The Cadence CS3.65 is a 6.5 inches 3-way speaker system. It has an RMS Power of 100 Watts per speaker (200 Watts per Pair), and a PEAK Power of 200 Watts per speaker (400 Watts per pair). The frequency response is 64Hz - 20 kHz and has a sensitivity of 90dB at 1w/1m SPL. It is a 4-ohm impedance system with a mounting depth of 2.25 inches. The CS3.65 has an injection molded polypropylene woofer cone with a heavy duty butyl rubber surround, a 0.75 inches poly dome tweeter, and on oversize 1 inches high temperature aluminum voice coil. All Cadence Momentum 3-way systems include a +3dB equalization switch. Includes custom molded grills. Product comes with a two (2) year warranty.