400w high power loud air raid siren speaker

400w high power loud Horn speaker load with 4*TD-100 neodymium driver units for Air Defense waring use

     Air defense alarm equipment consists of several parts:
1. Civil Defense siren : Siren is divided into two types: motor type and electroacoustic type. The motor type has a motor as the main device of the alarm, which converts mechanical energy into sound. The electro-acoustic type is composed of the host function and the speaker.
2. Control equipment: Control equipment is divided into two types: wired control and wireless control.
3. Power supply system: The power supply system is divided into two types: mains power supply and self-power supply.
General air defense alarm equipment is installed on the roof of buildings in the city, and is managed by the armed department or the security department of the streets, enterprises and institutions. Sound is a "mechanical" wave that travels through the air to people's ears. So as long as the method can make the air "oscillate", it can make sound.
The Air Defense Siren Speaker (electromagnetic) in the audio converts the electrical signal of the audio frequency into mechanical vibration through the Air-Raid Siren Speaker diaphragm (paper cone, etc.), pushes the air in front, and transmits it to the ear, and because many buildings in the city have this kind of vibration. The sound is carried to the installation, so sirens can be heard in every corner of the city.