Fi Technical

I got two 15 inch BLs and I would just like to know how to tune the enclosure port to 33 hz? Is there some sort of program that could show me how?

I was really hoping some one could help me out with blueprints or a layout for the idea enclosuer for this sub int he space i have to work with. car is a 96 cadi fleetwood brougham rwd i measure it out and The max demensions are H 16 W 42 L 28, i would like a box with 45's in it if possible. i only listen to bassy rap and r&b jezzy,gucci mane, etc for examples. ported obviously tuned to 32hz? again this if for a 15 FI BL fully loaded help woul dbe GREATLY appreciated.

Can anyone recommend one? I purchased a dual 2 ohm Fi BL 15 and my current amp does not have a subsonic filter (which the install guy says will be needed to best tune the system). Some of the amps on the SSA website don't tell me what load they are stable at in Mono.

I recently hooked up 2 Fi BL 10's to a pdx 1.1000 connected to the battery by 4 gauge wire. Within ten minutes of playing i had blown the fuse coming from the battery to the amp. I was wondering if attempting to run this setup off 4 gauge wiring is hindering the ability of the system and if it would be beneficial to up the wire to a 0 gauge. Thanks in advance for the help The fuse was a 10GA stinger fuse, switched to a 25A raptor ANL fuse & holder after burning the fuse. I switched because the stinger fuses were too spendy.

I took my woofer to my install bay today and they were shocked I wanted to tune to 33hz. They felt that was way too low. Now, I listen to all types of music, pop, #1 hits, old school rock etc... but mostly Sirius hio channels and some Ipod songs (JayZ etc...) I just want to be sure this box is tuned to where I need it to be. He wants to build it to 4 cubic ft and tune it to 38 - 40hz but I see almost everyone on here tuned lower. Thoughts?

I have a company to build my box, but I am not feeling very comfortable with what they are capable of. So, I want to show up with ideal measurements in hand and make sure they don't make a mistake. I have a 15 inch BL fully loaded dual 2 and will be running 1000w RMS to it. I need to build the box into the spare tire well and up a bit. I want to know where I should fire the port and roughly how many sqft I need and how to configure the port. Currently, I have a sealed box firing straight up. Its okay, but not great. The sub will be at he very back of the trunk, should I fire the port at an angle towards the rear window with the sub firing up?

Hello, Today I pulled my Q12 from the box (Dual 2) and tested both voice coils. They seem to settle at about 1.4 to 1.5 ohm. Is this normal for a dual 2? *It has not seen power yet.

i have designed a 7 cft enclosure for an 18 btl. the volume is with woofer displacement. how do i calculate a port to 30 hz then? is this ok?: 4,72" * 19,69" * 29,92"

Alright, so i finally have all the pieces together for the btl. Alternator, battery, amp, wiring, ect. So now to this whole... building my own box thing. i would prefer around 32hz and 7.5-8 ft^3 before displacements for sub and bracing. I have 3/4 inch MDF (its actually 11/16ths). So one question is how do i brace it properly? And... i need box calculations for a standard Sub facing up, port facing back of vehicle design. I really like Mac n' Cheese's idea of coating the inside of the box with resin, i might do that. so 7.5-8 cubic feet, 32hz, and the dimensions i have to work with in the back of my explorer are 44.5" wide, 25" tall, 22" deep. Maybe 30" tall if it make…

I just bought two 15 fi Q's with BP and a aq2200 to power them at one ohm. Running 0ga and doing the big three also plan on another battery and a HO alt soon. My question is with the box setup,its my first time buliding one and would like to do it right. The max demensions are H 16 W 42 L 28,.(ported) i was thinking around 32 or 33 hz.. But i could be wrong? i want the lows and alot of bass but sound good aswell. my other question is should i put a divider and run a port for each sub or have them both to one port? Any input is helpfull thanks

The 15 inch BL box recommendations are (BL 15 – Ported box we recommend using 2.8-4 cubic feet @ 28-37Hz. Again use 12-16 square inches of vent area per cubic foot of volume) Im not exactly sure what size and hz i should tune my box to. I have one 15 BL fully loaded ment for daily personal use. Any recommendations on what will give my the best bang for my buck?

