Electric horn loudspeakers are also known as tweeters. It is mainly composed of a magnetic circuit system, a vibration system and a sound assisting cylinder. The magnetic circuit system and the vibration system are combined in one piece, which is collectively called a pronunciation head. The head and the helper are separated and integrated into each other.
The magnetic circuit system of the electric horn loudspeaker is composed of a permanent magnet and a soft iron, and the magnetic field is mainly concentrated in the gap. The vibration system consists of a diaphragm with a voice coil, and the voice coil is centered in the magnetic gap. When the audio current passes through the voice coil, the voice coil drives the diaphragm to move back and forth, causing the air to vibrate. Since the front of the pronunciation head is equipped with a helper, the air can be resonated, and a loud sound is emitted.
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