SM Pro Audio M-Patch 2.1: Passive Monitor Controller with Subwoofer Connection - Manual (Page 7)

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4.2 Headphone amplifier
A headphone amplifier is provided for monitoring the audio signal selected by the
‚Input Selection‘ control switches.
Simply connect a pair of headphones to the ¼” TRS headphone connector socket
and use the rotary headphone volume control knob to adjust the volume level to your
desired setting.
* Note: Use of the headphone amplifier requires the connection of the external power
supply.
4.3 Output selector switches
2.0LR/2.1 selector: When the M-Patch 2.1 is used as per the 2.1 setup below, this
switch (IN 2.0LR position) enables you to route the audio signal directly to the L/R
satellite speakers without going thru the subwoofer and it’s cross over, basically giv-
ing you full range output.
In the 2.1 position the audio signal will first flow to the subwoofer then back into
the M-Patch2.1 (XOVER/SUB RETURN) and out to the Satellite speakers. This ef-
fectively gives you a way of switching between a 2.0 and 2.1 speaker configurations.
Master 1 MUTE: A Mute switch for MASTER 1 output
Master 2 MUTE: A Mute switch for MASTER 2 output
LR SEND MUTE: A Mute switch for LR SEND / 2.0 output
SUB MUTE: A Mute switch for the SUBWOODER output