Yamaha CBR15 15 inch Passive Loudspeaker 15 inch 500-watt 2-way Passive loudspeaker with lightweight plastic cabinet Rugged, Highly Portable Enclosure Design - Custom Designed Transducers and Wide-Dispersion Constant Directivity Horn for Powerful High-Definition Sound Highly-sensitive LF driver puts out full bass even at lower volumes - HF-protection circuit prevents tweeter damage due to excessive signal levels Impressive 500W RMS power handling 1/4 inch and speakON inputs for flexible connectivity