Fi Technical

Hello all. my enclosure will be finished soon.. like i haven't a lot of space in my CLK trunk,i have made a 3.6 cu ft @ 33hz box(after port and diplacement... 55 square for the port area). So do you think it's good for daily? (no SPL competitions)... low will be good? good SQ ? value for the subsonic? I have ordered my amp, a "little" Digital Designs Z1 this beast give 4000-4500w/1ohm at 12v.. my new batt is a NSB90(enough for the Z1) give me your ideas,pronostics i'll be back with a video soooooonnnnnnnnnn... ps:Scott,like you have told me,i have dropped my car ....2inch with the total weight

like the topic says im experimenting with my RE MT to see which coil amp combination will work best, so I would like to know thanx guys , and is there a longer version of the original dual 0.7(actual quad 1.4) coil ?? im in dire need of xmax to get louder... im hearing slapping when i get that sub moving alot( could i be bouncing off the dust cap? I dont think im bottoming out)... last time i ripped the coil right off of the spiders (quad stiff) that was with 4 ab 500.1 gain all the way down ( only got them to produce 75xx watts before sub exploded)or should I be using a different basket with 10" spiders? btw this is a 15" with 12 spoke basket

Hey guys So here goes Have my two Fi Q18's off a JBL BP1200.1 When i first installed them they moved in phase perfectly it was actually awesome to watch ! Now they dont and output is down noticably, So.. .. I pulled each speaker out of the box and checked for physical damage, none, no burnin smell AT ALL and no loose glue that I can see, second i Tested each speaker on its own, works fine, i checked coils, fine they all show up the same. Im runnin dual 2 ohm in series parallel and am getting 2.2Ohms on the VMM for my final load , fine.. Speakers were making a funny noise sort of a raspy sound right after they stopped working in phase... Unhooked em right away , checked, …

Could I use a Brahma's 12 spoke basket on my BL, with an Fi recone kit to upgrade my 10" to a 12" ?

Hi everyone. I've been reading up on Fi Car Audio and in particular the Q series of subwoofers. I really can't wait to start getting my cash together for one of these bad boys. However I have a small knowledge base problem. I don't understand the exact effect of a larger box volume for a subwoofer. In particular I've read that the recommended box size for a sealed Q 15 is 2 - 2.6 cuft. Now, would the subwoofer get louder if the size was 2.6cuft vs 2cuft? There is more air to be moved in a 2.6 vs a 2 correct? But if this is true then would there be any other effects of having a larger box beside the obvious space consumption in the trunk? Bonus question: I listen to a lot …

Is a btl capable of free air setup?

I didn't think that I'd do this but. Heh, it happens. I'm a complete boxbuilding noob. I know how many cuft Fi recommends and how much port area they recommend. But, I've tried my hand at it and failed. But anyways, Here are my max specs. 49 inches wide 27 inches deep 16(I may be able to squeeze 16.5 out of it) inches tall I'd like to do the port either on the left or in the middle. But, since I have seen/read/heard loading problems I'm pretty unsure as to what to do. I may be concerned about being loud but i would much rather have my woofers happy and lasting longer. I love reading posts about box tuning and loading. Since that is probably the only area of car audio that…

I'm trying to decide on a sub for my car, and design an enclosure for it. I listen to a lot of drum and bass, so due to the wide range of frequencies, I've already decided to go with a sealed enclosure, and I have a Hifonics BXi 1606D to power the sub. My original plan was to go with a 10" Q, as I figured it would be more than loud enough, even sealed. The issue I've run into, however, is that I want to mount the amp on top of the box, to keep things more compact (take up less trunk space), and to make the box and amp easily removable for autocrosses. The problem I'm having is that once I make the top of the box large enough to hold the amp (~11.25 x 14.5), and make the b…

Ok this is a repost from yesterday, but I never received any responses. So i am reposting in the technical section. I currently have a Memphis 1000D left over from a previous setup (4 - memphis PR 12"s) in a blazer. I have since sold that vehicle, but still have the amp and speakers laying around. After learning about Fi Audio and reading more and more about them over the past week. I am interested in purchasing one 12" Q to go under the rear seat of my 05 Ext Cab GMC Sierra. I want to use the existing amp to power the sub. If my memory serves me correct, it is capable of 1100x1 RMS Power @ 1 Ohm Mono (14.4V). I'm wondering if I should add the BP option to the sub to allo…

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?

ok here goes we have the box made (except for the ports) it's 19.3 cuft after dis. for subs(3 18 btl fully loaded)and bracing, i still need to make the ports........just to give you guys an idea first i cant make just 1 large slot port would have to be 3 at most (med. size ports)and i would like to tune it around 33-35hz oh and the ports would be facing the same way as the subs it's somewhat of a wall/slant design any help would be highly appricated ............................. thanks ahead of time...........................

