08-12-2011, 03:50 PM
A quick wander around the 'Net shows that others have been thinking along the same lines.
My thoughts: I cannot see a reason as to why the idea isn't worth a serious try. Depending on the configuration, single-ended or class B push-pull, automatic or fixed bias, you might have to do a bit of tweaking of the control grid bias and possibly O/P matching, but I'd be surprised if these were critical issues. With all valve power amps., the really important factor is the dynamic linearity of the Ia / Vg characteristic of the O/P valves, the quality of the O/P transformer and of course, if class B push-pull, valve characteristic matching.
Give it a whizz - and let us know how you get on - thanks.
Al.
My thoughts: I cannot see a reason as to why the idea isn't worth a serious try. Depending on the configuration, single-ended or class B push-pull, automatic or fixed bias, you might have to do a bit of tweaking of the control grid bias and possibly O/P matching, but I'd be surprised if these were critical issues. With all valve power amps., the really important factor is the dynamic linearity of the Ia / Vg characteristic of the O/P valves, the quality of the O/P transformer and of course, if class B push-pull, valve characteristic matching.
Give it a whizz - and let us know how you get on - thanks.
Al.
