"The Old Fogey" wrote in message
om...
Anyone come across an exponentially tapered
transmission line, apart from the B&W Nautilus?
It looks like it would be an amusing project.
An infinite length exponential taper has a finite
internal volume so all I need is to find a wall material
with zero thickness :-)

Roger.

try here http://www.t-linespeakers.org/projects/index.html