PHD 61KITRED, 6.5 "(16.5cm) pair of 2-way component system, the RED Series 100W RMS 200W MAX Impedance: 4 ohms Frequency response: 35Hz - 20kHz Sensitivity: 91dB @ 1W/1m 1.3 TW neodymium ferrofluid-cooled tweeter External 12dB crossover