Fi Technical

So I have been driving a single cab truck for close to 10 years now. I've always liked car audio and I went from a shitty 10", to a really nice Ascendant Audio Assassin set up, which was pushing the limits of what I could fit in a Ford Ranger. Got an F-150, but I didn't drive much at that point, so I kept my Assassin 8"s and hifonics amp. But I'm getting a Ford Focus hatchback now, and I have been wanting a Fi Q for years, so I want to do it right. I was originally thinking two 12"s, but that seems like it would be a nightmare to power (3000 watts RMS can't be cheap o.o). So I figured a single 15" would be a nice middle ground. I have no idea if I would want to go porte…

Ok, I am a ported enclosure built from pound that sound for 2-12" Fi Bl subs. I built a cardboard box like he asked as big as possible to fit in my trunk. It ended up being 39" wide x 13" Tall x 15" deep. This was sitting on the ledges on each side of the trunk and the spare tire hole being empty on the center. The box has to be dropped in from the top and has about an inch and a half gap on the top, and the side facing the rear of the car. Will this be enough space for those subs? I notice it asks for 1.8-2.5 per sub so I think I am a little small unless I would extend the bottom center of the box down into the spare tire well. HMMMMM?

that is 1.5 cu.ft after displacement at 35 hz,has anyone here done this? if so,how did it do ?

i know every car is different. i have a civic sedan 98. my btl is firing forward with the port forwrd. i was wondering will it get louder if i face everything towards the rear of the car.

Does anyone know what the F3 for a pair of X 10's sealed in 1cft will be? Will be at 800~900 wrms for the pair. I listen to metal-hard rock, with the occasional techno/hiphop just for show off. Trying to save some space and these woofers call for some tiny sealed numbers so I think this is the way to go.

I recently bought a sp4 and i have it powered by a hifonics colossus, im getting a 350 amp alternator and just wondering if i need a bigger battery? Whats the point of a bigger battery cause once the car's started the alternator takes over for the electrical system right? The 350 amp alternator should be more than enough to give the amp all that it needs right?

Hey to every one i would like to know the shiping weight of 15" BL its kinda urgent thanks for the help

I got a pair of Q15's yesterday. I put them in the box which is 3.5 cubes tuned to 28hz and they sounded different then anything else ive ever heard. As much as everyone praises the low-end ability of the Q it seemed to me that the higher notes(40-60hz) sounded louder. The low notes made a popping sound that sounded like it might be hurting the speaker. I called someone who runs the ssd series and he said he had the same problem. He told me to tune them to 32hz and it would fix it but the whole reason i wanted the Qs is to hit lows. Should i give the speakers some time to break in or is anyone else having this problem. 2 Q15s 2 MTX TA81001 Thanks Keith

i have a 01 saturn L300 4 door. i pulled the back seats out and throw a bl 18" back there. now, im going to be getting another bl 18". this time the 2 will be in the trunk. how should i have the subs firing and where should the port be located. (firing). the backseats will remain out for my amp rack.

ive had my bl 12"( just one) for about a week and its broken in but it doesnt get as loud as i want it too. so im thinkin i may have messed up on the box. can anyone take a look to c if i messed up on the box? dimension: 14.00" h 14.50" D 35.00" W Total inside volume BEFORE sub & port displacement = 3.15 cuft Port dimensions = 3" X 12.5" x 36 (L PORT) Port volume = 0.95 cuft Sub displacemnt = 0.15 0.95 + 0.15 = 1.1 cuft. 2.0 + 1.1 cuft = 3.1

Right now i have a 15 d2 Fi BL its sick... but i cant leave it alone... soooo any opinions on the power handling on 2 Fi BL 15's? and any suggestions on a amp to run both of them on? im thinking about reconing my older Bl but its up in the air for now... so any opinons?

i don't really want to take up the whole back window up i did some measurements and i can do a box that's 52.5W x 24.5H x 16.5 deep. externally that's 12.28 Cuft 10.18 cuft internal. After displacements of the 2 18's and 3 6 inch aeroports that are 12 inches long each it gives it an internal volume of 9.083. will this be enough for 2 18's for bass racing the 140-149.9 class? i am ordering 4 Sundown 1500's when jacob gets the new ones in. i plan on strapping at 1.4 so each amp will see .7. i also will have 6 optima group 31 yellow top batteries.

