The latest version of my wide range ESL is described in l' Audiophile but I developped a little cell 40 mm x 400 mm for horn mounting and a 40 mm x 2000 mm large dispersion tweeter for the french company ONDO. Most of my works are registrated designs and they are listened to by hundreds of people.
Since the early 70's I built several electrostatic headphones and electrostatic loudspeakers. I wrote articles for the French magazine l'Audiophile where I described my works :
- Feb/march 1989 - pages 108 to 119 : An electrostatic headphone (100% personal design)
- May 1990 - pages 108 to 121 : A tube amplifier for electrostatic headphone (based on a schematic from Stax)
- July/August 1993 - pages 58 to 66 : An electrostatic loudspeaker (100% personal design with trapezoÃƒÂ¯dal shape, registated design in 1982)
The latest version, now in process, of my headphones use metal rods electrodes, composite moulded frames and an tube amplifier with four EL34 in a direct drive design. It's the best electrostatic headphone/amplifier I have ever built. I have Stax and Koss ES headphones to make listening comparisons.
Please visit the Electrostatic Headphone Circuit / DIY / Philippe Hiraga to find out more about my electrostatic headphones.
Close up of the stator
One of three Diaphargm stretching jigg