Sonifex CM-TB8G Talkback Control Unit CM-TB8 with CM-TBG Dual GSM Interface

FEATURES

• 8 Channel talkback control unit in a 1U rackmount package.
• Separate microphone and headset inputs with phantom power and individual gain settings.
• Microphone talk levels can be instantly adjusted or preset.
• Talk level LEDs and built-in limiter.
• Configurable Group Talk function.
• Interruptible Foldback and direct 4-Wire operation selectable on each channel with optional talkback-microphone mix function.
• 2 external IFB (Interruptible Foldback) inputs are available to each channel.
• Optional telephone hybrid or GSM ports allow direct connection to a telephone line for remote communications.
• Individual monitor level control for each channel.
• Microphone output feed which is gain adjusted & level limited.
• Ethernet connection for remote configuration with the built-in web server.
• 6 stored configuration templates with 4 user-editable sets.
• Front panel loudspeaker with separate feed for an external loudspeaker.
• Loudspeaker mute and dim controls, also available on remote input.
• Remote tally outputs indicating when each channel is active.
• Remote inputs providing a call indication on each channel.
• Built-in tone generator for channel identification.

The CM-TB8 8 Channel Talkback Control Unit is ideal in an OB truck or small studio. The CM-TB8 is a talkback control unit providing 8 channels of 4-wire communication, housed in a 1U rack mount enclosure.

The unit has individual connections for both a headset on 5 pin XLR and microphone/headphones on XLR/stereo TRS jack, with the current selection indicated on the front panel. The gain setting for each input type can be individually set between +6dB and +68dB allowing for a wide range of microphone types and +48V phantom power is also available. Small talk level adjustments can be made quickly, using the front panel rotary control with a maximum adjustment range of 12dB. This adjustment can be disabled if required to stop inadvertent changes. A level limiter automatically adjusts the microphone gain if the signal level exceeds a preset level, and the current talk level is indicated on the front panel when it exceeds 0dB and +8dB. A separate output on the rear panel provides a balanced, gain adjusted and level limited microphone signal on 3 pin XLR.