InfoComm 2021: Holosonics Audio Intros X Series Spot Light for Narrow-Beam Sound Transmission October 30, 2021 | Home / October 30, 2021 rave-video / InfoComm 2021: Holosonics Audio Intros X Series Spot Light for Narrow-Beam Sound Transmission InfoComm 2021: Holosonics Audio Intros X Series Spot Light for Narrow-Beam Sound Transmission