Bill (Brownsfan), was the lack of sound in one channel on that first day caused by either a short or an open in the connections between the amplifier and that speaker? If so, it is very conceivable that the poor sound in the other channel resulted from effects of that short or open on the performance of the amp.
In the case of a short, for obvious reasons. In the case of an open, running a tube amp having an output transformer, such as the Dynamo, with no load on one channel could have resulted in large voltage spikes in the output stage of that channel due to "inductive kickback" from the transformer (Google "inductive kickback" for further info), those spikes conceivably having coupled to some extent into the amplifier's circuitry for the other channel.
Best regards,
-- Al
In the case of a short, for obvious reasons. In the case of an open, running a tube amp having an output transformer, such as the Dynamo, with no load on one channel could have resulted in large voltage spikes in the output stage of that channel due to "inductive kickback" from the transformer (Google "inductive kickback" for further info), those spikes conceivably having coupled to some extent into the amplifier's circuitry for the other channel.
Best regards,
-- Al