What is a Passive Radiator and What Does it Do in a Sound System?

    1. A speaker enclosure usually contains active speaker drivers and a passive speaker driver commonly known as a passive radiator.
    2. Unlike the real active speakers within the speaker enclosure, the passive radiator does not use electric current.
    3. The active speakers have a voice coil that receives electric sound signals for projection.
    4. The sound projection process generates air pressure within the speaker enclosure.
    5.  Also called a drone cone, the passive radiator feeds off this air pressure to generate a deep resonate voice thus enriching the bass.
    6. A passive radiator uses low energy to maximize the sound output of your home theater or stereo.


Also read: What is an Amplifier and How Does it Work?