Electrostatic Loudspeaker Theory

Fikier

A well known work from Fikier which is more focussed on building electrostatic loudspeakers. This dutch classic can be downloaded here. Dutch only.

J.H. Streng

Yet another work by a Dutchman, but this time in English. Theoretical study on charge movements on the diaphragm, radiation patterns and air loading of strip radiators. Download it here

Baxandall

The best work on electrostatic speakers, period. Download it here

Quad ESL measurements

ESL Simulator

• Electrostatic Loudspeaker Simulator

Published frequency response measurements

• Quad measurement Stereoplay June 1978
• Hifi Stereophonie
  
• Unkown source 5db/div
  
• Lynn Olson's measurements of the Quad ESL
  

Some of my own measurements on non refurbished panels

• Treble panel 6690 vs 6691
• Treble panel output of mid/high strips
• Effect of metal front grill
• Effect of the felt backing on the treble panel