ESCO Speakers
A speaker is a device that converts input electric vibration into physical vibration. The internal diaphragm is moved by an electric current to vibrate the air. By combining several types of speakers, you can generate a three-dimensional sound. Typical types are passive speakers that use an external amplifier without a built-in amplifier, USB speakers that are mounted and used on equipment, active speakers that can amplify signals with the built-in amplifier, stationary speaker phones with microphones, etc. There are also types of cabinets that contain speaker units. The closed type has a design that does not emit the sound waves generated from the back of the unit, and is characterized by its easy reproduction of bass. The bass reflex type produces a stronger bass than the closed type with holes on the front and back.