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Federal Signal Rumbler® Low Frequency Siren for Police Vehicles

  • Sale
  • Regular price $699.99

The Rumbler®, intersection-clearing system, demonstrates the long-standing commitment of Federal Signal to continue as the technological leader in audible warning and operator safety. The Rumbler is particularly effective for Police and Fire/EMS applications when used in dense urban environments with heavy vehicle and pedestrian traffic. 

  • Improves emergency vehicle operator safety.
  • Produces penetrating/vibrating low frequency siren sound waves.
  • Interacts with most 100/200-watt emergency vehicle siren amplifiers.
  • Enabled via any emergency vehicle steering wheel horn ring.
  • Eight second safety timer provides automatic tone shutdown.
  • Highly effective in dense urban environments with heavy vehicle traffic.
  • Three-year warranty


Improves Intersection Warning Effectiveness
The Rumbler introduces a revolutionary new concept to audible warning through its ability to interact with most 100/200-watt siren amplifiers and provide secondary, low frequency duplicate tones. Low frequency tones have the distinct advantage of penetrating solid materials allowing vehicle operators and nearby pedestrians to FEEL the sound waves.

Secondary System with Built-in Safety
The Rumbler system senses the primary siren tone signal, and reduces the signals’ frequency by 75%. It then amplifies the sound through a pair of high output woofers. The system’s timer allows the tone to sound for eight seconds, providing highly effective warning at hazardous intersections, and then automatically shuts off.

A complete Rumbler intersection-clearing system consists of an amplifier, with built-in timer and two subwoofers. Vehicle specific mounting hardware is ordered separately. This system can be paired with most 100/200-watt emergency siren amplifiers.



Voltage 9-15 VDC
Operating Current 12A max
Polarity Negative ground only
Standby Current OmA nominal
Operating Temperature Range -30˚C to +65˚C
Frequency Ranges 182 to 400 Hz
Output Voltage 64 VDC (nominal) peak-to-peak
Output Power 80W
Dim. (H x L x D) Amplifier - 1.3 in (3.5 cm) x 6.3 in (15.6 cm) x 5.7 in (14.5 cm)
Pair of Woofers - 8.5 in (21.6 cm) x 7.3 in (18.4 cm)