Wheelock TBH-104 Talk-Back Horn System with Optional S-H8 Horn
 The TBH-104 Talk-Back Horn is a two-component, two-way, hands-free communication talk-back system, providing unmatched talk-back intelligibility. The TBH-104 consists of an 8-ohm horn and a control unit. Optionally, a second S-H8 horn can be added to the TBH-104 system when two horns are needed. The control unit contains an omni-directional microphone with built-in pre-amplifier and sensitivity control for superior talk-back distance direction, and intelligibility. Fast, noiseless voice switching eliminates “clicks”, “pops”, and “word clipping” which causes unnecessary delays in two-way conversations. Calling party has priority to prevent false switching of speech direction. Internally adjustable page volume control and a built-in 4-watt amplifier for voice paging, back-ground music, and tone alerting are all integral parts of the control unit. It also has a privacy LED, which illuminates when the system is in the “listen” mode.
The horn has a fully adjustable base, and both the horn and control unit are designed for indoor and outdoor locations which are large and/or noisy.
Specifications:
- Operating Voltage: 24 VDC
- Nominal Current (See note 2): 300 mA (@ 2 W)
- Amplifier Input Impedance 600 Ohms
- Amplifier Audio Input: -15 dBM to + 15 dBM
- Amplifier Rated Output: One 8-Ohm horn - 4 Watts (RMS),
- Two 8-Ohm horns - 3 Watts (RMS) (1.5 W per horn)
- Amplifier dBA @ 1 Meter: One 8-Ohm horn - 115,
- Two 8-Ohm horns - 110 (per horn)
- Frequency Response: 400 Hz to 10 KHz
Notes:
- Sound output (dBA at 1 meter) measured at rated power output at 1000 Hz.
- Maximum current is 400 mA @ 4 W
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