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A fire truck running the E-Q2B siren. Today Federal Signal's Q2B siren is still in wide use. The majority of users of the Q Siren are fire departments, although some ambulances and heavy rescue squads have employed the Q-siren. The Q-siren produces 123 decibels at 100 feet (30 m) with an operating current of 100 amps at 12 V DC (1.2 kW). [1]
Fire sirens are often called fire whistles, fire alarms, or fire horns. Although there is no standard signaling of fire sirens, some utilize codes to inform firefighters of the location of the fire. Civil defense sirens also used as fire sirens often can produce an alternating "hi-lo" signal (similar to emergency vehicles in many European ...
The song is noted for its sound of a siren recorded from a fire truck, heard at the beginning, as well as in the instrumental break in the middle. The edited version avoided much of the repetition of the music. The composer of Wild Cherry's hit song "Play That Funky Music" has indicated that "Fire" was the inspiration.
The stream of air causes the reed or diaphragm to vibrate, creating sound waves, then the horn amplifies the sound making it louder. Air horns are widely employed as vehicle horns, installed on large buses, semi-trailer trucks, fire trucks, trains, and some ambulances as a warning device, and on ships as a signaling device.
A fire truck uses an air horn to alert cars of its presence. Air horn - These devices force compressed air from the vehicle's air brake system against a diaphragm, creating a loud noise. Air horns used on emergency vehicles usually have a distinctive tone so they can easily be distinguished from other large vehicles, commanding urgency.
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EOWS* 612 – 1200 Watt rotating siren with 6 circular University Sound DR-42 speaker horns. The 612 was the most produced model of the SiraTone series. EOWS* 812 – 1200 Watt rotating siren, with 8 circular University Sound DR-42 speaker horns; was discontinued and succeeded by the EOWS* 612.