Fi Technical

I have looked through pages and pages of forums and cant seem to find anything explaining what the purpose of the space spider on the sp4 is. could someone please help?! i ordered a sp4 yesterday with the space spider and would like to know its significance.

so this sunday, at a local comp i heard rumor that a guy was using a BTL N3 for a daly setup. I ended up seeing his name on the record board and couldnt believe it was true. The guys setup was a 18" N3 box 5 cubes tuned to 35hz, and he metered a 150.7 outlaw in a SUV. i was most impressed. I had the thought that the n3 could NOT play music daily, untill i heard his tonight. It sounded very good. i messaged nick immediately and he got back to me within a couple hours "as usual" and notified me that they can play music, BUT that him and scott believe the motor force is too great and will actually decrease SPL. so in other words you guys, the n3 can be played daily, however …

Hey guys!!! So I am currently running a box built from Dave the box guy. Its 2.5 cubes after displacement, tuned at 35 hz. I have a the ssd with flatwound and bp power, a 2010 model. Anyway, I LOVE the way this thing sounds. But I got to thinking.. I know that Fi Recommends the max ported box space to be 2.5 cubes, and thats what I run. But I am still a novice, and got curious about mechanical handling... Would running this at 1000 watts rms daily (MB Quart ONX 1500.D amp) be okay to do? Cuz thats what I am running, with the amp tuned as well. Just wanted to make sure that may check out okay, or do I need to reduce my amps tuning? Thanks guys! -Chance

Can it be done to extend the gap limits?

a question for the man shawn fleming and any body else that know about spl boxes.for spl only,which box would be louder for a btl-18 with 5000 watts.a 6.2cf box with 98 inches of port,tuned to 64 hz. 7 cf box with 114 inches of port at 64 hz or a 8.5 cf box with 138 inches of port tuned at 64 hz also.for spl burps only.this setup is going in a astro van,4-btl's 18's.trying to find best box config.with port on driver side.all thoughts are welcome and valued.thanks BP.

Hey guys i have a couple of questions, i got a saz1500d, and i am going to be ordering a 15q, should i run the sub at 2 ohms (800watts rms) or 1 ohm (1500rms)? Right now i only have 4 ga running to the back, will that be okay if i run it at 1ohms or should i stick with 2 ohms, I am going to run the most likely sealed in a 2.5 cu ft box. i have a 09 toyota corolla, not that much trunk space, or will it sound better in a 3 cu ft box ported? If you guys have any other helpful tips please let me know. Thanks

I am needing box plans for a FI.Q 12. I know I could probably go out and buy one, but I would rather build it myself. I am planning on making 1.3 cubes like recomended as optimal. I don't want just a square box though. I would like it to be 4 sided with a little slope in the front. I'm sure you know what I am talking about, I hope. Anyway if you could tell me the size height, depth1(bottom), depth2(top), width, and angle that the slopes on the front usually are, I would appreciate it very much.

hey i got some cliff designs cd120c and im looking for recones need to handle about 1400+ rms they will be on a rd 1750 for now but im upgrading to a sundown 3000d. got anything. pics thanks

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

Hi. Im from Romania and i bought 8 or 9 months ago a FI Q 12''. As far as i know there are 2 speakers sent in Romania A FI Q 12 AND A 15. OK i have a little big problem with my fi q 12 sub. the spider has unsticked , or broked , from the center of VC or how is called in english and that makes the sub scratch if i play music. i stopped the music since that day cuz even if i slowly hit with my finger the surface is does pack pack !!! oufull sound. and... i expected more from Fi ... i never tought it will broke. by the way the voice coils are intact. tHE power that the sub recieved was 900 w/ 1 ohm . thanks ... i hope u can help me. http://img76.imageshack.us/my.php?image…

I have a old kicker SX 1250.1 amp. its rated 1250+ at 1 ohmn. my question is what would be better for the sub and amp? 1 or 2 ohmn's? the 1 would be getting more watts so it would be louder but if i ever switch amps will that effect the 1 ohmn? the sub would be a 12in Fi BTl N1 sub, its rated at 2000rms, idk which to get 1 or 2?

hey pm me or shoot me an email at [email protected]

