Cambridge Audio - Minx Min 11 - Speaker - High Gloss White (Each) Sensitivity: 85dB (2.83 Vrms input) Frequency Response: 120Hz-20kHz Impedance: 8 Ohms compatible Recommended amplifier power: 25 - 200W Dimensions (H x W x D): 3.1 x 3.1 x 3.3. Weight: 0.42kg (0.93lbs). Price is per speaker