Fi Technical

what is the formula to determine how much longer a port needs to be with kerfs? i intend to have 1 3" kerf on top and a 2.5" kerf on the port bend. anyone have any links? thanks.

My new box will be 4 cubes at 30hz, with sub up and port facing the tailgate in my blazer. (5 inchs port to tailgate) My running it with a sae-1200d So my question is, is this box too large?

In another fourm Im being told I need to change my tuning frequency from 32hz to around 60hz. Im running a FI q 12 d2 with a Crossfire VR 1000d. It would be for outlaw spl only not daily. FI doesnt recommend going outside of there suggestions, could any harm be done to my sub by tuning it this high ? Would there be any gains ?

I'm wondering if this is a good idea. The box being 12 cubic feet @ 35 hz with 189 square inches of port. That's about 15.7 square inches per cubic foot. I can tune slightly lower, but will sacrifice port area. Is this a good design for daily driving?

So if I get a DVC 2ohm BTL that means there are two voice coils, which just ONE can handle 2kwrms correct? So if I hook up 2kwrms to each, shouldnt that work? Or lets say 1500 on each coil for less heat? Yes yes I understand Im retarded, but you never learn if you never ask P.s. figured out my other question..

i did some measuring and the biggest i can go is 4.5 or less.. so ill have to get a bl 15 instead of the 18 that i had planned.. and i plann on getting a hifonics 1606. box tuned to 32. what you guys think. should i get any of the options. heres the box i got http://www.subwoofertools.com/forum/ported...mp;Fs=&CE=0

What si the Zmax of the SSD 15.. Also if you can tell me other Specs that are not listed on the site.. that i will need for designing let me know thanks

Hello all I have just received 2 FI Q 12s dual 2ohm subs. Now I am having all kinds of battles with self over what to do with them!! 1st issue is my amp is a Memphis Belle 5ch. If I run both subs, my wiring options are .5 ohm, 2ohm, and 8ohm. The amp is not .5ohm stable, only has 600watts at 2ohm, and not sure what it would be at 8ohm(only 400 at 4ohm). Would 600 be enough watts for 2 subs?? I have a Trans Am so if running both, I would have to have a sealed box. Is this doable without changing amps? I have been thinking of just running 1 sub and selling the other. If I do, I could choose a sealed or a ported enclosure. I have read the sticky about enclosure size my qu…

I am debating if I should dampen the custom box when I get my 12 fi bl 2ohm. Also what do you guys think about powering it with a PDX 1.1000 at 4ohm ~1229 rms?

Hi, i'm buying 2 Fi BTL 18's and was wondering how i could build a ported box. i've never built a box before so i need a lot of help. If you could tell me what i need to buy and how to do pretty much everything to build this box it would be great. Thanks

Like title says........what is the recomended port area for an X 10? It will be in .75cuft using aero port...............I'm thinking I read a 2.5" was enough once just need confirmation.

Which Subs Are Louder Period Just Point Blank Period! 2 Of These (BTL12) https://ssl.perfora.net/www.ficaraudio.com/...view.shopscript Powered By 2 Of These! http://sonicelectronix.com/item_12120_Hifo...+BXi+2008D.html Or 3 Of These (BL12)? https://ssl.perfora.net/www.ficaraudio.com/...view.shopscript Powered By 3 Of These!! http://sonicelectronix.com/item_9551_Hifonics+TXi+1008D.html If The 2 12'' BTL's Are Louder Which Options & What Does Each Option Do? Becuase I Like Lots & Lots Of Bass So Could You Guys Please Tell Me What Each Specs Is & Does. Oh Yeah I Personally Think The 2 BTL's Will Be Louder Because 2 Of Them Is 4000 Rms & The 3 BL's Are 3000 Rm…

I really need a ported enclosure design for a 15" FI ssd. since it is going into a pretty small trunk the sub will have to face upwards. other than that i have no clue on to which way to face the port, what size the box should be .....................if it helps my trunk is only about 15" tall, so my box really cant exceed like 14" tall, wheel well to wheel well cant exceed 30" and same for the depth. I would greatly appreciate a nice design for it.

yea guys..umm ive already done the big 3..no biggie...and ive got a rebuilt alt puttin out 300 amps........but i was wonderin what would be the least and optimum output from an alt if im going to be runnin 2 fi bls..18s ..thnx

Currently I am running my 2 15" Fully loaded Fi Bl's (flatwound coil, cooling, p chamfer) off 2 1500ds. I am about to buy some 18"s. They have cooling and flatwound but no p chamfer. How different are the 2 gonna be in handling since the 18" ones dont have the p chamfer but my 15"s do.

I've got a 2000 Frontier xcab and I've got 10.42 cu ft box for 2 18's to work with. I've got a saz3000d coming but I want to know if I should go with 2 BL 18's or 1 BTL 18. I'm thinking the 2 bl's would be louder, but the btl has better Xmax with the x coil option. I don't crank my system all the time( I have a toggle switch so I can shut the sub amp off-It's great for keeping the cops at bay) but when I do I want to incite fear and cure constipation from a distance. I want the hair trick factor and I want it to sound ok, not like complete chit. I'm looking for some serious BOOM for what space I got. It will be in competitions and electrical upgrades will be done. …

Has the title states, how do I get a 1 ohm load with 2 btls? My first previous subs where dual4 so I wired them in parallel. Do I need dual1 ohm? If so how do I wire them? Thanks.

ok so my brother wants to get a fully loaded 18" BL for his 00' blazer. hes got a stock alternator i think 105 amps, and hes thinking of getting a hc1800 battery in the back with a hifonics xxv or xx thor amp. will his electrical be okay for this?

When I took out my subs I found a brownish materials on the sub terminals. Upon inspecting, I suspect the glue from the cone to the surround is melting. Is there any reason to it? Also would any glue which is strong enough would fix this. I plan to use the 10 minuted epoxy as its avaiable in anywhere in my please compared to the CA glue or the original glue that was used. Would the epoxy do its job without affecting any performance? thanks

friend wants to buy a BL 12 and place it in his car. he wants it even with teh rear seats so its a bit tall of a box. does this look proper for such a sub? http://imgur.com/a/IUDaJ

Site says the cutout is 14.125 what does that equal out to? I have a router jig, is it like 14 1/16? Or 14 1/8?

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

Hello everyone, I am trying to decide if I should just get an amp that will do full power at 2 ohms or order a D1 BL 10 and a recone for my BL 10 with the universal option. My current amp is 1 ohm stable, it "Can" run at .5 but only if my electrical system can support it, which it cant because its all stock. So, on to the real question, if I just order another BL 10 D2 and run my eD 9.1 at 2 ohms for 900 to 1000 watts rms, will my BL's still sound decent with only 500 watts rms. I know underpowering will not hurt a sub unless you clip, I know the recommended rms for the BL is 1000 rms, I know I should have considered all of this BEFORE I ordered my BL in D2. But I had pla…

ive been asking/emailing for over a week now just for a price on a 10" Q recone kit. and so far nick replied telling me to ask scott and nothing from him. i understand you are busy but cant take a few minutes out of the day to email me back or reply here?

i just ordered a 1600 watt hifonic brutus mono and i need some help with the Q. im not sure if it would be better for the Q to be ported or seal, also if i should go dual 1 ohm or dual 2 with my brutus?