Re. the math problem you cited, yes, I did get those values.
So? The amps I'm thinking of are capable of generating these kinds of wattages & sounding musical at the same time. Indeed that's what I was thinking in the 1st place when I wrote that post.....
I may have misunderstood, but I think Ralph's point is that a 9 to 1 ratio of power into a load based on its impedance vs. frequency characteristics would likely result in significant frequency variation driven from this amp. He earlier mentioned the higher impedance in the bass and lower impedance in the treble for ESL's and the bass weak and bright sound of SS amps driving them. I am "inferring" what he meant and bring no real expertise to this discussion; however, I am enjoying the discussion and thank all contributors for keeping it going.