What is a Bullhorn?
A bullhorn, also called a megaphone or loudhailer, combines a microphone and an amplified speaker to magnify a human voice. Some bullhorn models are handheld, with the user speaking into a trigger or voice-activated microphone. Other bullhorn types feature a shoulder strap and a keyable microphone similar to a CB radio handset. Both feature a conical loudspeaker which amplifies the voice and sends it out over a considerable distance. The bullhorn evolved from a non-electrical device called a megaphone. This handheld voice amplifier worked on the principle that sound waves could be concentrated and focused in a cone. College cheerleaders, law enforcement officers, movie directors and military drill teams often used megaphones to amplify their cheers or commands. The modern electronic bullhorn still uses a basic conical design for the loudspeaker. Sensitive microphones have reduced the need to shout into the device, however. A bullhorn’s power output is often measured in watts. A 35 watt
