[Patrick]

I always power up radios with a dim bulb tester on my variac. I have noticed that with certain high tube count radios, that the 100W bulb will glow dimly. But with the 16, the bulb only glows dimly up to around 90 volts. The radio does play. When I increase the voltage to 120, the volume, naturally, increases, but the bulb gets really bright.


Doesn't the wattage output of the radio determine how bright the bulb gets? If that's true, then is the wattage output of the 16 high enough to cause the bulb to glow bright, or do I have another problem?