08-10-2014, 07:37 PM
Well, the post WW11 sets used up whatever tubes available at the right price, so if they came up with 106 string for a 115 or whatever fr a few thousand sets, a dropping resistor could be used. 80 ohms would be just right. A 100 ohm resistor wouldn't be bad considering today's higher average supply. If the tube lineup is so, a 10 watter would be fine, dress it against the chassis to dissipate heat. But --- any reason why original failed?