KT61 alternatives.
Is any problem likely to arise due to the substitution of a KT61 with a KT66 in an HMV1117 radio?
In theory, I suppose the O/P Transformer matching is incorrect, for one thing, since the KT66 has different ratings/characteristics to the '61.It's anode & screen current ratings are higher for one thing.
Last edited by Darren-UK; 31st Jul 2007 at 11:50 pm.
Reason: Removed comment re italic typing.
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