Fi Technical

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.

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".

Hello all, I purchased a Q12 years ago and unfortunately for the life of me cannot remember if it is the dual 2 ohm or dual 1 ohm. There doesn't seem to be any markings on the sub or coils...how can I tell what I have? I could have sworn it was the dual 2, so I wired it in parallel to put a 1 ohm load on my amp. It sounds great, but the amp is going in protection mode when I turn it up. The amp is 1 ohm stable. So I pulled the sub out, wired it in series...which would put it at a 2 ohm load (if it was in fact a dual 1). No matter how much I turn it up, it stays on just fine. Problem fixed, right? Wrong. The sub sounds like crap now! As if the polarity is wrong or somethin…

Looking to build new system. Planing on using a Memphis 2500 watt amp to each sub. This system will be mostly for SPL but also some daily listening. Will be using 10" or 12" subs. Just wondering which Fi sub would work best. Will start with 2 subs but move to 3 at a later time and maybe a Memphis Mojo 4kw to each also.

I kind of started a post in the wrong area for BTL box questions. But I am looking at getting a 15" BTL sometime soon. I do have somewhat limited trunk space though (40x40x20). I would like maybe a little of extra room in the trunk for putting somethings (ie bags, books, backpacks, skating equipment etc). Can it be done to get the same boom / sound quality with a smaller box? I know on my other post, somebody said it was possible to make a little smaller box with biger ports to even the difference out. But how far can you take it? Like (I know you couldnt but...) making a box that only acted as a brace for the sub and maybe have some sort of diminishing cone around the s…

I'am going to be getting a box built and was wondering what tuning do you guys think for 4 10" Q's in a 4 cube box? it will be in a SUV and I listen to rock and rap. Thanks

Both setups will be run off of a Sundown Audio 2000D amp. I only have a space of 1.1 cuft per chamber to work with. I mostly listen to rap and want these subs to be able to lit the lows well.

1 12" Q with BP Power on a Rockford Fosgate 1500w amp wired at 1 ohm (so the sub will see 1500w) or 2 10" SSDs with flatwind coils and a US Amps MD 2D (so the subs will see around 750-900w a piece)... Both would be sealed setups. Thanks for the help

ok heres the deal im wanting to buy two 18's for my truck and want to know if the btl n2s will fit. I have an 01 ford f150 supercab which is just an extended cab 4x4.What i'm wanting to do is build a wall basically take the whole back seat out and build the enclosure in the truck.I am going to apply dynomax deadner and i have a pioneer avic z130 bt head unit and going to purchase two kicker zx 2500 amps and two yellow tops cause my trucks battery is almost dead anyway also going to get a bigger alt. or possibly two.Have already bought power acoustik mids and tweets.all going to be ran with 0 gauge.so basically i want the btls but dont know if they will fit because of the…

Would 1 10" bl with cooling and flatwind coil in a 1.4 cuft box tuned to 32hz be louder than 2 10" ssds in a 1.8 cuft Tuned to 33hz? Also what would be the ideal port area for the ssds if I put them in a box with two ports? Thanks

a single 15" MT in a 3.25 cu ft enclosure with 130 sq in port area and very well rounded interior of enclosure or two 15" MT's with only 50sq in port area in aprox 4 - 4.5 su ft of box volume assuming same amount of power is used peak frequency is 49 Hz if that really matters

I have 1 15 BTL Fully loaded, i was playing it today and it started smoking then went out. I have it on a Orion Hcca 5000, the gain was not up it was below half way, i wasn't playing it for a long time, i don't know what could be the problem. I have heard that Orion amps are hard to tune, i dont kno what the HPF ,and the LPF is suppose to be set to could someone help me.

ok guys i have a RF BD1500, birthsheet 1740 @1ohm, would 2 12" Q's or 1 15" BL be louder?? or is it possible for that to move a BTL a sufficient amount?? and also could you tell me what options to go with please and finally if i get a duel 1 ohm, does that mean the amp sees it at .5 or 1 ohm? and the duel 2 at 1 or 2?

