As the name suggests, the tweeter unit is a speaker unit designed to play back high-frequency sounds. Its structural forms mainly include solution type, cone type, ball top type and aluminum strip type.
working principle
Electric speakers are also called dynamic speakers; they are electroacoustic transducers that apply the electrodynamic principle; they are the most commonly used and widely used speakers. There are three main reasons for this:
1. Electric speakers have a simple structure and are easy to produce, and they do not require a large space. As a result, they are cheap and can be widely used.
2. This type of speaker can achieve excellent performance and obtain a uniform frequency response in the mid-range band.
3. This type of speakers is constantly being improved. The history of speaker development over the past few decades is a history of continuous improvements in speaker design, technology, and materials, as well as a history of performance advancing with the times.
The shapes of electric speakers are mostly cone-shaped and dome-shaped; they have the structure of a cone speaker.
The structure of the cone speaker can be divided into three parts:
1. The vibration system includes diaphragm, voice coil, centering support, dust cover, etc.
2. The magnetic circuit system includes magnetically conductive upper plates, magnetically conductive columns, magnetically conductive lower plates, magnets, etc.
3. The auxiliary system includes the basin frame, edge holder, wiring frame, and phase plug.
According to Faraday's law, when a current-carrying conductor passes through a magnetic field, it will receive an electrodynamic force, the direction of which conforms to Fleming's left-hand rule. The force, current, and magnetic field directions are perpendicular to each other. The magnitude of the force is proportional to the current, wire length, and magnetic flux density. Proportional. When the voice coil inputs alternating audio current, the voice coil receives an alternating driving force to produce alternating movement, driving the paper cone to vibrate, repeatedly pushing the air and producing sound.
