Against the background of stakeholders respecting that sound in learning spaces is as important as sight, here’s a couple of snaps of Daniel assisting in the installation of numerous Soundhouses at a State School in Melbourne.
The Hear and Learn SoundHouse is steel, is recessed into a wall or surface mounted, and offers the capture of voices and AV audio and augmentation of all audio (including PA) to hearing impaired students, teachers and visitors. Store mikes and devices inside too and lock it all up.
See https://www.hearandlearn.com.au/hearing-augmentation-solutions