Special order items are non-cancelable, non-returnable, and non-refundable. This system can be paired with most 100/200-watt emergency siren amplifiers. Vehicle specific mounting hardware is ordered from the drop-down list. A complete Rumbler intersection-clearing system consists of an amplifier, with built-in timer and two subwoofers. The Rumbler is particularly effective when used in dense urban environments with heavy vehicle and pedestrian traffic. The system's timer allows the tone to sound for eight seconds, providing highly effective warning at hazardous intersections, and then automatically shuts off. It then amplifies the sound through a pair of high output woofers. The Rumbler system senses the primary siren tone signal, and reduces the signals' frequency by 75%. Low frequency tones have the distinct advantage of penetrating solid materials allowing vehicle operators and nearby pedestrians to FEEL the sound waves. The Rumbler improves intersection warning effectiveness by introducing 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. Dimensions of the pair of Woofers: 8.5" H (21.6 cm) x 7.25" (18.The Federal Signal Rumbler Intersection Clearing System demonstrates the long-standing commitment of Federal Signal to continue as the technological leader in audible warning and operator safety.Polarity Negative grounded systems only.Highly effective in dense urban environments with heavy vehicle traffic.10 second safety timer provides automatic tone shutdown.Enabled via any emergency vehicle steering wheel horn ring.Interacts with most 100/200- watt emergency vehicle siren amplifiers.Produces penetrating/vibrating low frequency sound waves. Improves emergency vehicle operator safety.This system can be paired with most 100/200-watt emergency siren amplifiers and the Rumbler system is most effective when used as an intersection-clearing device where heavy vehicle and pedestrian traffic is present. A complete Rumbler intersection-clearing system consists of an amplifier, a timer, two subwoofers, and vehicle specific mounting hardware(sold separately). The result is a highly effective backup emergency tone, especially when transitioning hazardous traffic intersections. The systems' timer allows the tone to sound for 10 seconds, and then automatically shuts off. This gives the system the ability to sense the currently enabled siren tone signal, reduce the signals' frequency by 75%, and amplify the sound through a pair of high output woofers. In addition to the primary siren amplifier and speaker, the Rumbler adds a secondary amplifier. Low frequency tones have the distinct advantage of penetrating and shaking solid materials allowing vehicle operators and nearby pedestrians to FEEL the sound waves, and perhaps even see their effects through a shaking rear-view mirror. This system has the ability to interact with 100/200-watt siren amplifiers and provide secondary, low frequency duplicate tones. The Rumbler introduces a revolutionary new concept to audible warning. Improves Intersection Warning Effectiveness The Federal Signal Rumbler ®, intersection-clearing system, demonstrates the longstanding commitment to continue as the technological leader in warning sound, Siren development, and operator safety.
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