12AU7a for stage 2 is the ticket. changed the resistors a bit, strapped the OPT for 600 to compensate for the reduced gain, took out the 1 MA pot and stuck in a 250 KA with a 270 K underneath for a a 50% to 100% vol control. (the 12AU7a likes a smaller grid resistor)
the use of different resistors for plate and cathode on the 2nd stage follower results in smooth clipping on top and bottom.
freq response is 20 -20 KC , output 1 to 2 volts p-p with a 100 mv p-p input signal.
messed up schemo and waveform at clipping level (1.2 v p-p input)
the use of different resistors for plate and cathode on the 2nd stage follower results in smooth clipping on top and bottom.
freq response is 20 -20 KC , output 1 to 2 volts p-p with a 100 mv p-p input signal.
messed up schemo and waveform at clipping level (1.2 v p-p input)
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