Fi Technical

Hey, This will be my first time buying FI subs and just had a question about what I should buy. I was gonna get two 12" FI BTL's and power them with a Sundown SAZ-3500D amp when it becomes available. Under the amp specs it says: ----RMS power, 2 ohm linkable/dual mono 6000W x 1CH ----RMS power, 1 ohm mono 3500W x 1CH I'm confused as to what the difference is would I be able to get 6000W to the two subs if i got the 2ohm versions? or should I get 1ohm? If I can only get 1ohm will 3500 be enough for two of those subs or would that be very underpowered? Any recommendations on the box size and port size would be greatly appreciated as I will have it made by someone. I'm …

Hello, I'm new to the forum and would like to say to the Fi section I've done a lot reading here and searching but never really found the answer I'm looking for. I already have a Kicker sx900.2 and looking to get a single 12" SSD. From the research I found so far I've came to the conclusion that getting a SSD 12" with the copper coil option would be my best bet for the kicker? The amp would run bridged, 850 watts @ 4 ohms so would the kicker be a good match for the ssd? If not any help would be appreciated. Just trying to get some feedback before I make my purchase. This will be my first time buying a Fi sub or even listening to one for that matter. I can't wait! thanks…

My tahoe was rear ended a 2 weeks ago destroying my BL 18s. I had just purchased a RF T2500-1 and im awaiting my second. I have an Avalanche now and i want to run 3 dual 1-ohm BL 15s. My question is will the two 2500s be too much power for the BLs? Also, is there any problem wiring the subs in a "single voice coil per amp" setup, ie: 3 subs, 1 voice coil on one amp, one on the other?? Im kinda new at do-it-yourself car audio when it comes to complex wiring, so any help or advice, good or bad, is welcome.

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

Okay so Fi' s website says 1.75-2.5 Cu ft, but ive heard or read on here that they require a lot of airspace what does need to be at? Looking to order enclosure soon so help would be appreciated!

my buddy has a 18 btl the old style 3 mag. we took it out one day and the tinsel has been slaping on the spider and put holes in them. the box its in is 4.5 cuft and tuned to 32hz with 1800watt on it. i glued some t-shirt on the spiders hoping it will help my main question is does the recone come like the new style with the tinsel under the spiders?

I have two MA XL15s that I want to recone. how do I go about doing that. Must I ship the subs to FI? here is a picture of the sub in case people don't remember them

i'm powering 2 Fi Bl 12's. i would run one amp per sub. these amps run 1550 RMS at 2 Ohms. does Clarion make good amps? would you recommend these? budget is also a key factor. and i can get these amps incredibly cheap. i'd run Rockford if i could. but i cant afford it.

for my next setup i was thinking of doing an 18" btl out of a 2002 pontiac grand prix's trunk on a sundown 3500d. it seems thats what everyone likes to pair up with the btl. this is for a daily system. and the box would probably be like 6 cubes tuned to mid 30s. is this a solid setup? how much wattage do u guys think it will actually see after impedance rise? should i just get a 2000 watt rms amp or roll with the 3500 like i was planning on? and i know this is a difficult question to answer, but does anyone have any experience of any setups like this playing out of a trunk? obviously it all depends on the install and blah blah blah, but i was figuring id make somewhere ar…

Hello there! So a couple months ago I reconed my 12'' fully loaded (older-model) BTL. Before, it lived in one of Pete's Team Toxic Enclosures...but due to the possibility that it may have blown because of the complexity of the enclosure...I want to design a more simple one with the same dimensions of the previous. Problem is, I do not know how to design one. The dimensions would be 20 by 30 by 14. I would like it to be tuned at 32 hz. If someone could please point me towards a thread with the same specs, or design one for me. I would be very greatful. The sooner I could have this figured out, the sooner I can build the box and install the subwoofer. Thank you. P.S. : …

is a single 4"ID x 5.5"L port enough for an SSD 15 in 3.5cu ft. the box will be tuned to 33. trying to finish up the details on my enclosure and i keep questioning this.

