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My very first concern with that set would be the integrity of the plastic/(nylon?) coil form of the H efficiency coil, which tends to crystalize over time and fall apart. If that happens, the requisite 'dip' in cathode current of the H output tube is lost, allowing the current to soar 'waay over spec.
Last edited by old_coot88; 01-23-2015 at 02:04 PM.
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