Specifications: Design: 3-way, 4 drivers, 1 passive radiator, floorstanding, Bi-wiring, double rear bassreflex port, TLIE Enclosure, crossover points 700Hz 4kHz High-Frequency Driver: 25mm (1”), TPTTD, TWG faceplate, TTP Midrange Driver: 133mm (5.25”), TPACD Bass Driver: 2 x 165mm (6.5”), TPACD Passive Radiator: 165mm (6.5”), TPADR Recommended Amplifier Power: 20-280W Frequency Response (+/- 3dB): 28Hz-40kHz Impedance: 6 ohm Sensitivity: 93dB Dimensions (H x W x D): 117 x 25 x 34 cm Weight (net): 49.2 kg pair