One Thing Audio
Quad
ESL, History, Prototypes
An early electrostatic loudspeaker (provided by John Doe)
Prototype Acoustical Manufacturing Co. Full-Range ESL. This is a full-range prototype dating back from the mid-1950s. It was made by Quad, and had three separate sections fed by a frequency dividing network. It was said of it that "the results are very good indeed and give some idea of what one may expect when development is finalised." ( provided by Russ Sadd)
