Fi Technical

hi all i have been planing a blowthru on my 01 tacoma using two fi q 18s and two soundstream trx2000ds. now i have come up with a few ideas for a box but was wondering if there were any pros out ther that would like to offer up some advice. i was thinking of having one sub on either side with a center slot port ond a combined volume of 22 cubes tuned to 28 hz. also i have heard pete from ttb has some great designs but he hasnt gotten back to me yet thanks

i am willing to use my whole trunk if necessary...you guys think it will fit?and sound good....i already know it will look good that thing is huge haha....also ...how should i wire it?...i have a t8002 for now but i am going to upgrade real soon...i bought the dual 1...any tips?

Does the recone kit come with the glue if not then what type do i need?

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.

Hey guys! I was wondering what any of you with a Q 18 set your crossover or lpf to? Also what type of crossover? Right now I have BW and LR filters to choose from, 6, 12, 18, or 24db/octave and 12 and 24db/octave, respectively. A simple frequency recommendation would be great though, hehe. I have tried many values from 70 to 180Hz but can't really decide. Are there any tests I could do to help me decide? Right now I have it at 127Hz 24dB LR which seems to be fine but I still feel indecisive. Thanks!

I recently found out my Tinsel Leads were blown and i'm not sure how to fix it... Is this something i could fix on my own? Or will i need to send it in? If so how much will it cost? and where do i send it in too?

I plan on running to Fi Qs in a sealed enclosure, using the minimum recommended volume due to space constraints. My power is a Zapco c2k 9.0 4ohm version. I can run the amp bridged or in stereo, so that opens up both the dual 1ohm and dual 2ohm voice coil configs as options. Since I intend to run sealed, I plan on ordering the high QTS option. So here is the dilema: I noticed that the T/S parameters are different for both the D1 and D2 ohm cofigs, and I imagine that the high QTS option further changes the T/S parameters. With that in mind, does anyone have any thoughts on which configuration would behave the best installed in the smallest recommended volume and usin…

This happens to me several times (actually everytime I turn up the volume). Just playing like 10-15 mins and I could smell the VC. When I touch its hot (not to the point where you can cook eggs with it) but just wondering whether I am killing the Q slowly if not quickly. the amp also runs hot but amps are made that way (thats why they have heatsink). Is my sub ok with it or is it with the low voltage and high current thinggy... thanks Wynold

Is a 2.9-3.0 cuft.(after all displacements) to small of a ported enclosure for the Fi Q?

I was wondering if 1.75 net cubes per side is too small for a set of 12 inch Q's???

Hey all, bought a 15" Q last night to mess around with and have some questions. Recommended enclosure is 2.8 to 4 cubes and tuning anywhere from 28 to 33. I need to figure out where in that range I should build. I listen to mostly metal, rock, blues/folk and on the rare occasion I'll crank some old school hip hop. I know kick drum is front stage and I will get flamed for this but I still like cutting my subs at 80 to get some impact for kicks out of them. I have a Kicker sx1250.1 that will be going on the Q so it will be just a bit over the rated limit of the woofer. It will be going in the back of my 07 extended cab F150. I toyed with the idea of going sealed but I …

I'm too lazy to A. Look down this page a bit to see the other 8 questions asking the EXACT SAME THING. & B. Use the search function. & C. Go read the stickys at the top of the page that list recommended enclosures for all of Fi's subs. ...so I figured I'd pollute the board some more with my "problem" that really isn't a problem, and doesn't need anymore discussion. Thank you.

I was told that I could check the sub with a dmm meter to see if its in good condition I got a 1.9 reading is this good, I think so just want to make sure? Its a 2 ohm dvc

anyone used there Q in a sealed box then switched to a low tuned ported 'round 29-30 hz or vice-vesa ported then sealed? if so how did it sound and the pros and cons. besides the ported being louder. was thinking of using a single 15 ported tuned low. but if sealed is more musical or sounds better ,can i make up the ouput loss by using 2 sealed

I'm getting absolutly no sound out of my sub it was working fine for about 10 minutes earlier and than i unhooked it so I could set the gain correctly with a dmm and after I hooked it back up I got nothing from the sub The first time I hooked it up at had it at 1/4 gain up so I'm sure it was not clipping and I only played it on low volumes, I also didnt smell any burning So could could sub be blown? Dvc 2 ohm wires parallel to 1 ohm off kx1200

Can it be done to extend the gap limits?

10” Q series ported and sealed cut sheets! 10” Q series sealed enclosure @ .5 cubic feet 10” Q series ported enclosure 1.25 cubic feet @ 32Hz 12” Q series ported and sealed cut sheets! 12” Q sealed enclosure @ 1.2 cubic feet 12” Q ported enclosure 2.35 cubic feet @ 32Hz 15” Q Sealed and Ported box cut sheets! Sealed @ 2.5 cubic feet 15” Q ported box 3.8 cubic feet @ 32Hz 18” Q series Sealed and Ported box cut sheets! Sealed @ 5.00 cubic feet Ported 6.9 cubic feet @ 32Hz

Other than thiele small params and the small pics, it's hard to know all of the differences.... the Q has a smaller pole vent? larger magnets? The single 2 ohm IB3 is a 2 layer coil, the Q is 4 layer. The Q's Fs isn't much higher than the IB3's and the motor doesn't seem tooo much bigger.... IF I had the extra $$$ at the time I would have gotten a Q because it would have been much better for my application, I could have gotten the dual 1 ohm coils and ran my Lanzar OPTI2000D at .5 ohm and everything would have been GREAT. But I only had enough for the IB3, and so I let the lower Fs and higher Xmax ease my mind about doing what i had to do. If I could go back in time, I k…

What is the lowest amount of watts to feed a 12" Fi Q and still get decent/good performance? I'm shopping for an amp and want to see what my options are.

Saw the Q10 is up on website, what is the recommended sealed and ported enclosure size, and tuning frequency for the ported. Thanks Never mind found it Q 10

The tech page says the cooling option increases power handling by 200-500 watts depending on install and scenario. Would I be wrong in guessing a sealed enclosure (in the neighborhood of 1.2 cu ft) would put it towards the higher end of that increase estimate?

How does this design look? aprox 4cubic ft

Scott / Anyone I had emailed Scott about this but I'll post here. Basically my questions is as below. I would like to seek help on my Q15 enclosure. I had builded a 3.65 cu.ft @ 34hz for the Q15. My specs and measurement as follows: Net Volume: 3.65 cubic feet Tuning Frequency: 34 Hz Port Width: 5.25 inches Port Area: 86.625 Square Inches Port Length: 47.5 inches External Dimensions: 34 wide x 18 tall x 22.75 deep Now, after installing and basically setting the amp crossover, subsonic filter and gains I found that the bass was muddy at times and lacked the lows. So I checked my amp setting even using scope just to make sure it does not clipped or distort. After listening…

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?

This is the box I came up with, but just by the numbers, I don't know what the response will be like and how smooth it will be. Box: 44"x18"x20" (outer dimensions) and 37.5"x16.5"x18.5" (inner dimensions using 3/4" mdf excluding port) Port: 4"X16.5" slot on left 18.5" long That should leave me with ~6.6cubes before displacement and a ~33hz tuning. Subs are running off of my US Amps MD2 at 1 ohm. ~1800w rms What do you think?