Ci160QR Featuring KEF's sophisticated 'sit anywhere' Uni-Q driver array, which places the tweeter in the acoustic centre of the bass/midrange cone, this allows both the tweeter and woofer to act as a single point source that disperses the sound widely and evenly throughout the room. Together with the discreet Ultra Thin Bezel (UTB) design, offering the slimmest possible visible rim around the speaker, the Ci Q Series range gives you tremendous freedom to position the speakers where you please. Key Features UTB™ Ultra Thin Bezel 160mm (6.5in.) Uni-Q driver array 19mm (0.75in.) Aluminium dome tweeter and 'tangerine' waveguide Gold plated spring loaded binding posts   Nominal Impedance 8 Ω Sensitivity 89dB (2.83V/ 1m) Frequency Response 38Hz - 34kHz (±6dB) 2pi/open-backed Crossover Frequencies 3.0kHz Drive Units LF: 160mm (6.5in.) HF: 19mm (0.75in.) Recommended Amplifier Power 10 - 125W Product external dimensions Diameter : 234.6mm (9.24in.) Depth : 98mm (3.86in.) Cut-out dimensions Diameter :196mm (7.71in.) Mounting depth from surface Product only: 91mm (3.58in.) Optional rough in frame RIF160R Net Weight 2.05kg (4.51lbs.) Unit measurement Piece Document Download User Manual Ci Series Pamphlet Ci Series Specification Sheet Ci Series Minimum Cabinet Volume Chart EASE GLL Data Product drawing