I am thinking of putting my BL 10" in my 12" fiberglass box. I want to cut a new baffel to drop into the 12" cut out for the BL to mount to. I am wondering if I will damage the sub being the box is bigger then recommended, I think FI recommends 1.2 max, I dont know how much the box will be after displacement. I am going to be powering it off a RE 12.1 1200 watts rms. What would you guys suggest? I am contemplating doing this because my 1.2 cuft box is flipping over when I mount the sub inverted. It wont drop into the cutout because the basket and terminals are just touching, also, the fiberglass box is MUCH lighter than my MDF box. Let me know what you guys think.

Hi guys, I used the cut sheets for the fi btl 12 inch before. Was wondering if anyone has any cutsheet for 15" sp4 in sealed enclosure. Just for daily setup powered of a saz 2500d.

can anyone explain what each acronym or letter means and what option/s it represents? thanks guys.

I was going to put 2-18'' Q's in a ford excursion until I heard ONE 15'' BTL fully loaded in a excursion powered by a hifonics BXi2006. The box was 3.5 cubes net @ 33hz. Let me say that it was loud!!! I want to run 2-18'' BTL's fully loaded on my new TE4001D amp!!! Would 2-15'' BTL's hang with 2-18's? Or will the 18's smoke the 15's like that? I really want the 18's and if I put each one in 5 cubes @32hz what will happen to my excursion?(Each sub will see about 1800 watts each.) If I use 5 cubes or 8 cubes per sub what would it do to the sound of the box? I want my X to fall apart from all the bass and I want it to be LOUD. What would the Fi Audio Guru's do...

Need to know how much a recone would be for this sub. Thanks

I need some one to send me a template for a 15" Btl So i can see if i can fit them before i buy them. Also so i can get the holes cut for once they come.

want to know what fi soft parts to beef up my aa12" havocs .will the motor support an spl optiion or would it be better daily, or in between. .......... FRANKIN HAVOCS ON THE WAY????????!!!P.S. CAN YOU GUYS HELP ME!!!!!!

I really need an RA# for my bad sub. I have called and sent numorus emails but have received no return contact. I have been emailing and calling from December and even tried to find you at CES. Please someone contact me so I can repair my sub. I have all receipts and have all the emails dated to show I tried to contact you before my waranty expired. Thanks, Mel.

Ok i need some help on picking out the amp for my Fi BTL fully loaded i have to amp choices tell me wich one you think is better or if neither of them ar good Amp 1. XT4000DE V2 1,500 watt RMS (4000w peak) mono car amplifier Class "D" fully digital power supply 4000 watts peak output 1,500w x 1 RMS @ 1 ohms 800w x 1 RMS @ 2 ohms 500w x 1 RMS @ 4 ohms Bridgeable Efficiency: 86 % @ 4 Ohms or 84 % @ 2 Ohms or 76 % @ 1 ohm Fully adjustable butterworth low pass crossover filter Low Pass Crossover Filter - Adjustable 40 - 250 HZ @ 24 dB per octave Adjustable Bass Equalizer: 30 dB Bass Boost @ 45 HZ Subsonic Filter: 15-…

says they're rated at 1000rms im getting 2 18" BLs d1s with cooling options, could they handle 1600rms a peice? my box is built its 8.5 cubes (before sub displacement) tuned to 35hz

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…

I have been searching all over the internet to find out about qts (never even heard of it before i was looking into Q's this isn't my first system, i just never accounted for it before. it looks to me like it is highly dependant on what you are doing fi q 15's have the cooling and spider upgrade options, that is it i am going for sound quality with this build, dual fi Q 15 in a sealed enclosure measuring ~ 2.3 ft^3 per sub (after displacement and bracing of course) each sub will have it's own rockford fosgate t-1500-1bd giving them ~1350watts @ 2 ohms (already had one and just bought a second off a friend, who said headroom was a bad thing) they will be in the back…

So after selling my Avalanche, i put my 2 13kv.2's back in my car. This is when i realize how amazingly low the avalanche gets. I am almost set on purchasing a 15" BL to replace the avalanche, but i just want to be sure that i will not be dissapointed with the low frequencies. I know it will get loud, but hell my 13kv's matched my avalanche at certain frequencies too. (BL will be on 1200 watts in 3.5 @30hz if it matters much) Anyone with experience with an avalanche as well as a BL (or other Fi sub, i assume they are a bit similar) please give me some input. I want to be absolutely positive that the BL will be $300 well spent. thanks.