Two Way System with two 1.1 Tweeters, two crossovers and two FB 4.1 Mid/Basses 1" Silk Dome Neodymium Tweeter 4" Fiberglass Cone Mid/Bass Driver with High-Tight Fiber Basket 12dB Two Way Passive Crossover; Power Handling RMS/MAX: 50/100 Watts Sensitivity (SPL@1W): 89dB Frequency Response: 55Hz - 20Khz