How do I set UNIT-4 to left, right or mono?

Press the Stereo/Mono button on the back. It switches between Left, Right, and Mono.

Steps

1. Press the Stereo/Mono button once.
2. Press it again until the speaker shows Left, Right, or Mono. Mono plays both channels.

With two UNIT-4, set one to Left and the other to Right.

If it doesn't work

• Both UNIT-4 play the same channel. Press the Stereo/Mono button on one of them until it shows the other channel.