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View Full Version : folded tl design for re mx 12" w/pic



sinosic
05-08-2007, 05:28 PM
i dont have or even know how to run mathcad. can one of you please run my design for a re mx 12" sub w/ a fs:23.165 and the line is 106" long. this all will be in a x-cab truck. one more question where should the sub be mounted inverted at? good looking out.

http://img403.imageshack.us/img403/8440/remx12tl2qk4.jpg (http://imageshack.us)

sinosic
05-08-2007, 05:34 PM
cmon anyone im going to get the mdf right now.

Blove1991
05-08-2007, 05:47 PM
I would probally invert it right beside the port opening

Fast1one
05-08-2007, 05:58 PM
I don't have access to MJK's software right now as nothing is installed on this computer lol...I will tell you that it would probably be best to mount the sub a third of the way down the line or a bit more...somewhere on the opposite side of the port. This will tame the upper peak a bit...

Death By Bass
05-08-2007, 06:00 PM
the sub should be mounted at the start of the TL... right next to the port... :s

edit: and its about a 37Hz 1/4 wave transmission line...

sinosic
05-08-2007, 07:03 PM
if anyone has mathcad please run this for me. is 1000 watts rms to much? if so how much should i run to the re mx 12". i think the rms of that sub is 1500 watts. if the box is tuned to 37hz like stated above, will that sound good for rap music?

Immacomputer
05-08-2007, 08:36 PM
Um, that line length is 90.25", not 106.

You would need to stuff the line decently thick to get the adjusted length to be correct.

I know you think this will be the perfect enclosure type but I really don't think it is what you're looking for. I know you're wanting something loud and you think because this is different, it's going to be better than a ported enclosure. I really doubt it will be. If you want to know how it models, it looks just like infinite baffle as far as SPL vs frequency goes. This will NOT represent how it will sound.

I say throw it in 2 cubes tuned to 35hz and be happy.

Blove1991
05-08-2007, 09:01 PM
Um, that line length is 90.25", not 106.

You would need to stuff the line decently thick to get the adjusted length to be correct.

I know you think this will be the perfect enclosure type but I really don't think it is what you're looking for. I know you're wanting something loud and you think because this is different, it's going to be better than a ported enclosure. I really doubt it will be. If you want to know how it models, it looks just like infinite baffle as far as SPL vs frequency goes. This will NOT represent how it will sound.

I say throw it in 2 cubes tuned to 35hz and be happy.

x2 instead of trying to go through all this trouble

sinosic
05-09-2007, 01:21 AM
Um, that line length is 90.25", not 106.

You would need to stuff the line decently thick to get the adjusted length to be correct.

I know you think this will be the perfect enclosure type but I really don't think it is what you're looking for. I know you're wanting something loud and you think because this is different, it's going to be better than a ported enclosure. I really doubt it will be. If you want to know how it models, it looks just like infinite baffle as far as SPL vs frequency goes. This will NOT represent how it will sound.

I say throw it in 2 cubes tuned to 35hz and be happy.

how did you measure the port length? i double checked and got 108.25"
and i added 45s to the corners which measure 6" from the end of the middle port board to the 45s. consitant 6" through out the whole length of the line. i just wanted to see what a tl was capable of. i just finished it and my friend left with it and he is mounting the sub as i speak. i will let you people know how it sounds.

http://img115.imageshack.us/img115/1404/tlinetutorvx3.jpg (http://imageshack.us)

sinosic
05-09-2007, 01:30 AM
the first graph was my old design . the person recommended 100" line length instead of 144". so i redid me design and came up with this one which is close to 100". looks good to me

http://img516.imageshack.us/img516/2512/image2lj6.jpg (http://imageshack.us)

60ndown
05-09-2007, 01:38 AM
looks flat, and with cabin gain, even flatter.

Immacomputer
05-09-2007, 07:53 AM
http://i18.tinypic.com/4kocioh.jpg

That's how you measure line length. Add up the total length of the red line.

sinosic
05-09-2007, 11:51 AM
http://i18.tinypic.com/4kocioh.jpg

That's how you measure line length. Add up the total length of the red line.

i dot it the other way. heres a link that i have learnrd alot on "basic" tl enclosures.

http://www.stevemeadedesigns.com/forums/index.php?topic=1828.0

Death By Bass
05-09-2007, 05:47 PM
i dot it the other way. heres a link that i have learnrd alot on "basic" tl enclosures.

http://www.stevemeadedesigns.com/forums/index.php?topic=1828.0

thats wrong... posted on Steve Meades forum, what would you expect? :p lol

Immacomputer
05-09-2007, 11:34 PM
i dot it the other way. heres a link that i have learnrd alot on "basic" tl enclosures.

http://www.stevemeadedesigns.com/forums/index.php?topic=1828.0

Yep, that way is wrong.

If you really want to learn more about quarter wave theory, www.quarter-wave.com and www.t-linespeakers.org are a much better sources for information.

sinosic
05-10-2007, 01:36 AM
Yep, that way is wrong.

If you really want to learn more about quarter wave theory, www.quarter-wave.com and www.t-linespeakers.org are a much better sources for information.

for sure. i read those when i first started being interested in tls. they were way to confusing. then i stumbled on this other site which seemed alot less confusing. but now that im started to get it alittle more maybe i will go back to the "real tl sites" good looking out