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'load lines for dissimilar output tubes?'
Author:CChurchill (registered user: 163 posts )
Date: Fri, Mar 17th, 2017 @ 19:51 ( . )

: Yes, I think there could be various changes in slope in the load lines, as different tubes go into cut off or grid clamping (including those on the 'other side' of the push-pull).
: Biasing the 6V6 and 6L6 independently might give some control over this.
: It's tricky, but I think whichever of the tubes grid clamps first, might also clamp the grid signal to the other, depending on the design of the input circuits to the grids.

Yes! you make an interesting point. I suppose if you used a common coupling capacitor feeding both of the grids, once the cap begins to charge from the 6V6 clamping, It would begin to shift the bias closer class B...
...no, wait a minute. Let me think about this for a second. ;)
I'm not sure that scenario would clamp the 6L6 at all. I guess the first thing you have to figure out, is the bias configuration for this stage. Because no matter how you couple the output tubes, the effect will probably be heavily dependent upon each other. I want to think about this more. Look forward to hearing your thoughts . Though

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