McIntosh, your experience?Made great tube amps, back when.
Then lost the way and compromised trying to make SS amps and putting output autoformers on the rear end of them, to make them "bullet proof".
Very much like using a "O" Autoformer on amps that can’t take certain loads to make them handle those loads and be compromised.
THE REAL FIX!!! Just get the right amp to start with for that speaker.