered a Q15 dual 1 ohm sub for my car. I had a 12w6v2 in a jl spec sealed box but after hearing the Q10 in a sealed boxed that I bought for my wife's car (hers goes lower and sounds better than my 12" ,just not as loud)I decided to go Fi also. I have a 06 Jetta and I wanted to run a sealed enclosure.I have lots of trunk space. I know that the spec sheet says 2-2.6 ft3 but is there anyone running larger and how does it sound. I want to focus on sq and very deep lows.

I am planning on building a 4ft^3 for my BL 15. I was just wandering what size my slot port should be (Length, height and depth) if i want it tuned to 33hertz?

I just bought 2 10inch BLs and I have a 2600w hifonics amp, what size speaker wire should I run from my amp to the subs? ive been told 8, 10, or 12 AWG and im not sure which to go with... Thanks

Alright guys im new here and don't know if this is the right place for this but i have an old box for 2 15's. Its 10 cu.ft tuned to like 33 hz. Im wanting to get some new Btl N2's. But im not sure if i want to stick to 15's or cut the holes out bigger to hold 2 18's. What do you think i should do? Never had 18's. So Im trying to squeeze the most spl's out of it as i can. Also i will be using my Memphis Mojo 4kw amp.