radiotron,
If you are using 2 stages, a driver tube and an output tube, there might be a very slight partial cancellation of the 2nd harmonic distortion.
That is because the direction of the 2nd harmonic distortion of the 2 stages is in opposite phase (serial stages' cancellation).
But almost any driver that only has to put out 26V peak to peak (-13V to +13V), the drivers 2nd harmonic distortion should be much lower than the output stages 2nd harmonic distortion.
That means there is almost no 2nd harmonic distortion cancellation, it is almost all from the output stage.
Just what so many fans of SE want. Good!
And if the driver has lots of headroom, the amplifier's 3rd harmonic distortion should be very low (typically 15dB less than the 2nd harmonic distortion).
Just make sure that when the 6V6 is driven hard enough that it draws grid current (A2), that the driver impedance can drive it linearly,
and that there is no bias shift on the output tube (such as will occur if Either there is RC coupling between the driver and output tube, Or
if the output tube has a self bias resistor and bypass capacitor).
Have Fun Listening!
If you are using 2 stages, a driver tube and an output tube, there might be a very slight partial cancellation of the 2nd harmonic distortion.
That is because the direction of the 2nd harmonic distortion of the 2 stages is in opposite phase (serial stages' cancellation).
But almost any driver that only has to put out 26V peak to peak (-13V to +13V), the drivers 2nd harmonic distortion should be much lower than the output stages 2nd harmonic distortion.
That means there is almost no 2nd harmonic distortion cancellation, it is almost all from the output stage.
Just what so many fans of SE want. Good!
And if the driver has lots of headroom, the amplifier's 3rd harmonic distortion should be very low (typically 15dB less than the 2nd harmonic distortion).
Just make sure that when the 6V6 is driven hard enough that it draws grid current (A2), that the driver impedance can drive it linearly,
and that there is no bias shift on the output tube (such as will occur if Either there is RC coupling between the driver and output tube, Or
if the output tube has a self bias resistor and bypass capacitor).
Have Fun Listening!
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