01-18-2022, 03:07 PM
The 14A7 should work fine. Its actually a better choice if you don't mind that it is not factory original.
The extra 6 volt drop across the 14A7 filament will be compensated for by today's higher AC line voltages. 115 V was the norm back then, so with 120 V AC you will be just about right on spec.
The extra 6 volt drop across the 14A7 filament will be compensated for by today's higher AC line voltages. 115 V was the norm back then, so with 120 V AC you will be just about right on spec.