Design:  3-way, crossover points 500Hz 3.8kHz High-Frequency Driver:  25mm (1"), TWG faceplate Bass / Midrange Driver:  133mm (5.25") Bass Driver:  2 x 165mm (6.5") Recommended Amplifier Power:  20-120W Frequency Response:  40Hz-25KHz Impedance:  6 ohm Sensitivity:  90 dB Dimensions (H x W x D):  98 x 23 x 25 cm (excl. spikes) Weight (net):  27 kg pair   TAV-606C v.3 - Center Speaker   Design: 2-way, crossover point 4.5kHz High-Frequency Driver: 25mm (1"), , TWG faceplate Bass / Midrange Driver: 2 x 102mm (4") Recommended Amplifier Power: 20-100W Frequency Response: 55Hz-25KHz Impedance: 6 ohm Sensitivity: 88 dB Dimensions (H x W x D): 16.5 x 43 x 14.5 cm Weight (net): 3.5 kg pcs.   TAV-606S v.3 - Surround Speakers   Design: 2-way, crossover point 4.5kHz High-Frequency Driver: 25mm (1"), TWG faceplate Bass / Midrange Driver: 102mm (4") Recommended Amplifier Power: 20-100W Frequency Response: 55Hz-25KHz Impedance: 6 ohm Sensitivity: 86 dB Dimensions (H x W x D): 26.5 x 16.5 x 14.5 cm Weight (net): 4.5 kg pair