Fi Technical

I have a 99 chevy tahoe that is bagged and I am looking to building a box inbetween the rear tubs. In the picture it shows my measurement but will this be enough space for 2-15' FI Q? Those are inches not feet, sorry.

Hi, i recently bought a recone kit for my Btl. It was a 12" and I am upgrading to an 18". I cut the surround and spider to remove the cone. Now, i see the screws holding the basket to the motor. Simple, right? Well i cant get the screws to break from the motor. They were soldered on to the metal. I broke the solder with a screwdriver, and now i'm left with six screws that WILL NOT budge. I really put some power behind one screwdriver and the screw started to strip on the top. Any ideas?

Does anyone now what happens to your cars electrical system when you strain it? cause i have not upgraded my alternator and my capacitors and lights dim horribly, only upgrade i got is a a red cap battery

how would someone apply to work at the FI build house? just curious. going to college for machining and i really want to stick with car audio industry as a machinist.

Hi all! I have a 2004 Dodge Ram Quad cab. These things are impossible for trying to put in subs without pulling out seats and all kinds of stuff (not interested in). Found a guy who makes a specific "molded" box that goes underneath the rear seats. I really want to go with the Fi Q 12", heard really good things about the Q's and I prefer 12's over 10's for the notes they hit. However, this box has a single chamber totalling 1.8ft^3 in a sealed setup for a 12". Will the .9 - displacement per sub be enough to adequately run? How much polyfil should I use? He also makes a 10" vented @ 36hz and 10" sealed. The airspace would be the same as the above box. Would it rea…

Forum, I have a unique situation and was looking for help. I have 4 FI BL subs but 2 are dual 1 ohm and the other 2 are dual 2 ohm. Can i run these 4 subs in the same enclosure and what final impedence will they have wired in series or parallel?? I have 2 Fosgate 2500-1bdcp amps that can be strapped together at a final load of 2 ohms.

So I got a 12" Q last week and I LOVE it but my sub cuts out or has alot of background noise and i hooked it directly up to the amp and it plays fine and I am figuring that its the speaker terminal because when i put my finger on the negative it starts to play but when I take my finger off it stops? and In addition the - wire looks charred on the inside connecting to the terminal so my main question is has anyone else had this problem and what would be a good solution?

Ok I'm planning to run a 15" BL in my trunk and was wondering what box idea would be louder. 1. A regular ported box facing the rear. 2. Wall off the trunk and have the sub facing the cabin in a ported box, with this setup i could make the install look nice with the box i would do the plexiglass with mirror inside of it with some L.E.D. lights in it or something to see when you pop open the trunk with the amps on the floor with a false floor, itd look real nice but it gotta sound good too...would that way be louder??? and my seat fold down if that has any factor...thanks

Can anyone help me with a link or can someone help me design a tuned enclosere for a single Fi BL 15 with a max height of 17 inches? and a max width 36 inches? my first box for my first system.

hey there guys i am looking for a box design. i need it between 4.5 and 5 cubes. either sub in center or on side. i want it to have interchangeable ports with tuning at 32, 38, 44 if its possible. i have money if anyone of you guys on here can design me a box for my 15" btl that would be great. i will get my max measurements up later today.

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?

I recently purchased one SSD in my old box and i absolutely love it. I will be ordering a second sub in a month and need to build a box for it. I am trying to figure out the dimensions for 2 12's around 4 cubes tuned to 32 hz. I am not sure how to create a box that fits these specs. My dad and i built a box for a w6 but all the dimensions were given so it was very simple. Any past build specs would be very appreciated.

the dimensions of the room i have are 49"w 41"L 41"H. i was wondering if someone could give me a cut out of a box that will hit lows really good and move alot of air thankyou.

