08-09-2015, 07:45 AM
Don't think Philco used any 6X5's, may have post war but pre war nah. I mostly find them in 6v car radios and Z brand sets. The 80, 5Y3, 5V4 are much heartier tubes but require a 5v filament winding on the power transformer. The 84 is an early version of the 6X5. Fortunitly it doesn't suffer from the same fail rate.
From my work bench I see those Philcos with the push/pull 41's and the 84 rectifier as a cost cutting set. From a design standpoint if Philco had used a more robust power transformer, a 5v rectifier, and a separate phase inverter they could have almost doubled the audio output and lower the distortion. Oh pardon me they did it's called a 41-300. As always everything come at a price.
Terry
From my work bench I see those Philcos with the push/pull 41's and the 84 rectifier as a cost cutting set. From a design standpoint if Philco had used a more robust power transformer, a 5v rectifier, and a separate phase inverter they could have almost doubled the audio output and lower the distortion. Oh pardon me they did it's called a 41-300. As always everything come at a price.
Terry
