Mixer
Start > Settings > Control Panel > Mixer
The MX9 has a speaker and a microphone. They are active when a headset is not connected to the device.
The microphone is located to the left of the oval logo at the top of the unit. The speaker (audio) is located above the keypad.
Use the settings on these panels to adjust the volume, record gain and sidetone for microphone input, speaker and speaker
output.
Headsets can be enabled, disabled and selected using these panels.
Factory Default Settings
Output
Speaker Volume 0 dB
Headset Volume -13.5dB
Headset Selection Default
Input
Input Selection None
Record Gain 0 dB
Record Boost +12 dB
Sidetone 0 dB
4-150
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