Monday, February 23, 2015

MCINTOSH MC2000 CIRCUIT

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.
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
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).
4. On PC Board Drawings, Square Pad Indicates:
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