[Tube Radio]

There is a resistor that supplies voltage to the tweeter. Remove that resistor (should be on terminal strip IIRC connected between one of the terminals that the tweeter connects to and B+) and DC bias goes away. Radio Shack sold a few years back a horn tweeter silver in color that was high impedance. I forgot the impedance value as I no longer have the tweeter, but it did work. You could also get another transformer and connect it to where the electrostatic tweeter connected and be able to use a normal tweeter. I've tried connecting a tweeter across the woofer and IIRC it didn't work very good. IMHO for the amount of available bass boost you would think that they would have either used a tube with greater output power or push-pull audio as the radio runs out of headroom pretty quick when playing most modern music. I wonder how hard it would be to convert one of those radios for use just as a tuner usiung a transformer of course?