McIntosh MC302 Service Manual

MC302
29 30
RIGHT INPUT 751225 SCH
6
10
R20
10
R21
2
2
MAIN
J5:1
4
2
3
1
S
-
+
G
J1
10µF
C3
21
3
G
D
S
Q1
R PG
PC IN
100
R17
V +
V -
Vocm
ENA
1
7
2
8
5
4
3
6
9
HT SNK
U2
2.21k
R13
2.21k
R14
1.65k
R9
1.65k
R7
+14V
-14V
J5:2
J5:3
J5:4
J5:5
J5:6
+15V
-15V
PC IN
MODE
GND
ML REM
GND
J5:7
2
2
2
2
2
7
7
GND
HEATSINKR
R PG
7
PG ATT
22.1
R12
22.1
R11
7
4
5
6
2
1
3
S1
1k
R6
47pF
C8
1k
R5
100pF
C7
1k
R3
100pF
C4
475
R10
D1
UNBAL
BAL
INPUT MODE
22.1k
R1
10µF
C2
2
3
1
84
B+
B-
U1:1
+14V
-14V
100pF
C5
R INPUTS
J4:5
2
5
1
J3
MODE
ML REM
PC IN
PGND
+15V
-15V
R + INP
J4:3
J4:4
J4:1
7
FB COM
R
R (+)
INP
R
100pF
C6
1k
R4
22.1k
R2
3 1
2 4
K1
2.21M
R8
6
5
7
U1:2
3 1
2 4
K2
2.21k
R16
2.21k
R18
2.21k
R15
2.21k
R19
2
3
1
84
B+
B-
U3:1
+14V
-14V
-14V
6
5
7
U3:2
220uF
C10
.1µF
C11
.1µF
C9
+14V
-14V
220uF
C12
GP1
J2:6
J2:7
J2:8
J2:9
J2:10
J2:11
J2:12
J2:1
J2:2
J2:3
J2:4
GND
5
5
5
0V
0V
0V
-12V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V

McIntosh MC302 Specifications

General

Damping factor	40
Amplifier class	-
Frequency range	10 - 100000 Hz
RMS rated power	600 W
Audio output channels	2.0 channels
Peak power per channel	300 W
Signal-to-Noise Ratio (SNR)	122 dB
Total Harmonic Distortion (THD)	0.005 %
XLR in	Yes
Speakers connectivity type	Binding post
Product color	Black
Connectivity technology	Wired
Maximum current	6.6 A
AC input voltage	110 V
AC input frequency	50 - 60 Hz

Weight and Dimensions

Depth	558.8 mm
Width	444.5 mm
Height	239.7 mm
Weight	44450 g