Fi Technical

I bought my SP415 dual 2 ohm back in October and received it in November and after only 5 months of use, the foam surround is ripped. I can't seem to figure out how this could have happened so any input would be great. Also curious if this is covered by FI's warranty. But here's the setup: -1999 Grand Prix GT Sedan -FI SP415 dual 2 ohm wired to 1 ohm. No spaced spider and no cooling (daily use, didn't see the need) -AQ2200d tuned to 2100 watts RMS using a multimeter -DIYMA oversized 0awg CCA power (appx. 22') and ground (3') with a 200 amp circuit breaker near the battery -Optima Yellow Top -Ohio Generators HO Alt (its an older model but I had them test it and it puts o…

I'm really considering using Fi subs for a new comp setup. Vehicle is a full size pickup, so it will be a blow through solution. The primary question is, which sub(s) to go with. Goals: 150db at headrest, 130db outside on music. It will be entered in MECA's spl and park and pound format. P&P being the 130db outside goal. The two goals are the max points I can attain for what I'm looking for. Obviously if it is higher that's fine. One individual at the 2012 finals did a 155/129 on 4 speakers in a wall (don't know brand and I think they were 15's). I was originally thinking of a single 18, but I'm not sure that will get there. Also, if possible, I'd like to keep the b…

Hi, idk if someone's read it in my build log but im looking for someone ho can create some blueprints for a dbdrag enclosure.. I'm also ready to pay a little tip for it so like said: Anyone out therer for help? I can give the max dimentionts if someone can do it.. faezich

does anyone have a blueprint that I can use for a single FI Q 10'' tuned between 28-30hz?

Hello guys, So I need some help with understanding what is going on with my trunk. I had a bmw sedan E36 style, 2X 12" Qs and a RF T15001d... I open the trunk the subs are not distorting what so ever at 3/4vol on the head unit after DMM the amp to the recommended RMS value, But i close the trunk and it sounds like complete hell in the car. Its like the bass is trapped in the trunk? Do you guys think i should make a new deck out of wood with huge holes in it, and cut the metal one out so that I can get some pressure loss in the trunk, so that the pressure will go into the cab? Also the box is at 4 cuin @ 32.5 hz, "thats all i could fit in the trunk, theres not alot of ro…

I've seen where eveyone says speaker terminals suck, so whats the best one to use? And if its bolt terminal, do i just put a hole in the mdf and put a 3/8" bolt through it? How do i hook the wires to it on each side? I realize this is probably about as noob as it gets too, but i mentioned big 3 to one of the big 'audio' shops around here, and they looked at me like i was an idiot for thinking there was such a thing (i'm saying this just to show you i have noone to learn from in the local area haha). Thanks

I finally ordered knukonceptz wiring today, and it should be here within a few days, and i'm planning on making one last trip to the hardware store. I was planning on screwing the sub in, but i really dont want to anymore because 1. not sure if it will be sufficient and 2. the image of silver bolts coming out the sides of the black sub seems badass So what size (diameter) bolts should i ask for? The hole is 3/16, but do they make a bolt that size? Thanks for reading, Mitch o btw, the sub is 18 bl, doubt it matters though.

I have an FiQ 15 and it bottomed out on about 5 notes for less than 30 seconds due to faulty ground wire. I was just wondering if any permanent damage could have been done to the sub? It plays fine now after securing the ground wire, but i'm just waiting for something to pop.

Just wondering if someone could give me some plans for a ported box. Nick told me to post here and someone would be able to help me.... sub - Fi Q12 amp - TXA 1000-D max dimensions: -Height - 16" -Depth - 18" -Width - 36" Thanks, Ryan

