What is the power of Audi a7bo 12 speakers?

The power of Audi a7bo 12 speaker is about 15W. Power depends not only on the size of the speaker, but also on the size and material of the magnetic steel and voice coil. The size of sound depends not only on power, but also on its sensitivity and maximum sound pressure level, which can also be calculated by power and sensitivity.

The origin of trumpet

The electric horn originated about 100 years ago. At that time, in order to warn and attract the attention of pedestrians and other vehicles, drivers often used all items that could make a loud noise to make a sound. A famous German company found a business opportunity and thought it could develop a sound device that could make people hear more sounds. 19 13 years, this company applied for the world's first patent for electric horn.

With the development of science and technology, the technology of alarm devices is also improving, and the types are also increasing, such as electric pump gas horn and electric control gas horn.