Keith Dysart wrote:
But then why not take the opportunity to learn?
Instead of arguing from a point which you now
claim was ignorance.

Sorry, I didn't do that. My only point was that
one could indeed track the energy in the amplifier
if one understand where the destructive interference
is vs where the constructive interference is. Every-
thing I said is based on the conservation of energy,
not on the design of the amplifier.
--
73, Cecil http://www.w5dxp.com