This is a typical audio rack for a GCC theater during this era. At the top, a Dolby CP-50 audio processor. In the middle, a Kelmar dual 9VDC exciter lamp power supply. At the bottom, four Kelmar power amplifiers. The CP-50 was the first 35mm film Dolby Stereo processor from Dolby Labs. Many were installed worldwide in the late 1970’s and early 80’s.
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This is a typical audio rack for a GCC theater during this era. At the top, a Dolby CP-50 audio processor. In the middle, a Kelmar dual 9VDC exciter lamp power supply. At the bottom, four Kelmar power amplifiers. The CP-50 was the first 35mm film Dolby Stereo processor from Dolby Labs. Many were installed worldwide in the late 1970’s and early 80’s.