Details: Full range loudspeakers offering KEF audio quality at a remarkably affordable price, the new Ci 160.2 (160mm (6 1/2") driver) and Ci 130 (130mm (5 1/4") driver) speakers are available either with square bezels for wall mounting (FS) or round bezels for ceiling mounting (FR). Like all other Ci Series speakers, their bezels and grilles can be painted to specification or covered by material to suit the style of the room. Loud Speaker Square Bezel Full range single driver design Frequency response at 15° horizontally off axis ±3 dB 75 Hz - 16 kHz Amplifier requirements 10 - 50 W Sensitivity (2.83V/1m) 88 dB Maximum output 105 dB Impedance 8 Ohms White Finish