I would appreciate some comments on how this is possible as the author claims and how this circuit is different from others.
The designer was not forthcoming about its functioning.
http://www.audiodesignguide.com/ba/msb_aloia.jpg
The designer was not forthcoming about its functioning.
http://www.audiodesignguide.com/ba/msb_aloia.jpg
As the transformer impedance is not shown i wouldn't make any comments upon the max power. As both the anode and grid voltages are shown max power should be easy to calculate with a known load. It can't be much different than any other SE circuit using the same tube.
What else? It's parafeed and there is some cathode NFB through the speaker. Call me paranoid but i wouldn't do this to my speakers
What else? It's parafeed and there is some cathode NFB through the speaker. Call me paranoid but i wouldn't do this to my speakers
No, the grid is not driven positive in this design. I have no probs with cathode feedback and assuming that a faulty tube can fry your speakers is probably far-fetched but then again i am not into OTLs either. After all one principal advantage of transformer coupled tube amps is the galvanic isolation of the speaker.
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