MODEL Q350 DESIGN Two-way bass reflex DRIVE UNITS 165mm (6.5in.) aluminium Uni-Q 25mm (1in.)vented aluminium dome HF FREQUENCY RANGE FREE FIELD 42Hz (-6dB) FREQUENCY RESPONSE 63Hz-28kHz (3dB) CROSSOVER FREQUENCIES 2.5kHz MAXIMUM OUTPUT 110dB AMPLIFIER REQUIREMENTS 15-120W SENSITIVITY 87dB (2.83V/1m) NOMINAL IMPEDANCE 8 Ohms (min.3.7 Ohms) DIMENSIONS H x W x D: 358 x 210 x 306 mm 362 x 210 x 306 mm (with Rubber Feet)