Bush Dac 90 Capacitive Dropper

[Aerodyne]

I've never seen or even thought of using a capacitive dropper for anything other than the heater chain supply, which after all is the main function of a dropper (ballast) resistor in most AC/DC sets. Along with a capacitive dropper for the heaters, a fixed resistor in the HT line or before the input to the rectifier is probably the simplest to lower the HT rail voltage, if essential in a set designed for 110V operation.
Tony