On Fri, 05 Nov 2004 22:55:42 GMT, "Fleetie"
wrote:

"Dave Plowman (News)" wrote:
Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.

They can have.

Just cos Quad ESL57s don't and the ESL63 has like rings and delay
lines and whatnot.

Certainly Stax' "EarSpeakers" (AFAIK) all have just one transducer
for all frequencies.

As do Sound Labs and the Martin-Logan CLS. And the Quad's annuli are
specifically designed to simulate a point source 300mm behind the
speaker, so they certainly do count as a single driver acoustically.
--

Stewart Pinkerton | Music is Art - Audio is Engineering