MCINTOSH MC2000
CIRCUIT
Power Output
130 watts into 8, 4 or 2 ohm loads is the minimum sine wave continuous average power output per channel from 20Hz to 20,000Hz with both channels operating.
130 watts into 8, 4 or 2 ohm loads is the minimum sine wave continuous average power output per channel from 20Hz to 20,000Hz with both channels operating.
Power Requirement
100 Volts, 50/60Hz at 5.8 Amps
120 Volts, 50/60Hz at 4.8 Amps
230 Volts, 50/60Hz at 2.5 Amps
100 Volts, 50/60Hz at 5.8 Amps
120 Volts, 50/60Hz at 4.8 Amps
230 Volts, 50/60Hz at 2.5 Amps
ABOUT SCHEMATIC
. The heavy lines on the schematics 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 (10megaohm) voltmeter must be used.
3. Unless otherwise specified:
a. Resistors values are in ohms.
b. Capacitor values are in microfarads (uF).
c. Inductor values are in microhenries (uH).
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 (10megaohm) voltmeter must be used.
3. Unless otherwise specified:
a. Resistors values are in ohms.
b. Capacitor values are in microfarads (uF).
c. Inductor values are in microhenries (uH).
4. On PC Board Drawings, Square Pad Indicates:
a. Polarized Capacitors - Positive
b. Diode - Cathode
c. Others - Pin 1
a. Polarized Capacitors - Positive
b. Diode - Cathode
c. Others - Pin 1
POWER AMP CIRCUIT
VU METER CIRCUIT
CLICK O THE IMAGES TO ZOOM IN
VU METER COMPONENT LIST
ZENERDIODE 6.2V 5% 500MW D12
DIODERECTIFIERD2 D11
FUSE 2ASLO-BLO 5 X 20 250VIEC F1
MALECONN 3 POS RT ANGLEJ2-
MALECONN 6 PIN RT ANGLEJ1-
4 PIN RT.ANGLEJ3-
TRIAC8A 200VQ8
TRANSISTOR NPN MPS4124 2K/REEL Q1 Q5
TRANSISTOR PNPQ2 Q6
TRANSISTOR P.CHANNEL JUNC.FET Q7
TRANSISTOR NPNQ3 Q4
ICREGULATOR -12VIC2
ICREGULATOR 12VIC1
DUALOPERATIONAL AMPLIFIER IC3 IC4
TRIM POT100K OHM 20%R10
RES CF3.3K 5% 1/4WR23
RES CF2.7M 5% 1/4WR1
RES CF10 5% 1/4WR26
CARB FILMRES 680 OHMS 5% 1/2W R24
RES MF10K 1% 1/4WR7 R20 R22
RESMF10K 1% 1/4WR7 R22
MF 499 OHMSR17
METALFILM RES 1K 1% 1/4WR19 R25
16.5K 1% 1/4WR18
METALFILM RES 200K 1% 1/4W R6 R12
METALFILM RES 150K 2% 1/4W R9
METALFILM RES 22.1K 1% 1/4W R21
METALFILM RES 100 OHM 1% 1/4W R11 R16
METALFILM RES 10M 1% 1/4W R8
METALFILM RES 1M 1/4WR2
METALFILM RES 2.74M OHM 1/4WR13
MF RES3.92K 1% 1/4WR15
MF RES15K 1% 1/4WR5 R14
MF RES13.7K 1% 1/4WR20
DIODERECTIFIERD2 D11
FUSE 2ASLO-BLO 5 X 20 250VIEC F1
MALECONN 3 POS RT ANGLEJ2-
MALECONN 6 PIN RT ANGLEJ1-
4 PIN RT.ANGLEJ3-
TRIAC8A 200VQ8
TRANSISTOR NPN MPS4124 2K/REEL Q1 Q5
TRANSISTOR PNPQ2 Q6
TRANSISTOR P.CHANNEL JUNC.FET Q7
TRANSISTOR NPNQ3 Q4
ICREGULATOR -12VIC2
ICREGULATOR 12VIC1
DUALOPERATIONAL AMPLIFIER IC3 IC4
TRIM POT100K OHM 20%R10
RES CF3.3K 5% 1/4WR23
RES CF2.7M 5% 1/4WR1
RES CF10 5% 1/4WR26
CARB FILMRES 680 OHMS 5% 1/2W R24
RES MF10K 1% 1/4WR7 R20 R22
RESMF10K 1% 1/4WR7 R22
MF 499 OHMSR17
METALFILM RES 1K 1% 1/4WR19 R25
16.5K 1% 1/4WR18
METALFILM RES 200K 1% 1/4W R6 R12
METALFILM RES 150K 2% 1/4W R9
METALFILM RES 22.1K 1% 1/4W R21
METALFILM RES 100 OHM 1% 1/4W R11 R16
METALFILM RES 10M 1% 1/4W R8
METALFILM RES 1M 1/4WR2
METALFILM RES 2.74M OHM 1/4WR13
MF RES3.92K 1% 1/4WR15
MF RES15K 1% 1/4WR5 R14
MF RES13.7K 1% 1/4WR20
