|The Model Q4 Sound head is capable of printing:
4. Optical Track
The lamp intensity is controlled by the 4 track lamp controller
(pictured above) by sensing the light output from each individual lamp.
This allows the soundtrack lamps to ramp up and down for variable speed
The controller also allows for the individual adjustment of each of the
4 track lamps.
Each of the 4 lamps have filter holders. High efficiency glass filters
are available for the Cyan and Magenta tracks (lamp and power supply not