Fi Technical

Just recieved my FiQ12" need some help on box ideas measurments.. etc.. I drive an 06 Nissan Xterrra. I would like to build a box the slants at an angle "towards" you following the countour of the back seats to.. (larger on the bottom , to smaller on top with the front being straight , facing the back) if that makes sense...Ill post a measurement of the height of the back seat at the angle but if any one is an SUV owner out there you know what i mean... i hope...that makes sense... I am assuming an angle on the back of the box doesnt make a difference.. its the amount of air inside.. I also need some recomendations on terminals for the box.... I am open to alternate id…

This is my first real system and I plan on running 2 10" FI Q's with a Sundown Audio SAZ-3000D. I have plenty of experience with woodwork, but since this is my first real system where I'm building my own box, I need some help with that. First off, originally I was planning on facing the subs inside the car and seal off the rest of the trunk. It's a 4-door and I can't really remove the back seat, but the majority of the time the back seat is down anyway. However, after reading a bit more I've heard a lot of people mention and tests done to show the subs may actually be louder facing the rear of the car. What do you guys think the optimal setup in my car will be? I'm drivin…

Looking at Possibly Doing 2 18" SSD's in the Trunk of a Lincoln Town Car (1996)..On a Massive p1500.1,,, I was just wondering on overall efficiency on the ssd's.. ive yet to play around much with 18's and i figured i could fit a good 12+ cu ft back there.. Im thinking possibly subs up vent back but was wondering everyones input on overall sub/port placement on that specific vehicle

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 did a search for this and the posts i got were confusing. i want to know the wiring options and ohm load for 1ohm dvc speakers; for one and two woofers. so ill know wether to get dual 2 or dual 1 when i order my ssd's. thanks for any info that can clear my foggy head.

Folks, I want to try to do my first DIY subwoofer for home theater. I've heard some folks say that the SSD or Q series model well for home theater? Which driver would be best.....and what size enclosure (I can build a slot ported box) for home theater use? I would like to be able to go low....but still use for music. Edit: This will be an 18" build...... Thanks! Chris

What wiring Options do I have with Dual D1 Coils for 1 and 2 subs need all the wiring possibilities. Thanks in advance

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 may be getting a blown Q 18" in a trade with a gentelman over on ROE, I want to recone it down to a 15" or a 12" , probably a 15". The guy said Scott quoted him $75 for an 18" recone kit, how much is the 15" and the 12" recone kit plus a 15" or 12" basket.

Hello, I'm thinking about getting 1 18" bl sub pretty soon, so I'm designing the enclosure now to make sure it fits. I have a 2000 Crown Victoria Police Interceptor, so the trunk is pretty big. I want to do a sub up, port back enclosure, but I'm open to anything. I'd like to get it around 7ft^3. Here are a couple pics from a crown vic's trunk. I wrote in my trunk dimensions on one of them. They are (as accurate as I could get ) 26"D x 41"W x 20" H (13" clearance under the spare tire, 20" for the whole trunk) Heres a video with the kind of enclosure I would like to build Would this be possible in my trunk? Also, what dimensions should I be looking at for my port? I'm a…

currently have 2 18" bl's off a kx2500.1 @ 1 ohm. birthsheet states ~3kw @ 2 ohms. here is my post copied from ca.com "currently they are sitting in 11.5 cubes or so tuned to about 35hz. output is pretty good but still not quite where i want it to be. seems like with my ammount of power they should be louder, especially for 2 18's. the only thing i can think of is box volume being on the small side. i was told by the FI guys that 5.5-6 cubes would be fine with my power, but im having doubts now. im thinking of sacrificing my rear seats and build the box to take up the whole cargo area but still be at/under the window line. this would give me a chit load more room to work …

Hallo from greece. I want to know how many litr do i want for two Q 15" to play deep bass at 32hz???What power RMS can handle 2 of them together??? Thanks.

