09-13-2012, 12:43 PM
I have just finished adjusting my 80jr, and some time before I finished the 20, console version.
Both do not sound comparable to my Zenith 9s262.
I can hear distortion.
Both sound very similar (distortion-wise).
All the radios have been fully recapped (and I mean - fully), and re-resistorized.
All the tubes have been verified and are good-to-excellent.
80jr has A-class output whereas 20 has push-pull type.
20 has the speaker re-coned whereas 80jr has the original speaker which looks like new and does not have any damage (visible) whatsoever.
80jr has the original output xfmr.
20 has the replacement one (I think 125 C or D, a universal push-pull).
So, considering the quality is somewhat acceptable, but not stellar by any measure, is this something that maybe I should be expecting or is there room for improvement?
I can definitely put a sound signal in and watch the scope picture and see if it is distorted too much, but I have to get me a compact sound generator first.
But I'd like to understand if this is warranted or maybe I am trying to chase something that's mot there.
Both do not sound comparable to my Zenith 9s262.
I can hear distortion.
Both sound very similar (distortion-wise).
All the radios have been fully recapped (and I mean - fully), and re-resistorized.
All the tubes have been verified and are good-to-excellent.
80jr has A-class output whereas 20 has push-pull type.
20 has the speaker re-coned whereas 80jr has the original speaker which looks like new and does not have any damage (visible) whatsoever.
80jr has the original output xfmr.
20 has the replacement one (I think 125 C or D, a universal push-pull).
So, considering the quality is somewhat acceptable, but not stellar by any measure, is this something that maybe I should be expecting or is there room for improvement?
I can definitely put a sound signal in and watch the scope picture and see if it is distorted too much, but I have to get me a compact sound generator first.
But I'd like to understand if this is warranted or maybe I am trying to chase something that's mot there.