Hey guys, I've been messing around with ideas for my subwoofer and I have a way maybe that'll help with my predicament. Currently, I have a 1995 Honda Accord Sedan and the 18" is to big I believe to fit in rear facing. Currently I have it horizontally mounted. However...after looking through some of the build logs, I am debating about whether doing a slanted box or not. My question to you guys is, what types of effects will I see of this? Ideally, I wanted to do it rear facing. But i dont think that will happen. So i've compromised with it angled. it will still be around a 5 cu ft box and about a 60 degree angle the subw ill be mounted on. Any big difference you guys thin…

I have a fi q 12. I didnt choose the high qts option because i had planned for a ported box, but ported is wayy to big for my little trunk lol Would it matter if i put the sub, without the high qts, in a sealed box? If it matters, im going to put it in the smallest bOx possible I dont plan on running the sub to the max, just some extra bass for daily driving. Also, i hate rattling, so you can bet i wont run it any where near max output.

im looking to get help designing a new box for my 18" ssd. the box is going in the back of my 00 expedition with the 3rd row seat gone so space isnt a problem. the amp is a rockford t1001bd. specs for the sub say 6-10 cubes 32hz. should i do the 10 cubes? or smaller? and am i better off running the 1 sub at the full power of the amp ( birth sheet says 1400 rms at 1 ohm) or running 2 18s and dividing the power? also if i did go with 2 subs what kinda cubes should the box be?

Well I have a sundown 1200d I will be running 1 10 or 1 12 off of. This is going in a custom fiberglass box going under the seat in a 09 ram. I have alittle more than 7" mounting depth but as of right now only about .83 cuft of volume. I'm looking to extend that to around 1.0 cu feet if possible( and if I don't get the 10"). I have set myself on a fi sub but i'm not sure if is should go 10 or 12. This will be in a sealed box. I'm looking at the ssd and q series. For the 10" i'm actually over the recommended box volume already (.6 cuft). And for the 12 i'm alittle short (.8 cuft). What are your thoughts on what I should do?

Hey everyone this is my first post here great site!!! I got 2 12" Q's and the trunk of an SUV to work with. I need help with box design im looking into 4.5 ft tuned to 30hz I still want allitle room in the back just for misc. space. anybody have any idea's? or can u point me in the direction of someone who can help please

Hello friends.... today i'll put carpet on my enclosure... but before ,i have just a last question for my box In fact i can make it a little bigger ..... actually 3.6 cu ft 33hz and i can go to 3.9cu ft 32hz.. is it a big difference? the low will be best with 3.9 cu? more outputs,SPL ? i'm waiting your answer... thanks a lot and have a good day Damien

I have a guy waning to buy my SP4 so im considering an upgrade. the low end bass of the 29hz box has grown on me and i want it louder. my thought was to keep my 8.2 cubic box that i have my SP4 in and use that for a Team 18. I currently run a single KX2500.1 (2005 model) for my SP4. I was thinking of setting it up with a second KX2500.1 and buying a dual 2 ohm T18. then running 1 amp per coil, throwing my factory alt back into my truck and bracketing my mechman next to it. taking my 3 AGM G49's and isolating them along with the mechman into a dedicated power plant for the stereo and letting my factory alt handle my normal vehicle needs with a couple cheap lead acid batter…

would anyone on here be able to help me design a badpass enclosure for 4 18" BL's. The max dimensions are 21H x 49W x 72D and i wanted to tune it to around 29-30 hz. if someone can help please let me know asap.

I am looking at getting some Q's and I know that 2 12's will fit in my trunk sealed but I am not sure about 15's. How big would a sealed box be for 2 15 Q's?

If I choose to invert my subwofer so that the magnet is outside of the box, shoould the box be any different than if it were mounted regularly?

I was planning on getting a 15" ssd for my 95 saturn sl2....the problm is my trunk isnt the biggest. I have enough room to make it the recommended 3-4 cubic foot box but i would have to face the sub towards the top of my trunk. If i did this would it still sound as good as if it was facing the back of the trunk, and where would I have my port facing. Can anyone possibly make me a box design that would fit in my trunk for the 15" SSD. the trunk is about 15" tall, wheel well to wheel well is about 35" and back to front im not to sure. I would greatl appreciate some help on this. I was also planning on running my Us amps xt2000D on it.

Does any one know what the QTS becomes on the option of raising the QTS? I plan on getting a pair for sealed, but want to know what the QTS are. Also Plan to run a 1500 rms to each, should i get a extra spider? just dont want to lose the low end making it to stiff in a sealed box. input would be greatly appreciated.