API Audio The Channel Strip - Manual (Page 26)

CHANNEL OUT: Main Channel Strip output
• Fed from 325 Line-Driver
• Balanced, low-impedance +10dBu line level
• Male XLR connector
6.2.2 Soft Mute
CUT: Mutes main output
• Silent soft mute
• Remote control via 9-pin D-sub connector on the rear panel
• Illuminates in red when engaged
6.2.2.1 Remote Mute Control
The soft mute (CUT) can be remotely controlled via the EXT. MUTE COMMANDS connector
on the rear panel. The remote circuit operates in parallel with the on-board CUT switch, but
overrides the on-board CUT switch when activated.
EXT. MUTE COMMANDS (External Mute Commands): Control port for
the soft mute (CUT) switch
• Overrides on-board CUT switch when activated
• 9-pin D-sub connector
9-pin D-sub pin-out for remote mute control:
• Pin 1 – 5V gnd
• Pin 6 - +5V
• Pin 9 – Cut switch output active low
• Pin 5 – External mute command input active +5V high
6.2.3 VU Meter
The VU meter will normally display the output of the 325 Line-Driver.
The output of the 512C Preamp will be displayed the when the VU PRE switch is engaged.
VU PRE (VU Preamp): Routes the output of the 512C Preamp to the VU meter input
• Illuminates when engaged
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