Hi, need some blueprints for my 15 inch fi btl fully loaded. it is feeded with aprox. 3 kw. the enclosure is used for spl competitions only, perhabs a flared port is the better choice. The woofer is going in a 1990 volkswagen golf mk2 and the car peaks at 52-55 hz. I'm of course ready to pay for the blueprint. The max width is 37 inch, feel free to the rest, it doesnt matter. Please email or pm me or just post in here Patrick :-)

I have a 07 Tahoe and 2 BL dual 1 ohm 18s on a hifonics BXi 2010. I was looking to add 2 more 18 BLs in a 18cu. ft. ported box tuned to 32Hz. I also wanted to upgrade my amps to 2 RF T2500-BDs strapped at 2ohms. My question is will this be too much power for the subs? They are fully loaded for daily use. Please help. Thanx.

which is better 2 or 4-ohm for a SINGLE BTL on a kicker 2500.1

Well I have a sundown 1200d I will be running 1 10 or 1 12 off of. This is going in a custom fiberglass box going under the seat in a 09 ram. I have alittle more than 7" mounting depth but as of right now only about .83 cuft of volume. I'm looking to extend that to around 1.0 cu feet if possible( and if I don't get the 10"). I have set myself on a fi sub but i'm not sure if is should go 10 or 12. This will be in a sealed box. I'm looking at the ssd and q series. For the 10" i'm actually over the recommended box volume already (.6 cuft). And for the 12 i'm alittle short (.8 cuft). What are your thoughts on what I should do?

Ok here is the email I sent to Fi. Just thought Id post it here while I wait for their reply cause they r so busy. I bought an 18" BTL a while ago and need some recommendations on the type of enclosure I should use. First I went to my local shop to see what kind of designs they could offer me and what they thought would work best for my application. I talked to the guy that specializes in enclosures and unfortunately he hasn't heard of Fi before. So I gave him the web addy to get the parameters of the sub so he could plug the numbers into the enclosure software they have. But, the bad thing was, it couldn't calculate the specs for whatever reason. At that point we started…

Hello all been reading this forum for a while no w not new car audio but new to ported boxes trying to put one 18" fi btl fl into a scion tc with out taking up back seat. The measurments I have are 40"w 16"h 21"d I would like to tune to 31-32 hurtz. Iwas wondering if this would be enough airspace and if someone could help me with the deminsions I would greatly appreciate it. Oh and also going to power this with an saz3000 sundown if thats any help. And Thanx in advance

Just drew this up on sketch up, 5 cubic feet tuned to 32 Hz with port dimensions 5 Wide x 16 High x 34 Long... Wondering what you guys think!

Just wondering,im planning my build and want to use 2 RFT4000.1s.Will that be to much or should i go with the RF2000.1?I want one amp per sub.

So, I ordered 2 SSD 12's last week, (currently have 2 Pioneer 307's in a ported box I made a while back) I was just wondering how to make a decent ported box for the new subs. Car is a 97 eclipse, and the dimensions I got were (15h x 36w x 20d inches) I might be able to go .5in more on the height and depth. Would the height of the port be 13.5in? What should the length and width be? I'm using BassBox 6 Pro but when I put in the info for the port it adds to the total volume of the enclosure which for some reason makes me think it is going to come out wrong when I build it. Any help will be appreciated. I'll be powering them with a RF P1200.2 Thanks.

I have my 18 bl and my car now so im ready to construct my box to fit my trunk. Ill be running the sub and amp at 1000rms at 32mhz. The trunk has alot of space but im worried about putting the box into the trunk so if anyone can give me the proper dimensions for 32hz please let me know and does anone know a good calculator tool for this so i can calculate the port size also? THANKS!

i got a 15 btl FL dual 1 ohm i need a good amp or amps no more then 350 dollars i have 1 sae 1200 on it now but my buddy is going to buy it so i can get something bigger any ideas???????

Alright before i buy a 10" Bl with cooling i need to make sure i know the mounting depth... the website says 6.25" but i heard you have to leave an extra .5" for the pole vent... in this case it would be 6.75" mounting depth. is this correct?

all right so i currently have 1 12" bl 2008 model and im thinking up my new set up and im throwing some things aorund. i was thinking one 15" btl or 1 12" BTL but then i remembered that 2 12" BL's should be louder than a single BTL and i was just thinking how much louder would 2 12" BL's be compared to 1 12" bl. It would be 2 12" BL in a custom ported enclosure in the trunk of a little cavalier 2 door. it would be 2.5 cu ft per sub with 39 sq inches of port per sub and a tuning of 32, and on a rockford 2500 (be approximatly 1400-1500 per sub rms) compared to a single 12" bl in a 2.5 cu ft after displacment tuned to 34 hz with 39 sq inches of port. also on a rockford 150…