Passive hardwired speakers are the most common type of on-wall speaker. They are powered and controlled from an external amplifier which is connected to the speakers via speaker cable.
Passive on-wall speakers have many applications and there are many different speaker types. On-wall speakers are often used for home cinema applications, where they can be installed around a wall mounted TV or used as surround speakers. Another common application is for all-weather outdoor speakers, where on-wall speakers provide flexible mounting options and Hi-Fi quality sound.