Cadence Acoustics CS3.65 400 Watt Peak 6.5-Inch 3-Way Speaker System Cadence CS3.65 6.5 inch three-way speaker system RMS Power: 100W/speaker, 200W/pair; PEAK Power: 200W/speaker, 400W/pair Frequency Response: 64Hz - 20 kHz Sensitivity: 90dB @ 1w/1m SPL Mounting Depth: 2.25 inch