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-   -   transmission line (http://www.diyaudio.com/forums/car-audio/40841-transmission-line.html)

boister77 12th September 2004 11:51 PM

transmission line
 
hello. i'm looking to build a transmission line enclosure for a 12" brahma. i've tried reading up on material on the web but still don't quite understand the theory/design of it. if someone could help me out it would be great. thanks!

mike.e 14th September 2004 03:30 AM

Simply-you wont fit a good 20hz Tline in your car.

Tlines arent magic,the end response is similar to,but not the same as a ported box.

Modeling tlines is almost as hard as modeling horns
Takes ages,and u have to download mathcad8+ the files

www.quarter-wave.com

BillFitzmaurice 20th September 2004 02:06 PM

mike.e is correct. TLines are big and in the confines of a car where low frequency room gain abounds they don't serve any purpose. He's incorrect about one thing: true Tlines mimic the response of a sealed box, not a vented one. So-called ML-TLs are a different animal entirely, combining elements of vented boxes and TLines, and they don't totally adhere to the characteristics of either one. Of course, if you really want it low and loud a horn is the only way to go.

www.billfitzmaurice.com


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