In Reply to: RE: I think you're right. posted by dave slagle on July 31, 2020 at 16:35:25:
What I have actually done is to construct a dummy load for a Beveridge direct-drive amplifier that mimics a Beveridge speaker panel. I measured the speaker, and it is purely capacitative, with 3nF between each stator and the screen, and therefore 1.5nF across from one stator to the other. I connected two 3nF/4kV caps in series with the junction connected to the screen and each free end connected to one stator or the other. (The caps are installed in a well insulated box, and the flying leads are 20kV insulated wires with HV banana plug terminations.) The amplifier puts 3200VDC on one stator and -3200VDC on the other. I am guessing the outer foils of the capacitors on both sides should be connected to the screen, which is held at zero VDC and very low impedance, per Beveridge's unusual concept.
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- Thanks, guys! - Lew 08/6/2008:24:59 08/6/20 (0)