emergency loudspeaker system on roof

Mobile High Powered Speaker Station (MHPSS)

The MHPSS includes a sturdy noncorrosive trailer, standard-type bolt-on drawbar eye for vehicle transportation, front and rear expanding leveling jacks to stabilize the trailer on unlevel ground, a 35 foot folding mast with mechanical or optional electrical cranking with four (or eight) attached 400 Watt speakers and a hand crank for speaker positioning.


Standard Features

  • Sturdy, non-corrosive trailer with a NEMA-4/3R stainless steel enclosure cabinet
  • Standard type bolt-on drawbar eye for vehicle transportation
  • Front and rear expanding leveling jacks to stabilize the trailer on unlevel ground
  • Temperature-compensated battery charger
  • Power On/Off circuit breakers
  • 35 foot folding mast with mechanical or optional electrical cranking with four (or eight) attached 400 Watt speakers and a hand crank for speaker positioning
  • Field proven reliability
  • Exceptional acoustic performance and intelligibility
  • Unique, compact, highly-efficient Class D Amplifier
  • 1600 or 3200 Watts of continuous audio output power (four or eight 400W speakers)
  • 30 minutes of continuous operation
  • 8 standard alert tones, plus live PA broadcast ability
  • Remote activation, testing and reporting
  • Remote silent testing
  • Standard VHF or UHF radio receives and transmits FSK data signals
  • Automatic gain control for consistent output volume
  • Very high MTBF (Mean Time Between Failures)
  • Message encryption and security coding prevent unauthorized system activations
  • Conformal-coated printed circuit boards for operation in harsh environments
  • Meets FEMA requirements

Optional Features

  • Custom alert tones and pre-recorded audio messages
  • Advanced Communication Board upgrade to MP3/WAV digital voice messaging and Mini-SD flash memory card for easy message replacement, supports 255 messages and over 100 hours of recording time
  • Trunked radio upgrade
  • Flexible, redundant communication options including IP, Ethernet, twisted pair/phone line, cellular, satellite
  • Antenna surge protector option
  • Powered generator
  • Solar power option
  • Strobe light and LED sign output

Spec Sheet (PDF)

Download Spec Sheet