Crown K1 Service Manual

K Series Service ManualRev A.
Line Voltage Conversion 4-1
©1999 Crown International, Inc.
P12
P13
D2
C2
R1
P8
P9
P10 P11
P4
K1
1
P6
L1
D1
C1
C3
P5
P7
1
4
7
3
6
9
L2
1
1
2
5
8
4.1 Line Voltage Conversion
The K Series amplifier can be configured to operate at
any line voltage in the world. It is also made to operate
at 50- or 60-hertz frequency with no modification. To
convert from one line voltage to another, change the
Voltage Plug (P7), a 9 pin connector plug on the Con-
trol PWA. Refer to Figure 4.1 for the Crown Part Num-
ber of the plug you need. These plugs are available
from the Crown Parts Department.
The Voltage Plugs have jumpers installed which con-
figure the primary power transformer windings for the
appropriate operating voltage. Figure 4.1 has informa-
tion on jumper location for each voltage.
When wiring the molex connector the proper insertion
and removal too should be used (example, Amp
#458994-2).
When converting from the 100V range to the 200V range,
or vice versa, be sure and change the back panel line
fuse. The fuse values and Crown Part Numbers are
listed in Figure 4.1.
For your reference, Figure 4.2 shows the Control PWA,
P7, and the pin configuration of P7. To access the Con-
trol PWA, remove the bottom cover of the amplifier.
The Control PWA is located in the center of the chas-
sis. For additional information on disassembly and as-
sembly of the amplifier refer to Chapter 5.
Figure 4.2 Control PWA with Voltage Plug
Figure 4.1 Line Voltage Selection Table
Voltage Plug
4 Line Voltage
Conversion
* Voltage Plug not available. Voltage may be obtained by positioning the jumpers as indicated.
The Crown Part Number for the Voltage Jumper Wire is A11555-P025P.
The Crown Part Number for the 9-Pin Molex Connector is C10303-3.
Voltage 100V 120V 130V 200V 220V 230V 240V 250V
Plug Part # 101230-1 101231-1 NA* NA* 101232-1 101233-1 101234-1 NA*
Voltage 5–7 5–8 1-8 2–4 2–4 2–4 1–4 1–4
Plug 6–2 6–1 3-4 5–7 5–8 5–9 5–8 5–9
Jumpers 3–4 3–4 5-9
Fuse K1: A10285-27, 15A K1: A10285-40, 8A
K2: A10285-28, 20A K2: A10285-26, 10A

Crown K1 Specifications

General

Signal to Noise Ratio	> 100 dB
Total Harmonic Distortion	<0.05%
Input Sensitivity	1.4V
Weight	22 lbs (10 kg)
Channels	2
Input Impedance	20 kOhms balanced, 10 kOhms unbalanced
Cooling	Convection cooled
Frequency Response	20Hz - 20kHz
Dimensions	19" x 3.5" x 11.5" (483 x 89 x 292 mm)