Fi Technical

So i am about about to add another BL to the trunk the both will be dual 2's, daily, P Chamfer, and univeral features.. Im looking at sundown audio for my amp. Which model should i go with? any reccomendations, sundown or any other brands?

ok so im wanting to upgrade from a 12 btl to a 15 btl..and my question is do i have enough room. i have this to work with......24 tall 42 wide 19 deep..thanks for the help

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…

im running 2 bl 18s off 2 saz-1500ds now, subs up, port back. I got guy that wants to buy my subs possibly, so im looking at other options. How would 4 ssd18's take the 2 saz-1500ds? Would they get enough power? thanks

Soon im doing a blowthrough in my 97' single cab s10. I need an opinion on an amp to go with the 18" Fi car audio btl. I was thinking of the rockford fosgate t20001bd. I have no idea what amp and how to wire it right to get the right power to the sub. With that amp i would wire it at 1 ohm. is that the best way to go. I know if i wire it up at 4ohm i need alot bigger amp... any suggustions.

Ok I read the options page and I understand it pretty well. My question is I know I need to get one of the cooling options on the sub but which one? The sub will be used for daily. If I go with cooling, the strength of the motor will be reduced but if I g with just teh p/chamfer option, will it be enough to keep things under control? I really don't want to loose any structural integrity inside the motor if I don't have to. And the inner heat sink? I don't quite understand that one what is it for, and do I need it? So the options that I think I need are: p/chamfer, hi xmax coil, daily, universal? Would these options be what Ineed for daily 2k+ rms? thanks

I want something that will flex glass but that i can us daily. i was sold on the btl 18" but will it handle everyday abuse? Any help would be great thanks

So I unrapped my new toys today and put them in. But I want to make sure that I don't need to remove this bolt covering the pole. I'm thinking it's just there for shipping so nothing gets in, but no book = no idea. Great looking sub, and I'm happy. Perhaps someone could save the Fi guys some time and make up a generic 2 page book or something. You know like people always like to ask "where's the mounting holes" and now I'm asking about the allen bolt. etc. etc.

okay so i have an old three stack magnet btl twelve if i bought a new single stack btl 12 would it be worth it thanks.

I just got my box for my 2 18's Q's but i dont like the way it sounds, it's in my explorer , he tuned it to 30hz in a 13 cubic ft. box, its all high bass. i want a groundshaker. how many hz should i tune it to??

Hi, can anyone link me to a thread that explains the change in the ~2006 to ~2010 motor that's used for the Q? I bought a Q15 back in 2007 and the motor for my new Q12 looks much different. The old motor has a double-stacked magnet setup. The searches I've done haven't come up with any info on this change.

Hello all. my enclosure will be finished soon.. like i haven't a lot of space in my CLK trunk,i have made a 3.6 cu ft @ 33hz box(after port and diplacement... 55 square for the port area). So do you think it's good for daily? (no SPL competitions)... low will be good? good SQ ? value for the subsonic? I have ordered my amp, a "little" Digital Designs Z1 this beast give 4000-4500w/1ohm at 12v.. my new batt is a NSB90(enough for the Z1) give me your ideas,pronostics i'll be back with a video soooooonnnnnnnnnn... ps:Scott,like you have told me,i have dropped my car ....2inch with the total weight

Making another request for dimensions for Q 10. Trying to determine if a Q10 will fit within an existing enclosure I designed and built using different subs.

Or should I say my son wants loud. I've e-mailed Scott a couple of times, but I know how busy he gets. I thought I'd try here. What I'm looking for is the loudest possiblw set up that I can get with an honest 1400 watts @1 ohm available. I can build a box any size I need to, so that's not an issue. It's going in a mini-van so I've got plenty of room. He's trying to do better than his current setup of 2 AA Arsenal 12's in a ported box (tuned around 32-35Hz). My initial thoughts were 2 SSD18's w/dual 2 Ohm vc's in a ported box, but I'm looking for advice from someone from Fi. Once the drivers are chosen, I'll need help with box dimensions. TIA, Carl.

Is 324sq in per sub too large for a striclty SPL enclsure using 4 Fi BTL 18's in a 32cu ft. box

Just a quick question, I planning on buying a 12" Q w/BP and I need to build an enclosure, going sealed. With dimensions of 19w 13h 11d, do I need to add int bracing? I was thinking just a strip of 2x2 along the top, back, and bottom. If it doesn't need bracing I can just make the box a little smaller to give the same volume Thanks, Chris

Hi, I found another thread where FI can recone a 3hp to a 18" for me, I found the price. I'm just curious as to what soft parts would be used to recone(as in what lines it would come from) or what parts in general(how many spiders etc, stiffness.) And do you beleive that the reconed 3hp would be good for 2500rms daily?? thanks, Joe I need the end load to be 2 ohm..so either 4 ohm dvc, or 1 ohm dvc.

Are there any 3D designing software to design a custom subwoofers box? thanks -JJ

What size and how many aeroports should I use? I'm thinking 3x6" ports for ~85sqin? Is this about right?

I have searched but not really found anything that really tells me what it is, how to reduce it, and how it affect everything. I figured brilliant sublike people around here would have some ideas...

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?

i am ready to purchase the fi bl 12. i have a hifionics brutus amp 1600 watts and i want to run it at 1ohm what option do i need on my speaker to run it at 1 ohm...??? dual 1 ohm or dual 2 ohm thanks in advance

Guys finally going to start building an enclosure for my Q 15. My plan is to do something like this: http://i161.photobucket.com/albums/t203/wy...enclosure-1.jpg I am aiming for 3.5 cu. ft net after port displacement with port tuning of 30-33hz (does that makes much difference musically??). My question is: 1. What is the recommended port are for the Q15? I want to make the port as big as possible for more air to move out of the port. 2. Has anyone ever modelled the Q15 in WinISD as everytime I tried to key in the value either I will get some errors or different t/s value. I dont know whether my box will yield linear response. 3. Has anyone (expecially Scott or Nick) can …

I didn't take into account where I was going to put my amp when designing this box (which is going to take up my ENTIRE trunk...so I had to pull one of the walls in slightly and that brought me down to only 4.7 cubes net after port and sub displacement...is that too small? Will I see any adverse affects?

i need to order a recone and basket for my MT motor..and ive heard statements on both sides of my question. does the BTL coil fit in the MT gap?