For a solid engineering reference:
http://www.colloms.com/pages/works.aspx
Electroacoustics was my favourite subject, btw.
r
I never understood why electrostatics cost so much - $10K for a headphone
and a few X more than that for full panel speakers. Years ago I build one
with some spare parts laying around and I'm sure I could make the sound more
"hi-fi" if I play with it some more. Those spare parts wasn't worth more
than $10 at the time.
I suppose that's the same reason why a local custom wood shop charge over
$20K for a table - custom design with exotic wood.