hi i need to rebuild a couple tc9 based eclipse subs and i was told this was a good place to look. how can i go about purchasing a recone kit or two? they are 12" subs dual 4 ohm coils. im looking for something that can hopefully handle more power than the eclipse coils thanks in advance chris

Need to recone my 12Q i bounced a screw threw it drilling it down. rip in the rubber

im looking at the hifonics bxi2607d amp. Its rated 2600 watts at 1ohm. From what i have heard ( and also from personal use) the bxi line is over-rated by about 200-300 watts. This amp is a little different from the other amps in the bxi line. For one, this is the 2007 model. Also, this one is strapable. Does anyone have experience with this amp? I want to know if this amp will be able to push a loaded 15" btl and sound good enough doing it? i dont think im going to get the $40 cooling, just the $10 one. I am going to run it off of a 140a alt, 2 batterys (one of them a yellow top), and do the big 3. I also plan on using a 5 farad cap. I read a thread on roe that they are u…

ok i have a 15" fi btl with a sundown audio saz2000d. i built a box (3/4 mdf) with 4.5cubes of air space after sub displacement. i have it tuned to 33hz,(slot port) it sounds pretty good, i think , loudest sub i have ever own lol... im just wondering if it wouldsound better if i seal off the port and add some round flared ports ?? any thougths ? ideas ? sorry for the stupid question... please sum help... should i leave my box alone ? build a new one ??

i emailed Fi SIX months ago askin about gettin a recone, and well im still waitin for a reply. i think i sent a email to nick, but cant remember. who else can i get ahold of to get a recone?

I have a company to build my box, but I am not feeling very comfortable with what they are capable of. So, I want to show up with ideal measurements in hand and make sure they don't make a mistake. I have a 15 inch BL fully loaded dual 2 and will be running 1000w RMS to it. I need to build the box into the spare tire well and up a bit. I want to know where I should fire the port and roughly how many sqft I need and how to configure the port. Currently, I have a sealed box firing straight up. Its okay, but not great. The sub will be at he very back of the trunk, should I fire the port at an angle towards the rear window with the sub firing up?

Ok, so my fully loaded 18" BTL should be here on wed., I want to get started on the box in the next couple of days. But I have no hands on experience with this sub, and I don't like relying on a computer program. So, I need to know what size box/tuning I should be looking at for it, all info listed below. 18" Fully loaded BTL, powered by an MA Audio HK4000D @ 1 ohm, so roughly 3500ish rms. I don't listen to THAT much rap, but still want it to hit the lows.I listen to stuff with a lot of double kicks, which I don't want to sound really sloppy/mushed together. So, cliff notes. BTL 18, 3500rms, and lots of double kick drums Also, PLEASE do not reply if you do not know what …

I've got a couple IB 15" for home theater use. I was wondering how these would sound in a panel van. With a VAS of 270 I figured I'd make a 10 ft^3 sealed enclosure for each and give them a try. Anyone have any input?

39" wide 18" deep 22" tall 1.5" walls 4.5 box volume 76sq" of port 32" long port tuned to 34hz With available space, I'm tuned a little high (it's a big interior, peaks around 40hz)...and I'm lacking port area. Should I go longer on the port to get lower or should I go longer and wider and keep the tuning freq (or possibly let it raise)?

can someone please help me out here? i need a box design for TWO 12" Fi Q's!! tuned to about 33 hz. and the dimensions (height) should be able to fit in an 07 altima with limited trunk space or theres no point lol. thanks a mill

which amps should i use for a 18 blt fuly loaded dual 1ohm's?

i wanna run a fi ssd 18 off a us amps xt 1600.2 in my sebring.. but im not sure if i have required space for it in my trunk.. i would probly have to face the sub up and port back to make it work. what do you guys think..

what do you think. Will face rear of 02 grand cherokee. 1200rms amp. 6 cubes. tuned right around 33.5ish 4.5in port width 39.5in width 18in height 20.5in depth thats only gonna leave me with like .5in between port and sub, sub and sub, and other side of box. (including .75in MDF) concerns/recomendations