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In the Forum: Melquiades Amplifier
In the Thread: Building Melquiades: Chronicle of full-range
Post Subject: Compromise for new Melq overvoltagePosted by AnonymousUser on: 7/8/2006
Romy,
I hate it when I realise I need a different transformer...
The following is not an ideal solution because it breaks one of the Melquiades design features, but may be worth trying - cathode bias on the output stage? You could burn up some volts there... if not enough,
flip the bias R17 to the positive bias supply, and have a combination of, say +20V at the grid and 60V dropped in the cathode resistor.
Not sure if it would be an issue to fit the cathode resistor and bypass cap in the chassis - heat and size issues...
Given what the cathode biasing will do to the sound, you may just need a new transformer :-(
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