In article , Ian Bell
wrote:


It has a lot to do with the positions of the HF and LF drivers and your
listening position. These result in errors which can muddy the stereo
sound field. The only real solution is to use dual concentric speakers.

Interesting. I'd suspect most people wouldn't immediately think of the Quad
ESL63's as 'dual concentric'. :-) More like 'multiple quasi-concentric' or
'phased array', though. They image quite well, though.

The ESL57's (which are not 'concentric') do also seem to image very well,
Given the above, it seems reasonable to think that there are alternative
approachs to 'put the tweeter in the middle of the woofer' that can work...
;-

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html