Talkback system

Talkback system (equivalent TB-6R 6 Way Talkback)
Features
Provide talkback for up to 7 locations
Brightly lit push-to-talk buttons.
Momentary or latched buttons.
Built-in electret microphone, with input for external microphone.
Monitoring of 2 external inputs, e.g. for off-air receiver.
Auto-muting, or mixing, of external inputs, when talkback is active.
Integrates with Sonifex S2 mixer and is compatible with other talkback systems.
Audio & Power Specification
Talkback Input/Outputs - 15 way male D-type plug for 6 balanced talkback outputs and 1 balanced talkback input
Talkback Input Gain Range - 9dB to -28dB adjusted by rear panel preset pot
External Inputs & Mute - 9 way female D-type socket, for stereo balanced external input 1, stereo unbalanced external input 2 (or external talkback input/output), talkback control output and mute input
External Input 2 - Dual phono socket, stereo unbalanced in parallel with the 9 way female, D-type socket
External Inputs Impedance - > 30kΩ unbalanced, > 40kΩ balanced
External Talkback Input Impedance - > 30kΩ unbalanced
External Talkback Output Impedance - < 80Ω unbalanced
External Microphone Input - 3 pin female XLR socket
Mic Input Impedance - 1.5kΩ balanced
Microphone Input Gain Range - 74dB to 53dB adjusted by rear panel preset pot
Headphone Output - 6.35mm (1/4”) jack, unbalanced stereo capable of driving 150mW into 32-600Ω headphones
Headphone Output Gain Range -9dB to <-60dB (off) adjusted by front panel pot
Loudspeaker Power -1W
Mains Input Power - 85V - 264V AC, 47-63Hz, max 10W
Fuse Holder - 1A anti-surge fuse