Ok here is the (misprint 8) 4ohm tap (gray) into the easy NHT simulated load, the Wilson will be significantly worse, probably double as bad. Especially around 100hz where the 7’s are 2ohm and -40 negative phase angle, which could equate to a EPDR of nearly 1ohm!!!! as seen by the amp.
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If you like the sound not flat in frequency response, then good for you Al, I know you like your tubes, but the line has to be drawn somewhere between what your hear is the a flat FR, or one that’s very contoured the, 275 will be different in sound with all hard to drive speakers, such as the 7’s ect.
https://www.stereophile.com/images/archivesart/1010Macfig02.jpg
Cheers George
.
If you like the sound not flat in frequency response, then good for you Al, I know you like your tubes, but the line has to be drawn somewhere between what your hear is the a flat FR, or one that’s very contoured the, 275 will be different in sound with all hard to drive speakers, such as the 7’s ect.
https://www.stereophile.com/images/archivesart/1010Macfig02.jpg
Cheers George