13-01-2016, 09:01 PM
There is a chance it could be a film sound amplifier.
They had photo cell sound sensors and lamps that were driven by a regulated oscillator.
The oscillator would be mounted close to the lamp off the chassis and the cell bias would be on the amp chassis.
They had photo cell sound sensors and lamps that were driven by a regulated oscillator.
The oscillator would be mounted close to the lamp off the chassis and the cell bias would be on the amp chassis.
