This is a follow on from the B7W DM70 query that Rich posted where he seemed to take a probably unhealthy interest in electrostatic HF
I replied thus :
I think you should Google ' diy electrostatic loudspeakers ' plenty of info there.
BE CAREFUL ___ HIGH VOLTAGES !!! YOU HAVE BEEN WARNED !!!!!!!!!!
having said that in essence they are really simple in concept , it is just the implementation that is tricky.
Here is a potentially simpler and safer plan , there are some really powerful permanent magnets available now ( NEO ) www.emagnets.co.uk. Look at Apoggee Magneplanar etc and see how they are done , spend 20 quid on some flat bar mags and some mylar metalised film or window alarm tape etc and make yourself a tweet. I'll fetch you from the funny farm in a year or two but at least you will not have frizzy hair and eyes like this
Well this should whet the appetite somewhat. It is a pic of a speaker that was produced in Nederlands by philips , however they used JBL bass drivers but here is the interesting bit , the HF is a horn loaded ribbon. New magnet technology makes this an entirely feasible method for HF.
Now I know a fair bit about these but Rich you gotta get busy and start digging around the web and then once you have learned a thing or two you should be able to build your own ribbon drivers for less than a night in the pub.
Mac