31.HEADPHONE OUTPUT: This stereo jack (TRS) provides drive for the headphones. The level is set by the headphone level control. Tip = Left, Ring = Right, Shield = Ground.
32.HEADPHONE LEVEL: This control sets the volume of the headphones.
33.HEADPHONE/METER SOURCE: Selects the signal(s) sent to the headphone amplifier and to the output meter array. Options include the main L/R outputs, monitor1, monitor2, or a cue mix of channel 11/12 and 13/14
34.LED METER ARRAY: A 12 segment peak reading LED array monitors the level of the signals selected by the Headphone Source switch. When the switch is in the MAIN position, the meters monitor the left and right outputs. The 0dB reference level corresponds to +4dBu. In normal operation, the channel gains should be set so that the meters light near 0dB at loud points in the service. The output trim attenuator on the rear panel should then be adjusted for the desired house volume. This will give the best signal to noise ratio. The same procedure should be used on the monitor outputs, but the power amplifier input controls will need to be set for desired volume. Setting the output trim is part of the
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