When solid state-generated watts became cheap, speaker designers started to care less and less about the impedance of the models they were creating.Even Klipsch $20Kusd P-39f flagships at 75kg each, get harder to drive the further up the flagship ladder they go. Min 3ohms and 50'-phase angle right where the power is needed to keep the bass tight and dynamic.
https://www.stereophile.com/images/archivesart/609Klipfig1.jpg
StereophileSo to those that bag out Wilson, bag out Klipsch too for purposely making their upper range speaker too hard to drive with average amps.
" A nasty combination of 4 ohms magnitude and –50° electrical phase angle at 80Hz. The three woofers do demand a significant amount of current to keep up with the horn-loaded midrange and treble drive-units."
https://www.klipsch.com.au/products/palladium-floorstanding-speakers