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I'm kind of interested in building an Orange amp. Does anyone have any experience with this. Advice, concerns, etc?
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Here's a good link to a page from this guy's Orange site:
My Orange Diy page
My only recommendations would be to add a large grid-stop to the grid of the cathodyne phase inverter (100k-1M) to prevent frequency doubling (see: The Valve Wizard), and reduce the coupling caps going to the power tubes. My OR80 had horrible blocking distortion with the FAC control - which switches different coupling caps in the preamp - to any setting but the smallest.
Also, I would copy the layout exactly, which has the OT at the preamp side of the chassis and the laminations on the same plane as the PT. Mine has magnetic coupling between them because of this. Hummmmmmmm
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EDIT: wouldn'tAlso, I would copy the layout exactlyComment
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