Charles,
What I have seen/heard to date with sets is consistent with your assessment and I would tend to agree.
Rock music is meant to be played/heard loud but some may not care for that so it is not an issue then.
Of course peaks on orchestral and even big band jazz recordings for example can get pretty loud, but from what I have heard, SET power may not be as big an issue there for most.
I have heard some orchestral recordings with convincing dynamics on at least one very high efficiency horn system using what I recall to be fairly low powered (but very expensive) Audio Note tube amps (not sure if these were SET or not though).
What I have seen/heard to date with sets is consistent with your assessment and I would tend to agree.
Rock music is meant to be played/heard loud but some may not care for that so it is not an issue then.
Of course peaks on orchestral and even big band jazz recordings for example can get pretty loud, but from what I have heard, SET power may not be as big an issue there for most.
I have heard some orchestral recordings with convincing dynamics on at least one very high efficiency horn system using what I recall to be fairly low powered (but very expensive) Audio Note tube amps (not sure if these were SET or not though).