KEF C series Manuale utente
C series
Service manual
REVISION 1.0 Jul-2008
2-WAY BOOKSHELF SPEAKER
1
Table of Content
Service part list 2
System Specifications 3
Woofer Specifications 3
Tweeter Specifications 4
Schematic Diagram/ Exploded View of Crossover 5
Exploded View of Cabinet 6
Exploded View of C1 BK Package 8
Exploded View of C1 BK Package 9
System Frequency Response Curve 10
System Impedance Curve 11
2
Service part list
P/N Description
145B-4000+0 M.BOX C1 PR PACK
1490-7043+0 P.FOAM FOR F1
1490-7123+0 P.FOAM FOR F1 (T SHAPE)
4124-0701+0 TERMIMAL PANEL C1 JY252-7
4153-7191+0 FOOT 3M SJ-5012 BLACK KJC048-00
4154-2612+0 BLACK RUBBER FOOT FOR KHT5005
4160-1100+0 GRILLE SOCKET BK C1
SVC-GRILLE+C1 C1 GRILLE BK SPARE
SVC-TW+C1 SPART PART C1 TW
SVC-WF+C1 SPARE PART C1 WF
SVC-XOV+C1 C1 XOVER SPARE
3
System Specifications
Frequency Range 63 Hz~ 40K Hz
SPL Sensitivity 87dB @1W/m
Nominal Rating 10~100W
Dimension (H x W x D) 260x150x221 mm
Net Weight 3.2kg / pcs
Finish Black or EWL
Woofer Specifications
Rated Impedance 6+/-1.2 ohms at 1V 400 Hz
Sweep Test Sine Wave 5.5V at 20~20K Hz
Resonant Frequency (Fo) 70 +/- 14Hz at 1V
Sensitivity 86+/-2 dB/W/m
Frequency Response Fo - 3K Hz
Rated Power Input 30W
Power Test 30W RMS/Channel
(The rated power is verified by performing power handling
test by feeding rated output with IEC268-5 for 8 hours)
Heat Test 60
o
C 25~50% R.H. 24 hours
Humidity Test 40
o
C 90~95%R.H. 24 hours
Main Magnet Ø70 x Ø32x 10mm Ferrite
Bucking magnet Ø70x Ø32 x 10mm Ferrite
Voice Coil Bobbin Material Al
Cone Material Paper with PP coated
Surround Material Rubber
4
Tweeter Specifications
Rated Impedance 3 +/- 0.6 ohms at 1V 3K Hz
Sweep Test Sine Wave 1V at 1K~20K Hz
Sensitivity 86dB/W/m
Frequency Response Fo--18K Hz
Rated Power Input 50W
Power Test 50W RMS/Channel with Q1 Xover
(The rated power is verified by performing power handling
test by feeding rated output with IEC268-5 for 4 hours)
Heat Test 60
o
C /% R.H. 24 hours
Humidity Test 40
o
C 90~95% R.H. 24 hours
Voice Coil Bobbin Material Kapton
DomeMaterial Aluminum
5
Schematic Diagram of Crossover/ Exploded View of Crossover
7012-0190+0
#18AWG TWIN RED & RED/BLACK 110MM #205/205
12ohm +/-5% 5W
4.7UF/100V +-10% NP MDL ELE-C0129
RWR 5W 4.7R 5% AL
8.0UF+/-5% DFMAX5% @1KHZ 50V 10.5*27
AIR CORE 0.1MH+/-5% DCR=0.29OHM+/-10%
C
A
B
L
E
T
I
E
1
5
0
M
M
*
2
.
7
M
M
#18AWG TWIN WHITE & WHITE/BK 350MM
IRON CORE 1.7MH+/-5% 0.6OHM
#18AWG TWIN BLUE&BLUE/BLACK 0.3M 205/110
157F-805J+1-S$
1804-2090+0
7012-0170+0
7012-0120+0
157H-475K+1-OY
474B-120J+1-B
6360-1371+0
474B-4R7J+1
1806-2706+0
6360-1371+0 C
A
B
L
E
T
I
E
1
5
0
M
M
*
2
.
7
M
M
1725-331A+0001 P
C
B
F
O
R
I
Q
3
S
S
5
9
X
7
9
M
M
T
=
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.
6
M
M
P
H
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N
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C
P
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P
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635N-0002+0 W
J
R
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L
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D
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6
M
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635N-0002+0 W
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=
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.
6
M
M
3004-0103+0 MODEL LABEL FOR C1 XOVER
6
Exploded View of Cabinet
7
8
Exploded View of C1 BK Package
9
Exploded View of C1 EWL Package
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