Fi Technical

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.

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.

What can a SSD take on a burp which is normally 3 secs at most... I am looking to run a pair of Saz-1500d's strapped on my ssds and would like to know how many watts can they take on a burp.... I was thinking probably 1600 watts per sub but would like to know before hand..

I was just wondering if you guys could make a dual 1 or .7 recone for a 05 XXX?

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...

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

Still need tinsel leads and a dust cap for an 18 BTL, older style

would i be fine if i just did the big 3 upgrade with 0 gauge wire. I have a 12bl fully loaded and a sundown sae 1200d.

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.

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.

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 just built a new enclosure and was wondering if 118 inches of port tuned around 31hz ok for my 4 fully loaded BL 12's?

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?

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

Is 5ft^3 net to much for a BL 15 running on 1200wrms?? My plan is to make a box with an 8" or 10" PVC aero port. If Im correct... 1. With 5ft^3 net and an 8" port would give me 10 in^2 of port area per ft^3 box area. 10 in^2 seems to low... 2. With 5ft^3 net and a 10" port that would give me 15.7 in^2 per ft^3 box area. 3. But FI recomends running 4ft^3 box and with an 8" port that would give me 12.5 in^2 per ft^3 box area. If I tune my box at 32hz which option would work the best for daily use on all types of music?? Any help would be aewsome.

Just wondering if someone could give me some plans for a ported box. Nick told me to post here and someone would be able to help me.... sub - Fi Q12 amp - TXA 1000-D max dimensions: -Height - 16" -Depth - 18" -Width - 36" Thanks, Ryan

IAM LOOKING AT BUYING SOME FI AUDIO SUBS 18'S I WILL BE GETTING BUT IAM HAVING A HARD TIME FIGURING OUT WHAT WOULD BE LOUDER 2 SSD 18 INCHFI SUBS OR 1 BTL FULLY LOADED ANY HELP ON THIS WOULD HELP ME THANKS!!! ill be using kintek batterys in a ported box in a crown victoria what iam looking for is for people to hear me far away as well as shakeing the hell out of my car lol which do u think would be best 2 18ssd or the blt loaded18

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.

Can a BL 15 with flatwind coil, and p. chamfer take 1000 watts or so rms for an hour or so at a time, and 1700 watts rms for spl burps? Or does the sub need the cooling option? In 3 ft3 enclosure tuned to 48hz.

I was wangin my ssd the other day and it was wangin hard, loud just like fi should then i turned it off went inside and about 2 or so hours later i went back out there was about to leave and the sub or amp just didnt pound like it did before. It just wasnt as loud and didnt vibrate my whole car like it did before. I think it might be the amp, but im not quite sure. I figure it might be a connection problem or somethin, but i checked all that and no problems. Thanks Mike

As you know this is my setup (I just posted it for people who didnt know) SUB:(1) 18'' Fi.BTL (Fully Loaded) D2,cooling,hixm coil,induct heat ring,daily AMP:(1) AudioQue 3500D (3500 Rms @ 1 Ohm!! & BTL's are recommended @ 2000 Rms) [is the amp good or what?] its getting the whole 3500 rms http://www.audioque.com/aq/AQ3500D.htm http://www.audioque.com/aq/images/AQ3500D/AQ3500Dguts.jpg (4):Screws for terminals (Better solid connection no leaks) Enclosure:(1):[Ported] 6 Cuft. (After displacemant) Tuned to 32hz. (MAYBE) 3/4 MDF (1):PAC 200amp Battery Isolator (3):300amp Iraggi HO Alternators 2 Kinetik HC 2400 Batts. Big 3 done (beefing up my electrical system) etc. Al…

I have two Fi X 12's and the tensil leads slap really bad. I have about 450watts on each.. i know the RMS is 300 watts.. but the sub is still putting out clean sound other than the leads... i noticed that the tensil's aren't aligned with the pad on the back of the cone. if i were to relocate the pads do you think this would solve the problem? THANKS

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.

I WAS WONDERING IF I COULD FIT 2 15'' BTL'S IN MY TRUNK. IF NOT COULD I FIT 2 12'S? I wanted to build a ported sub enclosure tuned to 32 hz. I ALSO WANTED TO KNOW IF THERE WAS SOMEONE I COULD PAY TO DESIGN ME A SUB ENCLOSURE? AND I ALSO WANTED TO KNOW IF HAVING 1 AMP POWER BOTH SUBS IS ANY BETTER THAN HAVING ONE AMP PER SUB (FOR EXAMPLE 2-2,000 WATT AMPS AS OPPOSED TO 1 4,000 WATT AMP? IF ANYONE COULD HELP ME OUT I WOULD APPRECIATE IT, THANKS, IM TERRIBLE AT MATH. My trunk mesurements are in the following link, I wasn't able to figure out how to post the picture. Trunk specs

I have a 15" fi. I got it used. Idk if it's a bl or q. How do I tell?