Instruction manual
Tube
12AX7
1614
5U4
DC
Volts
DC
Volts AC Volts
Pin No.
No Signal
30Wout
SOW
out
1 440
375
98
2
-42
-41
132
3
-42
-42
132
4&5
Filament (6.3V AC to pin 9)
6
440
375
98
7
-42
-41 132
8
-42
-42
132
9
Filament
1
-G-
-G-
-f}-
2
Filament (6.3V AC to pin
7)
3
440 375
98
4
440
375
98
5
-42
-42
132
6
7
Filament
8
.8
5.5
98
1
2
Filament 460 410
8.8 (ripple)
3
4
370
5
6
370
7
8
Filament (5.0V AC to pin
2)
U.
S.
Patents No. 2,477,074; 2,545,788; 2,646,467; 2,654,058 others pending
McINTOSH LABORATORY, INC.
2 Chambers Street
Binghamton,
N.
Y., U.S.A.
In
Canada:
Manufactured
Under
License by
McCurdy
Radio
Industries,
Ltd.
22
Front
Street
West,
Toronto,
Canada
-5-
Resistance
Unit
Off
205*
l.lM
150K
205*
l.lM
150K
-G-
205*
205*
150K
19
0*
44
44
0*