When it comes to sound systems, a tweeter refers to an audio driver that is specifically designed to produce high-frequency sounds. Tweeters typically use a small and lightweight diaphragm or a small piezoelectric ceramic to produce high-frequency sound. Unlike woofers, tweeters must have a very light diaphragm or piezoelectric ceramic in order to vibrate quickly and produce high-frequency sound.
In sound systems, tweeters are typically used in conjunction with woofers and mid-range drivers to produce full-range sound. Tweeters can be dome-shaped, cone-shaped, or other shapes, and different shapes of tweeters have different acoustic characteristics.