General Fi

just like it said up top, what size do i need to cut the holes for the 18" bls thanks

Ok, I have posted several things in the past asking question to help me with my own vehicle setup, now for something a little off the wall. I am getting ready to have to write a thesis and would love to write it on the mathematics behind subwoofers, car audio, etc. As you can tell from my previous posts I don't have to much of an idea of the all-around idea of mathematics. I was wondering if ya'll could point me in the right direction for anything regarding any type of mathematics behind car audio, etc. Again I know this is a odd request, but I researched every major mathematics college and no paper has ever really been written about this from a college student and wo…

i did not take many pics but here is what i have. ill take pics of the install in the truck soon.

I have a 3500d series DD motor, that needs a recone, the basket originally was a 4 spoke 15, but was damaged and tossed, i still have the black plastic spacer but only one of the screws to connect the basket. so possibilities of turning it in to an 18? and cost? 3 inch coil, int. leads, extra spider, new basket and screws.

diagrams on how to build?

Purchased an fi btl sub off craigslist. long story short, the previous guy who owned it did a VERY bad recone job and the tinsel leads that go into the spider were shot and the wire that goes into the cone is too short and when the sub excursions, it simply rips out of the tinsel. I'm going to order a new recone kit but i cant figure out if theres a difference with the btl/n2/n3 and which model this is.. I deleted the guys number because I was so pissed at him that he would sell me something fked up. if anyone can help me figure out what it is or if theres anyway to tell please let me know asap!

I am looking at setting up a sub in my car. I have had systems in the past, but I'm used to just running subs from Crutchfield or Best Buy - just choose your size, amount of coils, and throw it in the car. I am looking for a single sub that can handle a lot of power, but still be very clean. I'm not looking to go to any shows or SPL competitions, I just want to enjoy it in my daily driver. My problem is I'm ignorant on reading the specs for the subs on Fi's product page - I don't know what they mean by Fs, Re, Qms, Qes, etc. I have an Elemental Designs Nine.1 amp that I am going to use. It is rated 1200W x 1 @ 1 Ohm and 900W x 1 @ 2 Ohm. What sub would best fit my needs -…

so i only ask this because i saw this and i have all ways been told to run both coils at all times. but they are saying using one of the two coils just means you can just run half the power to the sub and its no harm no foul. they also said that you can use the second coil with a potentiomoter for a variable QTS system. i would like your thoughts on this, and i thank you for taking time out of your day to answer me.

Is a Fi 15 SSD louder then 2 alpine type R 12's?

It's 3 cuft tuned @ 33 hz and it's going in a 2001 Dodge Durango. I'm getting the plexi etched at my laser shop and it should slam. This is my first install w/ Fi products and let's hope it's not my last.

I have been competing in MECA for the last couple years, and due to the rule changes Im dropping out. So now Im headed back into a daily set up, no longer chasing numbers. I have both the ufo mag and n2 btl's and love both, I finally got a blazer and am looking for a just a monster daily system. Both my btl's are 12s, since I now have a blazer I will be looking at an 18. Question being....what would fit my bill better, going with a sp4 or just reconing one of my current btl's to an 18. Will be on a saz3500 with the proper electrical.

just spent $210 for a 12" BTL recone but i have a question.do i still have to pay to ship it to vegas? or am i supposed to recieve a label through email? i was probably better off just buying a new sub if im gonna be paying over $300..any answers?

At 1:03 ish. Is Steve just not pulling enough power?

Initial impression is WOW! Haven't built my custom box yet but had an extra one that's 1.4cu ft so just plopped it in. Didn't change any settings on my amp but man, it sounds like there's 2 12s in there. NICE! Just did a search, looked up a few suggestions on what to set my amp at and will bump it when I go to school later. Thanks all for the help and will post pics later this weekend (papers and finals coming up). -Sunny

Hello, im making a box for my 15" Fi BL its gonna be 36 x 18 x 18 4.7 ft3 @ 30.5hrz daily driver just looking for some ground shaking fun : ) will this be a good box for that woofer?

hey i was wondering how much will it cost to recone a re mt 15

What is the biggest difference between the 12 inch SSD and the 12 inch Q other than the 200 watts of more power?

I have a Blueprint 1503 from several years back. Someone told me that Fi's owners used to build these, and may be able to do a recone. Any info on this? Thanks.

i just got a FI Q12 and was wondering which is better and why... a ported box or a sealed one? i have heard good things about both of them but was wanting some more opinions... thanks

Yesterday i received the amp wiring kit and the 10ft of power cable for the "Big 3". Today i received the 25 ft of speaker wire and the headunit. The sub and amp should be coming in shortly and then ill be installing it... so now i gotta decide quickly on my box ideas. I have decided to get a sealed box... i guess about 2.6 cu.ft. there is only one thing left to decide --- which way the sub faces and where to put the amp... in terms of sub direction/placement, i was thinking of doing something like like having the box in the trunk and when i open that armrest thing the sub will be facing towards the cabin....i was thinkn like when u opened the trunk itd be like sealed …

just wanted to share my joy , ordered 2 15 dual 1 Q's , already shipped and on the way to israel thank you Scott and Shawn for the fast and great responses one of the best service i have met online everything done within a couple of hours awesome replies and help from Scott, fast and kind gonna run the Q's each in a 2.5 cf sealed boxes , cant sleep at nights waiting for them to arrive hope to post up some pics soon word up guys! gonna rep Fi in israel as good as i can! Eli.

Hi, I recently ordered a recone kit with a 15" basket for a btl n2. I saw, on bongo International (the shipper to my country) that there is only one package. I wonder if the basket is in the package. I could not see it on the pics provided. My sub is a 12" and I want to recone to a 15". I've ordered the good size for the recone. I hope it will come complete.

Which is better? what are the good and bad points of each? can one handle more power? does one sound better? whats the deal? lol

I am in pretty desperate need of help...I tried to design a box and I keep getting lost. I am working with about 18" in height, 48" in width, and roughly 20-25" of depth. I would like to do 2 15" BLs tuned to around 34 Hz or so. Can someone please help me out. Thanks.

Coding is done... Fire away!