Horn Loudspeaker

The structure of a horn type speaker consists of two parts: a vibration system (tweeter) and a horn. The vibration system is similar to a paper cone speaker, except that its diaphragm is not a paper cone, but a spherical top shaped diaphragm. The vibration of the diaphragm radiates sound waves into the air through the horn (reflected twice). It has a high frequency and high volume, and is commonly used for outdoor and square sound reinforcement.
Horn type
The horn type speaker originated from the phonograph. In 1928, Wente and Thuras produced their high-efficiency horn type speaker receiver. The principle of a horn type speaker is that the diaphragm pushes the air located at the bottom of the horn to work. Due to the high sound resistance, the efficiency is very high. However, due to the shape and length of the horn, it can affect the sound quality, and it is not easy to replay low frequencies. High efficiency horn is mainly used in the field of professional sound reinforcement.
Belt type
During the gradual formation of the speaker technology mentioned above, people began to understand that an ideal transducer should use a thin vibrating film that can pass through an electric current, and they began to conceive of band type speakers.
In January 1923, Schottky and Gerlach of Siemens Halske applied for the first ribbon speaker patent. It installs a horizontal wavy pure aluminum film between the poles of the magnet, which can reduce longitudinal hardness and resonant frequency.