[Anonymous]

Hi neelydarby,

Thanks for posting on the Support Community.

The PRM-35 projector doesn’t carry any audio output from the HDMI source, as such you need need to use some form of third party equipment/adapter to allow the sound to come through the ActivBoard using the available 3.5mm audio sockets on the ActivBoard amplifier and the Apple TV.

Kind regards,
Adam
Promethean Technical Support