Fi Technical

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…

Is a boxed tuned to 34 good for the BL?

I have an 18" btl in the mail it should be here tomorrow, I totaled my truck a few days ago that it was going to go in so now I have to put it in a 98 mitsubishi eclipse for a month or so i'm looking at making a box L34xH24xD17 wich I think is about 6.9ft cubed so I would need about 75 square inches of port. how do I tune it to 32hz?

I'm needing some advice on a box design for a 18" btl (old style) going in the back of a 1996 gmc suburban. Its a daily driver (no competitions) and Im looking for decent sound quality while hitting low and hard. I listen to mostly rap music and a little r & b. Not sure which way I should face the sub or the port or any of the box details to best suit my needs. Space should not be a issue since its going in suburban. Here are some other details about the install. Amp: Memphis 16-2000d (old school mojo) Components: 2 sets of CDT CL-61A w/ a kicker zx200.2 amp Electrical: 200 HO alternator and 2 yellow tops. 1/0 monster cable everywhere Head Unit: Jensen vm9411x (Yes …

At the moment I am really thinking of running 2 12" BTLs. I know this may be a dumb question, but hey, I am new and gotta learn somehow....anyway, how do the 12" BTLs sound. I have heard some subs where the 12" would sound horrible (imo) but the 15 sounded great....both in the optimum setup and tuning. Just like some subs aren't really recommended for certain types of enclosures or applications....is it ok to use 2 12" BTLs for a daily driver or would it be more beneficial to use the BLs due to application types.

I'm Looking At Building A Ported 8 Cubic Foot Box For The SSD 18. Someone Couldn't Help Me With The Dimensions And Port Size, Could They? I'd Seriously Like...Appreciate It. Also Specs For A Square Port Or A Slot Port, And How You Make A Square One. I Suppose Its Just A Hole In The Box Panel? The Sub Is Firing Up, Port Firing Back.

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.

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?

Hey Guys, Could anyone help me with a box design, I built some sealed ones, but I just am not sure how to calculate the ports and tuning with ported ones. Even with the Box calculator's. I am looking for a box to hold 2 15 BL's and a box for 1 15 BL. Tuned from 28-32 Hz, Not sure on what would sound better. 30"depth 42"width 20" heigth these are the specs I wanna work with, I can fit more but, this is really what I wanna stay around Anyway, Thankx to anyone that can help me with this. Josh

haven't been on here in a long time. i'm trying to run two of these, but i lonly have 2 cubes after displacement for each. i already built the box and i'm waiting on recones. it's tuned to about 37. just wondering if anyone tried btl 12's in the same size box and what you thought of it? oh btw amps are 2 t20001bd's. one to each woofer, dual 2 ohm woofers.

is there anyway i can do three ported btl'15.. H=17" W=47 D=31

Hi, I'm about to order an 18" btl I just got done going through the options i'm bit confused as to what ohm to get I want to run it at 1ohm the amp ill be using is a HCCA-D5000 monoblock my qustion is should I get a duel 2ohm and run it in parallel or what? how would I wire the sub if it was duel 1ohm, split the pos and neg in the box and hook up all the turmanals?

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!

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

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 …

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?

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

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

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, 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

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?…

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?

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