McIntosh C2300, Service Manual

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PERFORMANCE SPECIFICATIONS
General Specifications
Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
+0, -1dB from 10Hz to 100,000Hz
Total Harmonic Distortion
0.08% from 20Hz to 20,000Hz
Rated Output (Main)
2.5V Unbalanced, 5V Balanced
Maximum Voltage Output
8V RMS Unbalanced, 16V RMS Balanced
Sensitivity (for rated output)
High Level, 450mV unbalanced, 900mV balanced
Phono MM, 4.5mV
Phono MC, 0.45mV
Signal To Noise Ratio (A-Weighted)
High Level, 93dB
Phono, 80dB
Input Impedance
High Level, 20K ohms unbalanced, 40k ohms balanced
Phono MM, 47K ohms; 50 to 750pF, in 50pF steps
Phono MC, 25, 50, 100, 200, 500 or 1,000 ohms; 100pF
Maximum Input Signal
High Level, 5V Unbalanced, 10V Balanced
Phono MM, 50mV
Phono MC, 5mV
Voltage Gain
High Level to SRVR(REC) Output: 0dB
High Level to Main Output: 15dB
Phono MM to Record Output: 40dB
Phono MC to Record Output: 60dB
Output Impedance
220 ohms
Headphone Load Impedance
16 ohms to 250 ohms
Tube Compliment
MM Phono Circuitry: 2 - 12AX7A
MC Phono Circuitry: 2 - 12AX7A
High Level Circuitry: 2 - 12AX7A
Power Requirements
100 Volts, 50/60Hz at 75 watts
110 Volts, 50/60Hz at 75 watts
120 Volts, 50/60Hz at 75 watts
220 Volts, 50/60Hz at 75 watts
230 Volts, 50/60Hz at 75 watts
240 Volts, 50/60Hz at 75 watts
Standby Power, less than 2 watts
Note: Refer to the rear panel of the C2300 for the
correct voltage.
Overall Dimensions
Width is 17-1/2 inches (44.45cm)
Height is 6 inches (15.24cm) including feet
Depth is 18 inches (45.72cm) including the Front Panel,
Knobs and Cables
Weight
29.5 pounds (13.41 kg) net, 44.9 pounds (20.41 kg) in
shipping carton
Shipping Carton Dimensions
Width is 25 inches (63.5cm)
Depth is 27 inches (68.6cm)
Height is 12 inches (30.5cm)
NOTES
1
. The heavy lines on the schematic denote the primary
signal path.
2. Unless otherwise noted, all voltages indicated on the
schematics are measured under the following condi-
tions:
a. AC input at 120 volts, 50/60Hz.
b. All voltages are +/-10% with respect to ground. A
high impedance (10 megaohm) voltmeter must be
used.
3. Unless otherwise specified:
a. Resistor values are in ohms.
b. Capacitor values are microfarads (uF).
c. Inductor values are in microhenries (uH).
4. On PC board drawings, Square pad indicates:
a. Polarized Capacitors - Positive
b. Diodes - Cathode
c. Others - Pin 1
5.
WARNING
Parts marked with the symbol have critical
characteristics. Use only replacement parts recom-
mended by the manufacturer.
6. Use McIntosh Remote Control Model HR061 with the
C2300.
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