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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.
Promethean Technical Support
- Release notes for ActivInspire v2.21 (released 5 January 2021)
- Release notes for ActivPanel Elements Series v4.3.0 (released 16 December 2020) and v4.3.1 (released 7 January 2021)
- Release notes for myPromethean portal v1.4 (released 2 December 2020)
- Release notes for ActivConnect OPS-G v2.4.4 (released 16 October 2020)
- Release Notes for ActivPanel Elements Series v4.2.0 (released 30 September 2020)