want to know what fi soft parts to beef up my aa12" havocs .will the motor support an spl optiion or would it be better daily, or in between. .......... FRANKIN HAVOCS ON THE WAY????????!!!P.S. CAN YOU GUYS HELP ME!!!!!!

so what would the difference be if u had 1 fi 18btl fully loaded daily running 4000watts rms or if you had 2 18bl's loaded running 4000watts i would imagine that the 2 bl's would be louder cause more air movement? i dunno i just got done reading the efficency post that was like 8 pages about 500watts to the btl or for that matter what db increases would you be looking at it you ran the btl18 at 2000watts rms vs 4000watts rms what are the sound characteristics between the btl and the bl ? if the recommended box size is 5-10 cubic feet does that mean that the 10 cu ft will hit lower take less power to get louder but can blow easier? and what would the difference be between …

My friend is buyin a Fi Q with all the extras and we were wandering if any body had any old box dimensions and i dont want the dimensions from the website Q 15 – We recommend using a sealed box in the neighborhood of 2-2.6 cubic feet of volume. Ported box we recommend using 2.8-4 cubic feet @ 28-33Hz. Again use 12-16 square inches of vent area per cubic foot of volume. so plz if u have some dimensions for an 15" Fi Q ported box Thanks

I have a 15" Loaded BTL that is in 4cubes. The box is .75 MDF. I will rebuild the box, should I doublewall anything other than the front baffle? I will probably resin the inside of the box, as well as brace it at several places.

Does anyone have any clue where I can obtain so rough plans or designs on making pacman boxes for my 4 15" BTL's??? I have been searching but coming up with the stupid pac man game somehow..

Hi, I am missing the spaced spider option, what happend to this? Is this option still avalible?

I just ordered my dual 2-ohm Fi Q15 last night and will be ordering the Cadence iA7 today. I was hoping that one of you would be able to point me in a good direction as to where I should buy an enclosure for this, or where I could have one built. I plan on going sealed, is there an ideal size besides just 2-2.6 cubes? Any other suggestions? Thanks guys

Hi, i wanted to know which of these two amps would be better for a bl 18... SAZ-1500d or an SAE-1000D

Hey guys girls just wondering before i tear the system outta my tahoe and redo it which box will be better....the current box is for 2 18" fully loaded BTLS...ea sub has 6cuft after displacement and tuned to 32hrtz...but would it be louder deeper etc if the box was 1 chamber tuned with both subs..kinda like steve meades...just wondering.....also running 300amp ho alt (soon to be 2) big 3 all 0 gauge 5 batteries 2 US AMP MD-3D 1 on ea sub....let me know if im forgetting anything thanks

I'm probably going to order my Fi SSD 12in this Friday, and was wondering which coil to go with. It will be hooked up to a Kicker ZX750.1. And I read somewhere, that these can be somewhere between 900-950 watts RMS at 2 ohms. So would the Flatwind Coil be the best to go with.

SSD 10 @ .66 sealed (Recommended Sealed box: .6-1 cuft) SSD 10 @ 1.10 ported (Recommended Ported box: .9-1.5 cuft @ 33Hz) SSD 12 @ .88 sealed (Recommended Sealed box: .6-1 cuft) SSD 12 @ 1.56 ported (Recommended Ported box: 1.8-2.5 cuft @ 33Hz) SSD 15 @ 3.75 ported (Recommended Ported box: 3-4 cuft @ 33Hz) Q 10 @ .66 sealed (Recommended Sealed box: .2-.6 cuft) Q 10 @ 1.10 ported (Recommended Ported box: .5-1.2 cuft @ 28-33Hz) Q 12 @ .88 sealed (Recommended Sealed box: .8-1.5 cuft) Q 12 @ 1.56 ported (Recommended Ported box: 1.8-2.5 cuft @ 28-33Hz) Q 15 @ 3.75 ported (Recommended Ported box: 2.8-4 cuft @ 28-33Hz) The sub will be getting RMS, and the sub will be going in …

The fi Q 15 has a sealed enclosure range from 2.0 to 2.6 cu.ft. At which enclosure size within this range would product the best results for a SQ setup? Thanks guys.