Bass/Mid Driver: 6-1/2" Polyglass cone mid-bass * High-Freq. Driver: 1" Aluminum/Magnesium inverted dome tweeter * Freq. Response: 45Hz - 28kHz * Amplifiers: 100W / 60W - Class A/B * Special Features Die cast aluminum cabinet LF/HF shelving - Desktop Notch Filter Rubber decoupling platform