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VOLTAGE AND
RESISTANCE CHART
TUBE
PIN#
OPERATING VOLTS
OPERATING VOLTS
SIGNAL VOLTS
OHMS
AT NO SIGNAL
AT 14W OUT
(1 kc) at 30W OUT
UN IT DISCONNECTED
(DC UNLESS NOTED)
(DC UNLESS NOTED)
FROM POWER)
CC83(12AX7
290KO
014
IMO
7KO
4&5
filament (OVDC; 6. 3VAC to pin 9)
500
290KO
0035
90KO
2KO
filament
500
ECC83/12AX7
290KO
IMO
7KO
4&5
filament (OVDC; 6. 3VAC to pin 9)
500
290KO
90KO
2KO
fi lament
500
ECC82/12AU7
1. 2
120KO
V3, V4
61OKO
. 1
3KO
4&5
filament (OVDC; 6.
3VAC to pin 9)
500
170KO
190KO
1. 8
1. 75
065
8KO
filament
500
ECC83/12AX7
195
190
100KO
V5, V6
470KO
100KO
4&5
filament (OVDC; 6. 3VAC to pin 9)
500
470KO
1. 15
250KO
1. 1
7KO
filament
500
EL84(6BQ5
340KO
,1,
340KO
12.
14.
1650
4&5
filament (OVDC; 6. 3V AC between pins 4 & 5)
500
330KO
335
325
180
165 1900
330KO
330
320
3500
EL84(6BQ5
340KO
340KO
12.
14.
03*
1650
4&5
filament (OVDC; 6. 3V AC between pins 4 & 5)
500
6 2
330KO
-,7
335
325
180
330KO
330
320
3500
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Troubleshooting
