- 15 watts
- Two way conversation between telephone and loudspeakers
- Hands-free talkback from speakers
- Signal-activated music muting circuit
Overview:
The TBA-15 talkback amplifier automatically senses and switches the direction of conversation between a telephone and remote loudspeakers. Control of speech direction is maintained at the telephone. Screwdriver-adjustable controls are provided to adjust switching sensitivity, switching delay time and loudspeaker and handset volume. The amplifier includes a 600 ohm transformer-coupled telephone line input, 25V/70V constant-voltage outputs and mute terminals to facilitate unidirectional paging. The amplifier is easily installed on a backboard or in standard 19” equipment rack.
Resources:
Datasheet
Users Manual