Bauer T500 Super-Sound

Marketed in 1977
Super 8 mm film
Lens: Will Wetzlar Vario-Travenon f: 1.3 F: 16.5-30 mm
Lamp: 150 W, 15 V, EFR
Lamp settings: High, Low
Reel capacity: 240 m
Projection: forward, reverse
Projection speed: 18, 24 fps
Film loading: automatic threading
Sound: magnetic playback on both sound tracks
Sound mode: mono, duo
Sound control: volume, tone
Amplifier: transistorized
Amplifier output: music power 20 W
Frequency response: 50-10,000 Hz for 18 fps, 50-12,000 Hz for 24 fps
Recording: magnetic recording on both tracks
Sound-on-sound: and sound fading
Recording level control: auto and manual
Mixing: possible
Input terminal: Microphone, Phono
Input jack: Phono, Line: 5-pin DIN plug (European type); Mic: 7-pin DIN
Output terminal: External Speaker, Line-out
Output jacks: Ext Sp: 2-pin DIN plug; Line-out: 5-pin DIN plug (European type)
Built-in speaker: 6 W
Synchronized sound socket: double-system, synchronized sound with a tape recorder
Motor: asynchronous magnetic motor
Power source: 100-120-150-200-220-240 V AC, 50/60 Hz
Weight: 11,500 g
Dimensions: 240 (W) x 330 (H) x 360 (L) mm
Made in Germany by Robert Bosch

For instructions on replacing the frame adjustment knob see the video below: