4'' two-way PA Wall Speaker with gimbal bracket

MS-224 4'' waterproof two way PA Wall Speaker with gimbal bracket  This wall mounted speakers has gimbal bracket,so that the orientation can be adjusted vertically and horizontally The use of constant power Horn Speakers and how to match the appropriate Power amplifier The simple understanding of constant pressure Horn Speaker is to drive speakers with voltage. The characteristics are that the output voltage is large and the current is small. Constant pressure speakers are mainly used...