McIntosh MC-206 Service manual
PO WER AMPLIFIER
CONTENTS
Performance Specifications ........................................ 2
Notes ......................................................................... 2
Rear Panel .................................................................. 3
Section Location ........................................................ 3
Block Diagram ........................................................... 4
Interconnection Diagram ...................................... 5 - 8
Multi-channel Schematic and PCB ............................. 9
SERVICE MANUAL
Heatsink Schematic and PCB.............................. 10 - 12
Driver Schematic and PCB ................................. 13 - 15
Capacitor Schematic and PCB ........................... 15 - 16
Meter Schematic and PCB ................................. 17 - 21
Parts List ............................................................ 22 - 24
Exploded Views and Parts Lists .......................... 25 - 28
Repacking Instruction .............................................. 29
PERFORMANCE SPECIFICATIONS
Power Output
Minimum sine wave continuous average power output per
channel, all channels operating is:
200 watts into 4 ohm load
120 watts into 8 ohm load
Rated Power Band
20Hz to 20,000Hz
T otal Harmonic Distortion
Maximum T otal Harmonic Distortion at any power
level from 250 milliwatts to rated power output is:
0.005% for 4 or 8 ohm loads
Dynamic Headroom
1.6dB
Frequency Response
+0, -0.25dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz
Sensitivity
1 volt
A-Weighted Signal T o Noise Ratio
92dB (113dB below rated output)
Input Impedance
10,000 ohms
Wide Band Damping Factor
100 at 4 ohms
200 at 8 ohms
Power Requirements
100 Volts, 50/60Hz at 13.2 amps
110 Volts, 50/60Hz at 12.0 amps
120 Volts, 50/60Hz at 11.0 amps
220 Volts, 50/60Hz at 6.0 amps
230 Volts, 50/60Hz at 6.0 amps
240 Volts, 50/60Hz at 6.0 amps
Note: Refer to the rear panel of the MC206 for the
correct voltage.
Dimensions
Front Panel: 17-1/2 inches (44.45cm) wide, 7-1/8 inches
(18.10cm) high. Depth behind front mounting panel is 18
inches (45.72cm). Clearance required in front of the Front
Panel is 1 inch (2.54cm) for knobs.
Weight
57 pounds (25.9kg) net, 76 pounds (34.5kg) in shipping
carton
Intermodulation Distortion
Maximum Intermodulation Distortion if instantaneous peak output per channel does not exceed
twice the rated output, for any combination of
frequencies from 20Hz to 20,000Hz, with all
channels operating is:
0.005% for 4 or 8 ohm loads
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 conditions:
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).
NO TES
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 recommended by the manufacturer.
2
REAR PANEL
MC206
SECTION LOCATIONS
TOP VIEW WITH COVER REMOVED
3
BLOCK DIAGRAM
4
INTERCONNECT
MC206
5 6
87
Loading...