Pioneer GM-X942 Mode D'emploi page 10

Connecting the Unit
Connecting the Speaker wires
The speaker output mode can be two-channel (stereo) or one-channel
(mono). Connect the speaker leads to suit the mode according to the
figures shown below.
Two-channel mode (stereo)
One-channel mode (mono)
9
Speaker (Left)
Speaker (Right)
Speaker (Mono)