McIntosh MC-30 Schematic

available

modifed
as

output

terminal

screw
at

4, 8, 8, 16 ohm

NOTES:

AMPLIFIER

NOS.

TO PlN

1-2

1-3

CONNECT

1-4

GND.

GND.)

AND

7-8

C.T,

6 IS

5-6 (6 IS

A-116

WATT
30

OUTPUT CONNECTIONS

4 ohm

8 ohm

16 ohm

IMPEDANCE

V.

600 ohm

70.7

BALANCED

MODEL

CONNECTIONS

INPUT

IF

PRE-AMP
OR

ADJUST GAIN CONTROL

SCREW TERMINALS

8 5.

INPUT:

(GND.)

20V.

PINS.

to

SOCKET

0.5V.

PRE-AMP SOCKET.

2 a 3 OF

PINS

JUMPER
I :

NOTE

SIGNAL EXCEEDS 0.5V.

ROLL-OFF.

SUPPLY

50-60~

8 2.

THIS SOCKET

(GND.)

USE

PINS

SOCKET

MCINTOSH PRE-AMPS.

CAIN CONTROL INOPERATIVE

PRE-AMP.

2:

INPUT:

NOTE

2.5 v.

A.C.

BASS

BASS BOOST..

NO. 2 FOR

NO. I FOR

REMOVE JUMPER

SOCKETS VIEWED FROM BOTTOM.
3:

NOTE

REMOVE JUMPER
4:

NOTE

R1

500K Pot, Level Adj.

2.2M

R2

56 K, 1W

R3

2.2K

R4

18K,

R5
R6
R7

R8
R9
R10

R11
R12

R13
R14

R15
R16
R17
R18
R19
R20
R21
R22
R23

R24
R25

R26
R27
R28
R29
R30
R31
R32
R33

1W
47K
1M

100K

2.2K

1M

100K

1K
10K

22K

1.2M

1M

12K,

2W

12K,

2W

100K

1.2K
100K

12K,

2W

12K,

2W

680K
680K

250 Ohm

470 Ohm

150

Ohm,

56K

4.4K,

47K

120K

10K

2W

Pot,

10W

Parts List for A-116A

30 Watt Power Amplifier

Hum

Adj.

.033

C1

.022

C2

.1

C3

47mmf

C4

.022

C5

.1

C6

.1

C7

.25, 600V

C8

.25, 600V

C9

40/80-20, 500/450 V.

C10

20,

C11
C12
C13

C14
CR1

L1
L2

T1
T2

V1
V2
V3
V4

V5

V6

150V

10, 450V
.0047

.1

Sel. Rect, 4 plate 20 MA.

1.5 Micro H. Choke

2.7 Micro H. Choke
U-152A Power Trans.

M-150A Output Trans.
12AX7

12BH7
12BH7
6BG6-G
6BG6-G
5U4-GA