What is a "transmission line" speaker?

Maybe I'm a dummy, but I don't know what differentiates a transmission line speaker from any other type of cone drive speaker. Please explain.

jphilips11-21-2002 7:26pm

hififarm Details Discussions Posts This discussion Message User 92 posts 11-22-2002 at 07:19pm Copy Comment URL Report Comment Edit Delete A transmission line is a device that radiates equal energy in all ,360 degrees , equally as in a transmission line antenna. ,Steve HiFiFarm
hififarm Details Discussions Posts This discussion Message User 92 posts 11-22-2002 at 07:23pm Copy Comment URL Report Comment Edit Delete The Walsh driver is a perfect example of a true transmission line. The original that is.