> Perhaps "full drive" is actually overdrive?
I thought the same thing.
The problem is the load impedance presented by the
transformer is always frequency dependent. If it goes
through a peak at a certain frequency, the PA can saturate
easier. If the impedance goes through a dip at the
collectors on a certain frequency it can lose gain.
I'd try playing with a couple silver mica caps across the
transformer and see if the gain or power can't be restored
at the problem frequency.
73 Tom
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