After seeing that Unity/CJ184 hack job, which made me think back to how Federal Signal once made an electronic siren speaker base for beacons like the Beacon Ray, I wonder: did any manufacturers besides Federal Signal, Whelen or Dietz make electronic siren speaker/beacon combos or electronic speaker bases?
EDIT: Added Whelen because I nearly forgot about the "Darth Vader" beacons.
EDIT: Added Whelen because I nearly forgot about the "Darth Vader" beacons.
