PDA

View Full Version : Transmission line porting!



Chinbruiser
08-24-2009, 10:41 PM
Whats the pro's and con's of this type of porting?

superbang
08-25-2009, 12:38 AM
pro- makes the sub you design it for sound amazing

con- harder to build and time consuming

Vermithrax
08-25-2009, 12:43 AM
A TL is a very efficient enclosure, gives very good output and sound quality while requiring much less power.

The enclosure ends up being very large, especially if tuning low vs. a traditional ported alignment.

Chinbruiser
08-25-2009, 12:47 AM
I mean if I had the woodworking ability would this be way better than a traditional ported box if space wasnt an issue?

Chinbruiser
08-25-2009, 12:48 AM
http://i588.photobucket.com/albums/ss324/Chinbruiser/badassbox.jpg This is what I'm talking about but for two L7's!

BoxdGM
08-25-2009, 12:53 AM
isnt that a 6th order bandpass?

Chinbruiser
08-25-2009, 12:56 AM
I dont know thats what Im asking? Somebody told me it was a TL

Vermithrax
08-25-2009, 12:59 AM
In a 1:1 ratio TL the port is equal in area along it's entire legnth. As far as would it be better, that's really subjective. I really liked the results I got vs. a ported alignment, but a TL is not the ideal enclosure for every subwoofer.

BoxdGM
08-25-2009, 01:01 AM
http://www.caraudio.com/forum/showthread.php?t=428024

sorry about the shameless plug for my for sale add lol..
but that is a t-line box, if you scroll down theres a pic the guy who built it posted while it was being built

Chinbruiser
08-25-2009, 01:06 AM
Yeah thats exactly what I want to build! Something just like that! A box for 2 12"L7's and one for a 18" nightshade!

Canaan
08-25-2009, 01:08 AM
http://i588.photobucket.com/albums/ss324/Chinbruiser/badassbox.jpg This is what I'm talking about but for two L7's!

That is not a Transmission Line, its a parallel tuned 6th order.

Chinbruiser
08-25-2009, 01:10 AM
okay so whats the difference? They look the same to me?

BoxdGM
08-25-2009, 01:11 AM
okay so whats the difference? They look the same to me?

the 6th order is almost like 2 boxes with different airspaces on each side of the cone basically

Chinbruiser
08-25-2009, 01:12 AM
What the hell is that for?

Vermithrax
08-25-2009, 01:18 AM
Pretty much to peak at a couple of different frequencies, not so much for sound quality.