active horn speaker for outdoor monitoring use 

MS-709MH  active horn speaker for outdoor monitoring use 1.Slim and lightweight housing. 2. ABS shell is smooth and fine in texture, and the material selection is superior.  3.Monitor horn speaker is installed Easily.  4.Horn Speaker Monitor has longer life span, lower cost. 5.Advanced technology for the whole product. 6.sound concentration, strong penetration. Specification Model Number MS-709MH Input 12V Freq.Resp.…