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McIntosh MC302 Service Manual

McIntosh MC302
36 pages
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MC302
MAIN 751291 SCH 1 OF 3
2
9 10
J4
J5
2 6
8
4
1
3
5
7
PRIMARY
T1
3300pF
C1
J3:1
J3:2
[+]
.3A
t
R1
D3
D4
D2
D5
1
1
1
BLU
GRN
BLU
1.1A
t
R3
.047µF
C2
3300µF
C6
100µF
C13
3300µF
C7
+15V
J18
J19
J20
1.1A
t
R4
-15V
27.4K
R10
27.4K
R13
1.21K
R8
100µF
C12
HS4
27.4K
R7
82.5K
R12
HS3
221K
R11
.01µF
C9
D6
D7
D8
D9
1
ORN
J16
1
ORN
J17
PWR RLY
.3V
.3V
5V
+5V
AC DETECTOR
0V
4
2
1
3
B+
GND
5
U1
+5V
3
1
2
Q2
3
1
2
Q1
100K
R2
150K
R5
.1µF
C3
AC DET
1
1
AC N
AC F
RT2
J8
J6
J13
J11
J12
J7
J15
J14
J10
J9
A
B
C
D
E
G
H
I
J
F
BLU
GRN
BLU
ORN
ORN
W HT
BLK
D1
TEST ONLY
NO CONNECTION
APPLY 12VDC
TO ENERGIZE RELAYS
W ITH NO AC POWER
3300µF
C4
100µF
C11
+5V
47.5K
R6
IN
ON/OFF
OUT
GND
ADJ
___
TAB
1
6
2
3
4 5
U2
HS2
150K
R9
.01µF
C8
IN
ON/OFF
OUT
GND ADJ
___
TAB
1
6
2
3
4
5
U4
IN
ON/OFF
OUT
GND
ADJ
___
TAB
1
6
2
3
4 5
U3
1
1
1
1
1
1
1
1
1
1
RT1
2
1
3
4
K1
2
1
3
4
K2
J1:1
J1:4
J1:7
J1:10
J2:1
J2:4
J2:10
+5V
.1µF
C5
[-]
.1µF
C10
12V
12V .3V
-20V
20V
REFER TO
CONVERSION
CHART FOR
PROPER PRIMARY
CONNECTIONS
1
1
1
1
1
1
REFER TO
CONVERSION
CHART FOR
PROPER JUMPER
LOCATION
5V
0V
1.2V
15V
0V
1.2V
-15V
-1.2V
0V

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McIntosh MC302 Specifications

General IconGeneral
Damping factor40
Amplifier class-
Frequency range10 - 100000 Hz
RMS rated power600 W
Audio output channels2.0 channels
Peak power per channel300 W
Signal-to-Noise Ratio (SNR)122 dB
Total Harmonic Distortion (THD)0.005 %
XLR inYes
Speakers connectivity typeBinding post
Product colorBlack
Connectivity technologyWired
Maximum current6.6 A
AC input voltage110 V
AC input frequency50 - 60 Hz
Weight and Dimensions IconWeight and Dimensions
Depth558.8 mm
Width444.5 mm
Height239.7 mm
Weight44450 g

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