Hello guys, I am new to this site, and just getting back into car audio. I am planning to run a 15" Fi Q powered by a Cadence TXA-1000D. From what I have read I will benefit from a ported enclosure because I like to listen to rap and music of the like. I was planning on using a slot port enclosure because of the area required for these ports. I have used WinISD properly I believe and have gotten a 3.5 cf chamber tuned to 32 hertz. I used a port size of 3x16.5 and got a length of 29.35 inches. Does this sound remotely close? I also have a question based on sizing the box as I am having trouble fitting a box this size in my trunk along with two cadence amps while maintaini…

How do you guys go about breaking your sub in? Do you let it break itself in overtime or do you play a nice tone to help exercise its suspension? Well I should be receiving my 15" full loaded BL today and I can't wait till I get home to get it so im looking to exercise the suspension so that it can be broken in for the weekends upcoming local comp event.

looking at an 18" Q in a 4cuft sealed box....would a us md-1d be too much for power, or should i look into the bl line?

I'm currently looking at components to go with my 12" BL. I'm going to either go with Rainbow SLC 265s or SLC 265 Kicks. What I was wondering was with my box tuned to 32 Hz would my BL get loud enough up to 80 Hz to be able to have my high pass at 80 for the Kicks? Thanks

Well I've finally decided to stop being lazy and put my BL in my truck but I ran into a problem while figuring out the port length. I have a 12" BL and I want to put it in a 2.5^2 ft. box tuned to 32 Hz. To do this with 2 4" aero ports they are gonna have to be about 24" I would just do slotted but since the box has to be slanted down on the top and up on the bottom I'm not sure how that would work. So I'm wondering if i could just use one 4" aero or if there are any other thing I can do to make this work. Thanks

My current box pounds in the 30-32hz range and I love it but I also love to compete in local competitions so I need a new box for all out spl. My trucks frequency is 41hz. Can someone help me with the correct box volume and port specs for a box that will peak at 41hz for spl only? The subs are a pair of Fi Bl 18s. Thanks.

Hey guys and gals, I have been slammed at work with all our new server upgrades and 32 new users that we hired, and I am the only network admin for a company with 55 inhouse users, 2 servers, and 21 remote users(<---- the worse part, remote users). I have gone through all my email and Im's, if you have sent either to me, and it hasnt been responded to, please resend and they will be done promtly. Thanks Shawn

Let me know your thoughts My dimensions are as follows: Height- 15 Width- 35 Depth- 21.5 Port Dimensions: HV- 13.5 WV-4.5 LV- 24.75 35 hz tuning... Should wang?

i will be buying 3 12" q's in the future with the bp option but was wondering what VC comes in these, the site just simply says 3" 4 layer coil. is this a flat coil, or a copper coil or what, i was reading the coil options listed and it would seem to me that a copper coil would be best in this with it being a SQ orriented sub, but correct me if i am wrong. Will be running these off a Sundown 3000d on a daily set up that will see comps ocassionally wired in a series/parallel combination to right at 1 ohm. FI guys prefered on replies as i am looking at thier view point being that i know they know thier products better than no one else. no offense to anyone else there so pl…

Hello all. I'm getting ready to purchase a Fi Q 12 and a Candence TXA-1000d amp and I was wondering what the optimum enclosure would be for my application. I drive a 97 2dr Exploder, and listen to rock/metal.......lotso heavy stuff. I want the sub to sound as clear as possible when hitting the bass lines and bass drum and still have a nice thump too. So, if anyone has any ideas for specs for me that would be frickin' fantastic! Thanks, Mo

to whom i can talk to about dealing this product " fi car audio" here in our country? i already emailed it at [email protected] but still no one's answered , hope some one could talk to me about this. thank you very much

i know you guys are buisy and all but i have been trying to get information on gettin my 18'' BL either warranty or a recone because one of the voice coils only works sometimes. but i have a competition coming up in a couple weeks and i really need this sub fixed in order to get the points i need to go to state finals.

I would like to get a replacement gasket for 12" SSD,is it possible?........Also whats a good size sealed enclosure for 12" SSD ?

Right now i have my 2 Q 12's in a 5^ft @ 33hz with 71sqin of port box. I was wondering if I built another box same size and tuning(might tune to 32hz) but with 80sqin of port would i notice any difference in sound?