Controls

Individual channel controls

Channel

The input channel numbers.

Solo. Specifies that the channel is to remain open while all others are muted. Any other channel with Solo on will also remain open.

Inverts the polarity of the signal.

Mutes the audio input signal.

Level

Sets the input signal level before the gate.

Open mode

The conditions that will cause the channel to be opened when the input signal level exceeds the channel threshold level.

Manual

The channel is always open, regardless of the input signal level.

Filibuster

The channel is opened only if no other channel is open.

Auto

The channel is opened whenever the input signal exceeds the threshold level.

Priority

The channel is opened only if no channel with a higher priority is already open.

Priority Level

The priority level for the input channel.

Open

Lit (green) when the input channel gate is open.

Hold Time

The length of time in milliseconds that the gate will remain open after the input signal level has dropped below the threshold level.

Threshold

The input signal level above which the gate will open.

Hysteresis

Lowers the threshold level so that the gate closes only when the signal drops off.

When Hysteresis is set to 0dB, the gate will open when the signal exceeds the threshold level and will close when the signal falls below the threshold level. By adding a few dB of hysteresis, the gate will only close again once the signal drops well below the threshold value.

When correctly set, hysteresis ensures that a speaker whose voice gets louder and quieter does not cause the channel to close unnecessarily.

Gate

Background Percentage

Sets how much to gradually increase the Threshold setting by when the overall volume of the inputs into the mixer increases.

This prevents gates from opening unintentionally as the level of background noise received by the mixer increases.

Depth

The attenuation provided by the gate when in its closed state.

NOM (Number Of Microphones)

Last Mic On

When switched on, holds the last microphone on, even if the signal level falls below the threshold level. The microphone will remain on until the signal level of another input is higher than the threshold level; when this occurs, the microphone in question will stay on until the signal level of the next microphone is higher than the threshold level, and so on.

NOM

The number of microphone channels currently open.

NOM Linear

When switched on, linear mode is selected. The output is attenuated by the amount specified by the NOM Gain Step setting for each output channel opened after the first.

When switched off, exponential mode is selected. The output is attenuated by the amount specified by the NOM Attenuation Setup control each time the NOM value doubles. The output attenuation is adjusted in fractional attenuation steps, as single channels open and close. The exponential response produces an optimally high gain before feedback for all possible open mic counts.

Both options help prevent feedback in a system while keeping the overall sound level reasonable when several participants speak simultaneously.

NOM Response

Determines how quickly the NOM attenuation is applied at the output in response to a change in the NOM value.

NOM Gain Step

The amount of gain by which all inputs will be attenuated when each single additional microphone is added.

NOM Min Gain

The lowest gain level for the microphones. Any microphones added after this level has been reached will not cause the system to change the gain on the open microphones.

Gain

Indicates the attenuation currently applied at the output due to the current number of open microphones and the current NOM Mode and NOM Attenuation Setup settings.

Out

Mutes the audio output.

Inverts the polarity of the signal.

Controls the output level from the mixer by reducing all contributions to the mix bus.