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4. Set audio parameters
In this section you can make adjustments to the CM3000 audio behavior to customize it for a specific ezRoom installation. The
default values of most parameters will provide optimal performance for most installations, and noted below are where adjust-
ment should be made.
Volume Presets
• Startup refers to the volume level when the device is powered up. 0 is lowest and 32 is highest.
• The Presets can be used to send a control code that sets the CM3000 to a preset volume level. For most installations this
is not used as one can send an exact volume command to a CM3000 directly.
Channels 1, 2, 3 and 4
• When checked Enable allows the audio signal on that channel to be used as an input to the device.
• Startup designates which channel will be active at device power up. Typically this would be Channel 1.
• Gain adjusts the input level of a channel so that when necessary it can be balanced with higher or lower inputs to level
match with other channels.
• The CM3000 supports ducking, which is the automatic decrease of audio volume on other channels when there is audio
on the priority channel. Mic designates the priority channel, and by convention Channel 4 is selected.
• Relatedly, Setback specifies how low the volume of the non-priority channels is set when audio is present on the priority
channel. 0 designates no volume decrease and -32 would mute the channel.
• Also, Threshold specifies the audio level necessary on the priority channel for ducking to be invoked. The default set-
ting of 32 is appropriate for the average classroom. In a room with substantial ambient noise however, that noise may be
picked up by the teacher’s microphone and invoke undesired ducking. This can be overcome with a higher Threshold
setting, though the drawback is the teacher would need to speak louder. An alternative is to set Setback to 0, which
essentially turns off the ducking feature.
Channel 5
• This channel refers to the IP streaming audio coming in to the LAN 1 or 2 port.
• As with Channels 1, 2, 3 and 4, Startup designates which channel will be active at device power up. Typically this would
be Channel 1.
• PA Detect needs to be set to Both if the CM3000 is in an ezRoom installation that is integrated with a Conductor system.
Even if not however, there is no reason to use another setting.
• Relatedly, when the CM3000 is part of an ezRoom installation that is integrated with a Conductor system, Threshold
specifies the sensitivity of IP audio level detection that will invoke ducking. This is typically not changed from its default
value because the Both setting under PA Detect will allow for the trigger upon presence of an IP audio stream.
Other Settings
• Amp Gain sets the output gain for the device, and is typically set to the level of 32db.
• When the CM3000 is part of an ezRoom installation that is integrated with a Conductor system, PA Volume specifies the
volume level of pages and bells.
• Relatedly, PA Restore specifies the length of time after the paging or bells audio ceases that the other audio inputs are
taken out of mute and returned to their previous volume levels and state.
• Mic Restore is similar to PA Restore, but applies to the microphone audio.
• With Mute mode one can choose to mute only the amp speakers or also the line out audio when the MUTE command is
received from Encore! control software, a CB6000 CB2000 wall controller, or Maestro software.
• With Balance the balance of right versus left speaker(s) can be adjusted.
• Save Settings will save any adjustments made on this screen.
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