Fi Technical

I need some help building a ported box. I wanted it to be Width:44 Hight:20 Depth:17 And tuned too 34 Hz. I have never build a ported box before lol. This is for a fully loaded BL 15.

so what would the difference be if u had 1 fi 18btl fully loaded daily running 4000watts rms or if you had 2 18bl's loaded running 4000watts i would imagine that the 2 bl's would be louder cause more air movement? i dunno i just got done reading the efficency post that was like 8 pages about 500watts to the btl or for that matter what db increases would you be looking at it you ran the btl18 at 2000watts rms vs 4000watts rms what are the sound characteristics between the btl and the bl ? if the recommended box size is 5-10 cubic feet does that mean that the 10 cu ft will hit lower take less power to get louder but can blow easier? and what would the difference be between …

Im looking at this... for one Fi 18" BTL.... internal dimensions of: 17"H x 29.5"W x 31.5"D I subtracted .26 for speaker displacement, 1.428 for port displacement, and just guessed around .2 for bracing displacement (im mostly gonna use .75" threaded rods and some 2x2)... and I came up with a NET Volume of 7.25 cubes and the port is gonna be 17"h x 6"w x 26"d (with a total of 102 sq "/ 14.06 cubic inches each ft3) ...I came up with a 33.22 hz tune with all this..... can ya'll review these specs, and let me know if this all seems correct? I would greatly appreciate it!!! :foshizzle: thanks, john

I have a 2003 Gmc envoy, and dont know what i want to put into it, was thinking either 2 of the 15 or 18'' btls and either 2 of the RF t2000 bd or 2 of the t4000's any ideas what would be loud and still sound good?

I am looking at getting a 10" Q. Would a Crunch GP2250 be a good choice of amp if I got the dual 2 ohm? I would bridge the amp and wire the sub at 4ohm. If I'm not mistaken then that would be 1000w rms, right?

Ugh i just bought a box form a audio store and its a 1.75 cuft and and im sure if i want to use it. Would it be ok to use it tell i find out how to build my own box?

Hey guys, I have Manny from http://www.trexcaraudio.com/ building my box for 2 18" btls..and I was just wondering if this sounds correct, his calculations for the box: 19" high 40" across 37" deep 95 sq ins port is 13" long (tuned @ 32 hz) and is 11.79 cubes thnks, Freddy

i read the guide on here for the ssd's, and its a pretty wide range of sizes. I have plenty of room, and was thinking tuning to 32hz and about 16-17 cubes gross. Will be subs up and port back in expedition running off 1 saz1500d. Any suggestions, or does that sound like good place to start? thanks

ok i really only listen to rap like young jeezy i like the deeper bass i have a 04 expedition and i want to get a 18btl fully loaded daily i have a us amps vlx 400 to power the 18 Output POwer at 12.6V: 2 x 200W @ 4 ohms (THD < 0.006%) 2 x 400W @ 2 ohms 2 x 800W @ 1 ohm 2 x 1200W @

Hey everybody i have a quick question, im thinking about buying a 15" Bl but i heard that if I just listen to rap and hip hop that the 15"Q would be the best is this true and also its gonna be running of a RF P1000 1bd do i need the bp power if i get the Q

in my first thread i stated that i had a mtx tc4001 that i wanted to use. but it woouldnt handle the 1 ohm load that the dual2 would have or it would have a 4ohm load if i ran it in series. if i get a D1 and run it in series wont that show a 2ohm load to the amp?

12" Fi Q with a rockford fosgate punch p1000-1bd Dual 2ohm coil sub wired to 1ohm in parallel 2.5cuft ported box in a 02 Impala tuned to 32hz ------------------- Is this a good setup and how will it sound. I listen to rap & want good sq but also want to blow people away. I also have a couple questions about the setup & about the sub -will it work & are there any changes or other amps that that can make it better for cheaper? -is the rf a good amp? -what component speakers/tweeters should I use? -should i upgrade any electrical (i will go to a yellow top battery already)? -will my alternator hold up to it (i know nothing about my alternator)? -do i need a cap?…

Got my car back from the dealer service dept. and my 10" rockford T2 was fried. Rockford doesn't offer a recone and the parts distributor that they referred me to says they have a really long back order on parts. I was wondering if it's possible to do anything with it? It was a pretty decent driver, and i would hate to just throw it away if there is an alternative. thanks!

