Fi Technical

which fi sub would sound the best in my ~7 cube box. its about 3.5 cubes before port so about 3 cubes per sub. the box is tuned to 29hz and since its the biggest possible box i was able to make that fits in and out of my trunk with ease thats all i really wanted. so i want to keep the box but by the specs of the sub which would get loudest in this prefab box.

By the end of next week I will test the sx 15 with dual 2's, and the Bl 15 with dual 2s, and p chamfer. I will test them both in a 3ft3 enclosure tuned around 49hz. Which do you all think will be the Louder sub? I'm not going to post the results, out of respect for the two companies.

I am buying 4 15's and I wanted to know which was the better choice. I understand that they both have the same RMS wattage I am going for more spl and lower bass. I wanted to know which sub would produce more bass in the lower octave. I have no problem as far as space I just wanted to know which produces more output.

which of the old 3 slug options were cosidered basically universal, D1 or D2. i bought my btl from teampsi on ca.com, on his ad he said its a D1 so its basically universal. i have read else where that the D2 were the ones considered universal. can anyone clear this up? im about to order a recone, and i want D2's but i want to make sure it will fit! thanks fellas

I was going to order these options: D1 Cooling Flatwind Daily Do I need Extreme lead? My setup will be 2 18" FI BL connected to Sundown 3000D. This will be my daily setup. Thanks,

I want to build a console box in my single cab truck and im trying to see which would be the best. Setup 1: 2 Fi X 12 D4's ported Setup 2: 3 Fi X 12 D4's sealed Setup 3: 2 Re SE 10 D4's ported or sealed Setup 4: 2 Fi SSD 10 D1's ported or sealed Only reason im considering Setup 3 because I can save about 80 dollars on the subs over Setup 4. And im trying to be louder than a buddy of mine with one RE SX/BL 12 Hybrid ported as a console box.

Having 3000 watts on tap, which can be made louder in a large ported box? 4 SSD18's or 2 of the more efficient BL/BTL's? TIA, Carl.

i have around 900wts at 2 ohms looking to do a single 15" ported box. listen to rap and classic rock. which would work best a Q or ssd wth copper vc.

I have 4 15" kicker's in my car right now running off 2 hifonics 2006's. i am thinking about putting either 4 18's into a truck or 2 18's of the trunk of my car. i want to flex and have a lot of bass. i already sound loud i my car but i want more. do you think i am jumping out there to far with purchasing 4 fi btl 18's? and if so what sloutions do any of you have for me to get flex and more bass? I will probably using the same amps or buying the slightly higher rated brutus. Oh just fyi the car is a lincoln towncar

In a Grand Marquis, 2 15inch BL's on aq3500d or sundown 3500d. Or one BTL 18" on same either of the amps. or 2 18" BLs??

i have 2 15 qs and i was planning on putting them in a 08 honda accord, any suggestions on whut box to throw them in, ported?sealed? really not sure on whut direction to go with this

Look at title. As an example, a 15" Fi SSD both D1 and D2 have the same specs except for a 40% higher BL on the D2, can someone please explain what is happening that makes this configuration have that much more motor force?

Ok well I figured I would come here since Fi does not seem to like to email there customers. I bought a Fi BTL 18 fully loaded from their website last summer and for the past 5 months it has made a popping sound. It would do it pretty randomly but usually around half way up. Well after about 5 months the sub seized up. I figured it was the voicecoil, had probably come apart.So I begin removing the cone then the spider when I see that the voicecoil is fine. It was the motor, it had been rubbing up against the voicecoil eventually causing the sub to seize. I pulled out the voicecoil and the motor just snaps against the side what a headache! Im looking at the basket now I …

whenever i plug in or out my mp3 player into the stereo my Fi Car Audio SSD 12 makes a pop sound .. so when i was playing my music i gradually made the volume louder then all of a sudden the sub will pop and start this loud humming noise.. i dont think i blew it because i played it again and it sounded fine until the pop and humming sound came again

I am new to car audio and need some help. Im not sure if i could fit an 18'' Fi BTL will fit in the trunk of my Toyota Corolla. Thanks

I didn't take into account where I was going to put my amp when designing this box (which is going to take up my ENTIRE trunk...so I had to pull one of the walls in slightly and that brought me down to only 4.7 cubes net after port and sub displacement...is that too small? Will I see any adverse affects?

I plan on running 8 ssd 10's. 2 per box at 500 watts rms each. Each box will be 3 cubes before displacement tuned to 33hz. I plan on running 1 4" aero port per 2 subs. Do you think I will get port noise with that size port on only 500 watts? Thanks, I hope that wasn't too confusing.

i have a home audio 15" powered sub that needs replaced was wondering if could drop a IB3 in it if it would be alright? Thanks Jesse

i have an fi bl 12 that is practically brand new that i had bought for the honda i thought i was going to be using well now im stuck with this sub and want to put a system in my dodge megacab but havent been able to sell it and am not sure i have enough room back there to port it. i have been out of the game for a while so any help would be appreciated.....thanks

Just as the title says, I may be getting 4 Ssd 12s in a trade and I'm. Doing a blow-through in a Toyota pickup and was wondering if they. Would perform well in a 4th order band-pass. Thanks

So, after much nagging, my old lady talked me out of doing the pacman design with 4 15" BTL's in the bed of my truck cause it would take up every inch. So, will I be able to put 3 15's straight across the bed of my truck so that I have a little room to put stuff towards the end of the bed in my truck. Or will I have to go with two BTL's. 6'6" front to back 5'3" wide 4'1" wide between wheel wells 1'10" from one end to the wheel well 1'8.5" from other end to wheel well These are some dimensions I got from one of those custom fit rubber mats for the bed of this truck. I think the bed is about 21" deep. LOL, my old lady thanks you..........

Will be doing a 4th order for a single 15" Q. Was going to make the sealed chamber 1.8cubes and the ported chamber around 4 cubes and tune around 44-48 with 16-20" of port per cube. Does anyone see any issue with this...

im looking at the hifonics bxi2607d amp. Its rated 2600 watts at 1ohm. From what i have heard ( and also from personal use) the bxi line is over-rated by about 200-300 watts. This amp is a little different from the other amps in the bxi line. For one, this is the 2007 model. Also, this one is strapable. Does anyone have experience with this amp? I want to know if this amp will be able to push a loaded 15" btl and sound good enough doing it? i dont think im going to get the $40 cooling, just the $10 one. I am going to run it off of a 140a alt, 2 batterys (one of them a yellow top), and do the big 3. I also plan on using a 5 farad cap. I read a thread on roe that they are u…

My buddy has 2 XT-4000D amps made by US Amps, I was wondering if 1 of them would work good for a dual 2 ohm 15" Fi Btl Subwoofer

Will a 3.1 cuft enclosure (after all displacement) tuned to 38 hz work for a 15" Fi Q? With the size of my truck, this is the largest box that i could fit in there. How will this work?