High performance premium sound with convenience and flexibility. Connect any low-level line device to these speaker via RCA/3.5mm for instant HiFi sound. Push-button adjustable Volume, Bass and Treble with external remote control. Powerful polypropylene 5” woofer & dynamic tweeter driven by a very efficient class D high power 40Wrms built in amplifier module for excellent sound reproduction and control. Manufactured using durable and high quality components for IP51 weather resistance. Includes adjustable wall / ceiling mounting bracket. Includes external 20Vdc 3A switch-mode in-line power pack for maximum wattage. These speakers will also run on DC from 12Vdc to 20Vdc (effects wattage output).