Samick DCP-12 Manual page 21

Adjust the Volume of the Layer Voice
Use the [DATA CONTROL] knob to adjust the volume.
DATA CONTROL
Adjust the Volume of the Main Voice
Press the [LAYER] button to turn off Layer Mode.
Use the Data Control knob to adjust the Main Voice volume.
LAYER
Press the [LAYER] button again to turn layer mode back on.
LAYER
NOTE
The Main Voice will be transmitted on the selected Main MIDI Transmit
Channel. The Layer Voice will be played on the selected Main MIDI
Transmit Channel +2. For information on setting the Main MIDI Transmit
Channel, please see the MIDI Channel : MIDI Functions.
Turn off Layer Mode
Press the [LAYER] button. The Layer button's LED will go dark.
LAYER
DATA CONTROL
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