ok here is my question can i run 2 amps (mtx tc4001) on a Fi q 12? the amps are rms 600x1 at 2 ohms. i know that the FI's are dual 2 ohm. right now i dont have the cash to buy the amp i want(sundown). the other mtx amp should be here soon but until then can i only run one VC? is that safe? any answers would be nice? my friend has one of the FI Q 12 in his 06 Z71 and man it sounds great... i want that sound

hello guys, im not writing much on this forum but i will introduce a lil bit, im dbwesz from holland. and do music competitions in holland. im runnning now 4 Rockford t30001bd's on 2 re audio mt 18's in a 400 liter enclosure (dont know how much that is in cu ft SORRY) tuned on 28hz port frequentie. im doing on a TL 157,4 db peaks on 42 hz ( car freq ) on music song ( lil john what u gonna do ). i have a couple off vids standing online on youtube ( also vids of olderbuild i had like 3 SX 18's etc) and coulple of car alarm and house tricks. TO THE POINT!!!! i want to make something new now. in europe we are not realy like in amerika. our boxes are most of the time tuned hig…

Ok I'm picking between the lanzer opti 2000 or 1400. Based on the specs at a 1ohm load with the 2000 I would be getting around 1600 watts "give or take" running to the sub right? With the 1400 the max is about 1300 but I would expect like 1000 or a little around 1000 like 900 something at 1ohm. Which one would u guys pick between the 2? Just for reminder I have the Fi Q 15 with bp option Man reason I'm asking is I don't wanna over power my sub.

I already have 1 BL 12 with a sundown 1500d on it now, i was going to sale it and just get some 18s or whatever. Now if I go ahead and just get another BL 12 with same options I have now which are D2, cooling, and flatwind, and run them to a pair of strapped 1500d's they should be fine with that power? I figured they would be ok, since already have 1500 watts on 1. thanks.

Hey everybody, as you can see im a newbie lol but my question is im plan on getting a 15" Fi Bl w/ p chamber option and its going to be running off a Rockford Fosgate P1000 1bd (1000+rms) and i was wondering if I needed a new car battery or should i just hook up a cap to the amp

the actual diameter of the BL 18? need to see how im going to have to design my box

not trying to be a pain but are the specs going to be posted anytime soon.i know the specs say they are a sealed sub but everyone knows how well they perform ported now they have been out for a while.

What size ports are you guys using for your Q's? I'm building a custom fiberglass enclosure for my standard cab and i need some info on what people saw was the best result. I will be using round ports. To sum it up, what size diameter,length port do i need to not have port noise and have excellent sound. I was going to build it exactly to 2.5 cuft with displacement and port. Should i make the enclosure smaller? what are peoples views on this-Thanks

I am looking at building a new box and I can't seem to make up my mind on 2.5 or 3 cubes. I also keep going back and forth on what tuning to go with 32? 34 any experienced btl owners out there have any advice??

Hey everyone...I need some help.... I have a 94 Camry wagon and I want to put a Box for 2 18" Btls....I included links to the pics of my car and the dimensions inside are: 37" wide 28" high 37" length (with rear seats up) -or- 69" length (with rear seats down) ... also I know nothin about building boxes so, where would I go to have the box(s) built???....ported Im sure, and what amp(s) should I get to power these daily monsters??? your help is greatly appreciated thnks Freddy http://s453.photobucket.com/albums/qq252/D...nt=PIC-0044.jpg http://s453.photobucket.com/albums/qq252/D...=PIC-0045-1.jpg http://s453.photobucket.com/albums/qq252/D...nt=PIC-0…

Ok guys I need a little input on a few things. First off, I was running two FI Q 15's off of a 40.1 @ 1 ohm in a 8cuft box ported to 28hz and blew one to hell and the other one's coil is burnt like a motha... So I was thinking of going with either one 18 BTL or two 15 BTL's off of the 40.1 @ 1 ohm. What do you think? Either setup will be tuned to 32hz. I was planning on modifying the current box if I go the 15 route, but if I go with the 18, the box will be around 7.5~8 cuft tuned to 32hz. This will be a daily driver setup.

Hey guys i have a couple of questions, i got a saz1500d, and i am going to be ordering a 15q, should i run the sub at 2 ohms (800watts rms) or 1 ohm (1500rms)? Right now i only have 4 ga running to the back, will that be okay if i run it at 1ohms or should i stick with 2 ohms, I am going to run the most likely sealed in a 2.5 cu ft box. i have a 09 toyota corolla, not that much trunk space, or will it sound better in a 3 cu ft box ported? If you guys have any other helpful tips please let me know. Thanks