Can a pair of Fi Q15's be ported and tuned to 30hz in a properly sized enclosure, if my max external dimensions are 22" (d) x 19" (h) x 38.5" (w)? Less height and depth if possible... I was planning on running them sealed, since I know they have great lowend sealed, but if I can still have great lows with more output, I want to got for that. This is for a Dodge Magnum. My goal is to have the most output while maintaining a somewhat flat response, with the gut twisting lowend.

i want to build a new enlosure for my 18 btl. ive never done any bandpass box before and now id like to try it. do you have any suggestions or a website were i can find a good instruction how to build a 6th order bandpass (calculator)? i have a suv and ~10 cft of space.

A while back i bought 2 SSD 10s with no options. I am still confused on what to push them with. I have my eye on the Rockford Fosgate T-1000bd. Any suggestions would be great. Also im still not sure on what enclosure i want to make for them. i have run sealed in the past but not sure if i should go for ported with these. Thanks in advance.

Anyone have any experience with FI Q 4th order bandpass boxes? I'm thinking about doing one for two FI q 12's. I've heard they really help to eliminate trunk rattles when you port them through the deck. I have 2200 RMS to work with.

Im getting ready to order the Fi 15 BL, i have a 1000/1 jl audio amp. Im not sure which is better dual 1 or dual 2 ohm? Is one better than the other, or does it not really matter?

The other nite we were changin the box my fi's are in and the drill slipped and went through the rubber on the subwoofer.. He said if we put rtv silicone on the inside and outside of the cut it would be ok but Im not sure any help would be good

i currently have 1 18 btl in 7 cft box ported. but i have another btl which is stored in my room ^^. the problem is my trunk will only fit a 10 cft box without displacement. so would this be ok or should i stay with one btl and sell the other? would the volume increase with that small box?

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.

For my Alero trunk I'm eventually going to buy a BTL 18 D2 with daily/all options. This is the cheapest & loudest daily setup I can think of and I've drawn up a shizload of boxes. I want lots of bass but don't want to shell out for a huge amp, alt, and batts. Power will be maximum 2000-2200 watts @ 1ohm unless I can borrow a huge amp for burps if having 1 fully charged battery will git-r-done. I will buy 1 battery and upgrade the alt if I have to but nothing crazy. RE Enclosure Calculator 1" MDF with 1" double baffle and no other bracing besides rabbit joints which I still am not sure if to use .25". 37 width x 28.72 depth (29.72 with baffle) x 20.5 height Displacemen…

so i have a question? i have a Fi BL 12 that i beleive has a blown voice coil (soon to be fixed) but i was looking on the Fi re-cone page and started filling out the details and it asked me about the basket and the stacks? can some one please explain to me what those options mean? Every one input is aprreciated.

Hello, I'm thinking about getting 1 18" bl sub pretty soon, so I'm designing the enclosure now to make sure it fits. I have a 2000 Crown Victoria Police Interceptor, so the trunk is pretty big. I want to do a sub up, port back enclosure, but I'm open to anything. I'd like to get it around 7ft^3. Here are a couple pics from a crown vic's trunk. I wrote in my trunk dimensions on one of them. They are (as accurate as I could get ) 26"D x 41"W x 20" H (13" clearance under the spare tire, 20" for the whole trunk) Heres a video with the kind of enclosure I would like to build Would this be possible in my trunk? Also, what dimensions should I be looking at for my port? I'm a…

Hi, I have had my BTL 12 for several weeks now. Its fully loaded and only receiving around 1000 watts rms (PDX 1.1000). The enclosure is 3 cubes after displacement at 34 hz. On certain notes, i hear a popping noise. The notes are almost always higher notes. The spiders and leads look fine, but i dont have much experience with them. Is it possible that i am reaching the mechanical limits of the sub in this box at less than half power? Amp is not clipping to my knowledge. Voltage is stable when the noise sounds (less than half gain, no bass boost). Oh, and the popping is only heard at half volume plus. The sound sounds like its coming from under the dust cap. Any i…

ok so ive had my sub for less than a month and today i heard strange pop. so i went to take a look and it just sound like a screw was loose. so i took the sub out and it wasn't that. Then i played the sub out of the box and when i turned the volume to about 30/62 it started making the same noise. it sounds like its coming from the center of the sub. so my question is what could it be.

whats up! im running a D1 Fi Q12 with a DSC2000.1D @1000watts...but its in a pos pre fab box. I want to step up and build a box with these specs 2.5cf @ 32Hz how do the dimensions look, will this get me to 32Hz?