I have a sonos beam connected to a Panasonic TX-40EX700B using a sky Q mini box to provide the picture source. The sky Q mini is connected to HDMI 1 and the beam via the HDMI arc port on the TV.
Every time I change a channel the beam makes an loud beep for a few seconds then the sound resumes as normal. If I change the sky mini sound settings to 'normal' from 'DD' the beep disappears.
i'm not sure whether this is a limitation with the beam, TV or sky Q mini box, at the moment I watch everything in stereo as I'm worried the high frequency beep could in some way damage the sound bar at higher volumes.
I'm hoping somebody may have experienced this problem and found a work around.