If your remote or front panel has a button marked "multi-source" then hit that, and immediately hit the source you want to go to second set of speakers. Or if the remote has a slide switch for multisource, go there and select your source.
Last thing is to bump up the volume by hitting multi-source then volume up.
There is no truth anymore. Only assertions. The internet world has no interest in truth, only vindication for preconceived assumptions.