What kind of wood do i use for my box. Somone told me partacile wood

Just ordered a Q 12" 2ohm with cooling and spider option. This will be my first car audio setup so I am super excited. I know I want to go ported but I'm not sure if it should be firing toward the rear or firing up. It will be going in a 2000 Eclipse. Thoughts? I've been looking at amps. Thinking 1500W-1700W. I've read a lot of good things about Sundown amps. Was looking at the SAZ-1500D V.2 Then I came across the HiFonics BRE1600.1D and BRZ1700.1D both are priced at $200. Seems like a good deal vs. the $525 for the Sundown. Anyone have any experience with HiFonics amps? Are they any good or should I just save a little longer and go with Sundown? I'm really a noob to …

i want to get a 15" BTL and put it in a 1999 dodge stratus. i cant decide if i want a ported box with the BTL firing at a 45 degree angle towards the trunk and have the port firing towards the seats (i currently leave my back seat down, it is MUCH louder). OR go with a sealed box with the BTL firing towards the seats with my back seat down. i was thinking a Hifonics Brutus 2406 for it, which is 2,400 watts RMS at 1 ohm. i would get it fully loaded. PLEASE MAKE ALL THE RECOMMENDATIONS YOU WISH! another thing is the new BTL's, there is no triple stack magnet!?!?!?!?!?!? it is just a single magnet, why would they to that???

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 have 2 15"se/xxx's i wanted to know how much power should i throw at them also what do you guys think for a box. im looking for a loud DD. do you think of 9 cubes before sub and port displacment and 135" of port tuned to 35hz's

Hello, I have been thinkging about buying a new sub and one of the members of another forum I visit is always raving about Fi subs so I decided to have a look for myself. I have been trying to read up on the forum and think I have decided on a sub, but I am not too sure about the box. Based on what I have read it seems that a 12" Q is what I am looking for. I want a good sounding sub with the ability to play low and loud. I only really want 1 sub as my trunk space is limited and I'm not trying to win any spl competitions. Basically it will be in my daily driver. Right now I am still in the research stage but have no clue about a box. I don't know if sealed or port…

what is a good rule of thumb for box bracing?

15" btl fully loaded, box is 4.5^3 at 34hz. Install will HOPEFULLY be next friday. i know i didnt do that great with the carpetting, and yes my 20.1 is a little scratched up......

Ok here is my question, If I cut the circle out to the circle in the specs will the SSD fit in there ok? If not what size should I make the circle. Here is the plans (I changed up the baffle so it would not be between both sides) Pics:

Well here it goes, I am planning on running 2 18" Q series Fi's in my daily driver(2000 GMC Safari). I need box design ideas for this aplication, I want it to be more aimed at sq then db. I am running a Alpine pdx 1000.1 to each 18 at 4ohms at 1000watts rms. The room I have available for the build in the back measures 50 inches wide by 34 inches deep by 21 inches tall. plan on useing 3/4 mdf for box. Pritty much need to know everything what hrz to tune it at, How many ports, what size ports, slot ported or round. Let me know what you think any ideas would be a great help. Also when are the Q's going to be available to order.

Hello everyone well I just orded 4 Q15s dual 1 ohm and bp power the box im building will have 2 seperate chambers, with 2 subs per chamber, with about 5 cuft per chamber,is that enough space?this is a sealed box. Also i will be using 3/4 inch MDF board to build the box, I will be putting double layers on the baffles, should I double layer all the other sides of the box or should I just brace inside to the single layers? thank you .................Brian

for 15" btl fully loaded. i cant get my comp. to take a screen shot, but the dims are... 4.1^3 45^2 inches of port ~33 hz going to be double baffled. but i have a Q, how far away from the back wall does the motor need to be, sine btls dont have a pole vent, i wouldnt thik it would matter as long as it isnt touching, am i correct?

hey pm me or shoot me an email at [email protected]

hello everyone, can someone tell me how to tune a subwoofer box or knows of a good online calculator thats is acurate??? i need a box for two fi bl15' s i got 43 inches wide and 18h to play with in my trunk. i have a rockford fosgate t215 sitting here next to me now. before a met my fibl15 i thougt t215 was the best sub out there on the market, very well desinged but after putting my fibl15 in the same box same amp i was like wow it gets louder than my t2 so im getting another bl15 and I AM A sell the rockford, to be hones i never tought the bl15 would sound better than my t2 since it weighted a lot less was a lot smaller i really was disaponted when i saw my fi its not…

Just wondering what is a good box calculator that is user friendly?

Does this look good?