Modulator High-Powered Speaker Array

Modulator High-Powered Speaker Array

  • Light-weight, compact design
  • Utilizes Federal Signal Ultravoice™ for control and amplification
  • Excellent frequency response for clear voice reproduction
  • 360º coverage without sound variation in horizontal planes
  • Easy servicing through convenient access panels
  • Anechoic chamber-certified

Shown with optional QuadraFlare lights

Read More [+]


Federal Signal’s Modulator High Powered Speaker Array offers the same proven technology as the original Modulator with the exception of a smaller compact chassis. Modulator provides a flat frequency response up to 2000Hz producing intense warning signals and digital voice messaging over a large area. The Modulator design enables the siren to produce a high sound level and intelligible voice communications.
The innovative omni-directional electronic Modulator speaker array consists of modules that utilize four 100 watt drivers. It also provides clear voice communication and offers warning signals which are produced by Federal Signal’s UltraVoice™ electronic controller and amplifier system. Custom tones and professionally recorded voice messages for the UltraVoice controller are available and can be purchased upon request.
The Modulator High Powered Speaker Array combined with the UltraVoice controller is ideal for community/municipal, industrial and military applications where immediate instruction is necessary. 
The Modulator and UltraVoice controller can be networked via radio, IP, landline, cellular and/or satellite communications. Powering is available in AC, DC, or solar. The system typically operates from batteries which are charged from either AC or Solar. Federal Signal can also provide customized solutions to fit your special applications.



1Add the letter C to the Modulator model name for steel/concrete pole mount model
*The bottom module contains no active devices and is simply used as a reflective surface.
**Based on far field measurements
***Coverage based on 10 dB(C) distance doubled loss factor


Frequency Response200-2000Hz
Paint TypeTGIC-polyester powder coat
Modulator Horn TypeHyperbolic flare
Horizontal Coverage360º +/- 1 dB(C)
MOD1004B251 lbs
MOD2008B377 lbs
MOD3012B503 lbs
MOD4016B629 lbs
MOD5020B755 lbs
MOD6024B881 lbs
MOD8032B1133 lbs

Ordering Info

Model Types
MOD8032BCElectronic Speaker Array, Eight Modules for Steel/Concrete Pole Mounting
MOD8032BElectronic Speaker Arry, Eight Modules
MOD6024BCElectronic Speaker Array, Six Modules for Steel/Concrete Pole Mounting
MOD6024BElectronic Speaker Array, Six Modules
MOD5020BCElectronic Speaker Array, Five Modules for Steel/Concrete Pole mounting
MOD5020BElectronic Speaker Array, Five Modules
MOD4016BCElectronic Speaker Array, Four Modules for Steel/Concrete Pole Mounting
MOD4016BElectronic Speaker Array, Four Modules
MOD3012BCElectronic Speaker Array, Three Modules for Steel/Concrete Pole Mounting
MOD3012BElectronic Speaker Array, Three Modules
MOD2008BCElectronic Speaker Array, Two Modules for Steel/Concrete Mounting
MOD2008BElectronic Speaker Array, Two Modules
MOD1004BCElectronic Speaker Array, One Module for Steel/Concrete Mounting
MOD1004BElectronic Speaker Array, One Module
Replacement Parts