System Specifications; Woofer Specifications - KEF C 7 Service Manual

System Specifications

Frequency Range
SPL Sensitivity
Nominal Rating
Dimension (H x W x D)
Net Weight
Finish

Woofer Specifications

Rated Impedance
Sweep Test
Resonant Frequency (Fo)
Sensitivity
Frequency Response
Rated Power Input
Power Test
Heat Test
Humidity Test
Main Magnet
Bucking magnet
Voice Coil Bobbin Material
Cone Material
Surround Material
36 Hz~ 40K Hz
90dB @1W/m
15~125W
965x203x286 mm
13.4kg / pcs
Black or EWL
6+/-1.2 ohms at 1V 400 Hz
Sine Wave 6V at 20~20K Hz
43 +/- 8Hz at 1V
88+/-2 dB/W/m
Fo - 3K Hz
50W
50W RMS/Channel
(The rated power is verified by performing power handling
test by feeding rated output with IEC268-5 for 8 hours)
o
60 C 25~50% R.H. 24 hours
o
40 C 90~95%R.H. 24 hours
Ø80 x Ø40x 15mm Ferrite
Ø70x Ø32 x 8mm Ferrite
Al
Paper with PP coated
Rubber
3