I'm prototyping a GSG variant with a SRPP driver. Since heating the driver tube with the same winding as one of the OT's heater (as suggested in the GSG schematic) would exceed the driver tube's heater-cathode max potential (for the top triode in the SRPP), I need to use a separate heater winding for the driver tubes.
I only have 2 6.3v windings on my power xformer. But they are beefy (3A), so I'm considering powering the heater for both OT's (6B4G) from one winding. My concern (and the point of my question), is whether I'd incur any ill effects from doing that (crosstalk, etc.)
I believe I could just parallel feed the inputs to both rectifier bridges from the same winding, or maybe even have one rectifier/smoothing/biasing circuit for both tubes (with a doubled wattage bias resistor of course).
Any suggestions would be greatly appreciated.