Fi Technical

My buddy has 2 XT-4000D amps made by US Amps, I was wondering if 1 of them would work good for a dual 2 ohm 15" Fi Btl Subwoofer

Let me know your thoughts My dimensions are as follows: Height- 15 Width- 35 Depth- 21.5 Port Dimensions: HV- 13.5 WV-4.5 LV- 24.75 35 hz tuning... Should wang?

I looked at the voice coil on one and there were markings. What does FC FW mean? Plus how will I know if it has the cooling option I ordered?

Hey guys, I'm looking to build my own vented enclosure (my first) for a 12" BTL fully loaded. I have looked at the box builder programs, but am having trouble. Would someone please design on for me? The maximum dimensions are 15"H x 34"L x 30"D. I plan on making it double baffle, and adding a magnet holder. But I guess before finalizing a design, I was thinking that it should be tuned to 35Hz, what do you guys think? Thanks for the help in advance, Justin

I looked at FI's website and also at the sticky on this site, but still can not find the answer. If you can use a sealed enclosure, can anyone tell me the recommended internal volume? Thanks!!! ryan

hello i purchased an 18 inch btl fL in june and 1 tinsle lead has broken off... i resoldered it 2 times and now its too short.. i was wondering how i could go about doing this now. do you guys have a tinsle lead kit i could buy from you guys or something, or would i need to buy a recone kit... if so i would like to do the the cheapest option. please help thanks in advance

Hello all, I have a 1999 GMC Yukon that I use on weekends to travel to sporting clays shoots. This truck will never be used in a Audio competition just two semi deaf old guys(36 an 38) like to play it loud. The current system is: Subwoofers and speakers 1 JL 18w3 2 Jl 10w0s 4 Infinity 6.5s Amps Kenwood 9104D (powering the 18) Alpine MRP-M500 (powering the 10s) Alpine MRP-F300 (powering the 6.5s) Other Two batteries high output alternator "big 3" This "system" does okay but we are getting a little bored with it. I have a second Kenwood 9104d (900 watt rms at 2ohm limited to 900watt at 1ohm from what little research I have done these amps really do around 700 wa…

Does anyone know a good box design for 2 12" BL seies subs. Nothing to massive has to fit in the trunk of a car.

I was interested in the AA Carbon fiber mids. will they fit in a 6x8 space? Do they have an adapter ring. Plus do they come with a passive crossover and tweets... Right now I have the Pioneer 720PRS components which are pretty nice and have been reviewed very well. Have you heard them? If so how do they compare? And prices.. or local dealer to 11703? Thanks. Mike I tried to send this PM but it wouldnt let me

Hello again, Now it`s the time for some SQ after some flexxin` (ex: and hihi ).After 6 months of BoomBoom and re-listening to some local SQ cars(some brax users, scanspeaks, focal, microprecision etc) I bought from a friend (who upgraded to microprecision) a set of Focal 165 K2P woofers and HybridAudio L1 Pro tweeters and an Alpine 9835. Now I`m sounddeadning my car, especialy my front doors with 1layer of SS Damplifier Pro+Spectrum Sludge+Damplifier+OverKill pro. Amps: HAT L1pro: Zapco Z50S2; Focals: Premier; Fi Q15: US Amps XT4000(1500W@1ohm load). What enclosure should I build for an SQ setup....a 2cuft or...2.5-2.6 cuft? The subwoofer is behind the front stag…

im looking for a ported box for the trunk of a 95 caddy, 14"H 14"D 38"W is the max for the box. it's for a 12" ssd how long/big should i make the port to tune it around 33Hz's it also going to be powered by an alpine 650 watt amp.

Optimal box internal volume is 1.1 after displacement, therefore, before displacement it would be 1.1 + .14 = 1.24 cubic feet. Would it be more advisable to buy a box that is slightly bigger than 1.24 and put something inside of it to displace volume or to buy a box slightly smaller and fill with polyfill? I'm finding boxes with 1.0 cubic feet and 1.5 and not sure which way to go.

i need 2 mt recone kits for my 15's i will also need the glue and i would like to have them dual 2 ohm plus i would like to have the fi dust cone can any one help me out with this i need to order these asap no response on web site

im doing an instll in a 88 s-10 blazer for 2 12" ssd's for everyday use tuned around 33 what type of box do you guys think will be best? i was thinking about a crx type box but what size box/port should i go with?

Just like the title says, I'm planning on getting an Fi Q12, dual 1 ohm with BP power. I was planning on running it off of this at 2 ohms. Will this power it properly? Also, will I need to do any electrical upgrades such as the big three upgrade or a red top battery under the hood? As of now, I'm running off of my stock alternator which puts out 120a and my stock battery. Thanks for the help, -schmizzle

Hey guys new to this forum and just looking for some info. I have a BL 15 on a SQ2200 sealed off in my car. The res fq of my car is 37hz and im looking to increase my spl #'s. What is the recommend port area and port area per foot? I was thinking about using 3 4" PVC ports. Does anybody recommend something else?

I hope this is posted in right place.... Two questions: 1.) What is the RMS and peak wattage for a single 12" BL with the dual2, flatwind, daily and pchamfer options? The reason I am asking is because I seen on Fi 's site that it says 1000w/rms, but everyone is highly reccomending the sundown 1500d (which i am about to get.) So, why is that so if it is only rated for 1000watts? Does adding those options bring it up? I had a new custom box built by Sound Advice here in florida and the guy who was instlling it says to me that I will not notice too much of a difference in swithcing from a RF Punch 1000w/rms amp to a 1500 watt/rms amp ( in this case to the sundown 1500d)…

Would you guys suggest tuning a BL 15" to 28hz? Has anyone tuned their box for one that low?

Box is 13.5cuft Tune to 32hz After subs just under 13cuft Subs are in a common chamber one large vent this is a slot port what do you think about VENT inside area height 5 in Width 39 in depth 15.5 in This vent will be taking up 2cuft over all this numbers were made with carstereo.com calculator is this going to work good or do i need to rethink it again WILL TAKE ANY INFO

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.

I have 1.0 cubic feet before displacement and it is a sealed box. I am wondering will I be able to get a 12" in there with adding polyfill and make it sound good or should I stick with the 10". I will have a sundown sae1000d powering either one.

have a tc9 motor, want a Q recone and im getting a 10" 12 spoke basket from someone. wondering what is the difference i need to know to know if my tc9 is too shallow or if its ok for the Q coils

Need them in dual .7 Shipped to 32765 - Oviedo, FL

What would be an excellent recone epoxy that I can get from Lowe's or Home Depot that would be good to reconing 3-12" FI SSD's???

Hey. I going to have a 12" ssd with copper coil and the kicker zx1000.1 amp and i was wandering if i would be alright using 4 gauge power and ground wires because thats what i had for my old setup which wasnt as powerful...or should i just run 2 gauge wires???