Good morning to all. Ok, have a build question for the forum. I'm looking to get an 18" BTL soon and was curious as to what would sound the best in regards to sub direction. Room is not an issue as I have an SUV. I'd like to take a poll and get opinions on why you chose the following: 1.Sub up to roof and port to back of vehicle 2.Sub forward to driver and port to back of vehicle 3.Sub to back of vehicle and port to back of vehicle 4.Sub forward to driver and port forward to driver 5.Sub up to roof and port up to roof I'm really looking for ground punding and earthquaking when I want the sub to perform, yet sound decent with pop music as well. I have a broad range of mus…

* Rated RMS Power = 200 watts * Mounting Depth = 4.25" * Outside Dia. w/gasket = 8 5/16" .........(inside the lip is 8 1/8") * Inside Dia. 7.000" * Sealed Box: 0.280 ft^3 w/ F3 of 50 Hz (Qtc = 0.707) * Ported Box: 0.60 ft^3 tuned to 30 Hz F3 of 25 Hz * MSRP - $99 T/S S4 **: RMS: 200 Re = 3.37 ohms (4 ohm nominal) Fs = 34.9 hz Qes = 0.5323 Qms = 6.93 Qts = 0.4943 Vas = 7.6 L BL = 13.3 N/A Mms = 127.7 grams Cms = 162 um/N Xmax = 12mm one-way linear (70% BL method) I made an album with measurements of anything I could think of that you may need to know in order to find/build a recone kit for these... I'll need maybe 12-14 of these. thankyou!~!!…

Hey guys I was hopeing to get help on designing a box for my little brothers geo metro... He is over seas in the army and should be back in a few weeks so i decided i wanted to surprise him.. All I know is he doesnt want a wall built in the car (he likes his back window), So the max dimensions i have are 35" wide x 36" long x 20" tall. I have a mtx 1501d amp to push the beast so far and also dual alternators and 2 sp1000 stinger batteries. Any help would be very appeciated thank you.. also i could even try to send some money if someone did design it but no guarantees on that we all know how tight money is... Thanks Gator

Will a 18" BTL handle 2 Memphis 4kw for Street Beat or burps. Also when building for SPL only is it better to use a small or large box. Can you also let me know what a recone costs for a BTL a 15" & an 18".

Hi, i've been passive for a few months right now. My last system was one 15 btl dual 2 on two RF t20001bds @ 2 ohms with few kinetiks and 300 amp alt. I think of adding another btl 15 but keep the amps, one btl strapped to 1 ohm and one t20001 @ 1 ohms per sub. Do you think this would hit harder or should i just recone the current btl to dual 1 to use the full power of the amps.... Patrick

I have 2 12" Fi Q's and im probobly going to order a subthump box for them, because I hear subthump makes one of the best prefab boxes for Camaros and Trans-Ams. However, these boxes only have a total of about 2 cu. ft. and after diplacement that would only leave me about .85 cu. ft. per sub. These boxes dont take up the whole rear well though, so if you guys think it would be worth it, I could cut out part of the bottom of the box and add some space down there. Thanks, Ben

Hey guys it's been a while since I've posted on here and I just wanted to know what yall think. I've got a 2nd generation BTL and I'm thinking about selling it and upgrading. Which would be louder 2 BTL's or 4 X's both scenarios would be 15's? I know the more the surface area the louder but would the power make any difference in the application. Any suggestions would be helpful. Thanks

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

i am willing to use my whole trunk if necessary...you guys think it will fit?and sound good....i already know it will look good that thing is huge haha....also ...how should i wire it?...i have a t8002 for now but i am going to upgrade real soon...i bought the dual 1...any tips?

Hello all, I am wanting to purchase a bl 18, but possibly a q 18. The dimensions of the box i can make are around 16h 32.5w and 22d with the sub facing up. I have a couple of questions, first, does it sound better to have the port on the side of the box or going along the bottom? Secondly, would that be enough space, i calculated it to be around 5 cubes after speaker and port displacement. Lastly, this is going in a celica gt-s hatchback and i was wondering how much room do i need between the back of the car and the front of the box? I think with these measurements i left out like 6 inches between the two. Any help is appreciated.

well as u can see i have a kicker zx1000.1 rated at 1258 watts. which i do not have installed in my car yet which is an 02' dodge stratus R/T coupe, and i think it hase either a 85amp alt or a 90 amp alt. And im also goin to be buying a 15" BL w/ the p chamfer i already have the big3 upgrade done with elemental designs 1/0 gauge wire will i have to consider on upgrading the alternator?? ive looked all over the net, and i just cannot find one for my car, so i need some help on that IF i do NEED to upgrade and wat about mabe a battey or 2?? thanks

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

What is the cabinet size for a Fi SSD 10 high QTS version