Finishes Black ash European walnutSpecificationsC7 Floorstander C5 Floorstander C3 BookshelfDesign Two-way bass reflex Two-way bass reflex Two-way bass reflexDrive units 19mm (0.75in.) aluminium HF 19mm (0.75in.) aluminium HF 19mm (0.75in.) aluminium HF2 x 165mm (6.5in.) LF 2 x 130mm (5.25in.) LF 130mm (5.25in.) LFFrequency response 36Hz - 40kHz 41Hz - 40kHz 54Hz - 40kHzCrossover frequency 2.5kHz 2.5kHz 2.5kHzAmplifier requirements 15 - 200W 15 - 150W 10 - 125WSensitivity (2.83V/1m) 91dB 90dB 88dBMaximum output 113dB 111dB 108dBImpedance 8� 8� 8�Magnetic shielding Yes Yes YesWeight 13.4kg (29.5lbs) 11.5kg (25.3lbs) 4.4kg (9.7lbs)Dimensions 965 x 203 x 286 mm 915 x 177 x 260 mm 290 x 177 x 256 mm(H x W x D) (38 x 8 x 11.25 in.) (36 x 7 x 10.25 in.) (11.4 x 7 x 10 in.)Plinth dimensions 273 x 372 mm 248 x 322 mm N/A(W x D) (10.75 x 14.65 in.) (9.7 x 12.7 in.)C1 Bookshelf C6LCR Left centre right C4 SubwooferDesign Two-way bass reflex Two-way acoustic suspension Powered bass reflexDrive units 19mm (0.75in.) aluminium HF 19mm (0.75in.) aluminium HF 1 x 200mm (8in.) LF100mm (4in.) LF 2 x 130mm (5.25in.) LFFrequency response 65Hz - 40kHz 65Hz - 40kHz 29Hz - 140HzCrossover frequency 2.5kHz 2.5kHz N/AAmplifier requirements 10 - 100W 10 - 150W N/AAmplifier N/A N/A 200W built-in Class-DSensitivity (2.83V/1m) 87dB 90dB N/AMaximum output 106dB 111dB 108dBLow pass filter N/A N/A Variable 40Hz - 140Hz, 4th-orderLow level signal inputs N/A N/A RCA phono socketImpedance 8� 8� N/AMagnetic shielding Yes Yes YesWeight 3.2kg (7lbs) 6.2kg (13.7lbs) 12.2kg (27.0lbs)Power requirements N/A N/A 100 - 240V ac ~, 50 - 60HzPower consumption N/A N/A 200VADimensions 260 x 150 x 221 mm 177 x 430 x 211 mm 345 x 320 x 377 mm(H x W x D) (10.25 x 5.9 x 8.7 in.) (7 x 16.9 x 8.7 in.) (13.6 x 12.6 x 14.9 in.)