Vandersteens on active speakers and room correction

The M5 amps I heard sounded really really good. I was quite shocked a speaker maker could also make a great amp.  Wish they sounded that good for $2k instead though. :)

IF you go to my Poverty Bay Sound system page, there is a sneak peak underbthe hood of the Model 7 High Pass Amplifier...

Actually it makes perfect sense and is as Richard says “ an unfair advantage “ for a speaker designer to build an optimized amp for the load AND back EMF. The architecture and hyper innovation is Richards, the detail design is the partnership in genius he has with Dick Klidnfelter of PSE fame.

high pass , the power factor corrected feed forward sub amp takes load off.
just five parts in signal path
no emitter resistors
liquid radiator cooling for stable temp and no thermal bias drift
tube front end, SS driving load
no global feedback
analogbtemp control circuit no microprocessor hash...
built in hanging truss HRS isolation
silver Audioquest speaker wire with 128 v DBS included... 

I have my unpacking, setup, breakin and long term listening notes from 1k hours of use... maybe this thread will get me to clean those up :-)

Regarding Mr. Vandersteen's views on "digital filter networks" (for active configuration) compared to discretely equipped passive filters in the higher-end realm - views which, fundamentally, I don't agree with - I find below linked video a more even-handed take on the pros and cons of active (also digitally filtered) vs. passive overall:

https://youtu.be/7Z_UPvXr4pA

Where room correction goes I'm more divided. DRC Designer made some improvements in my previous (passive) main speaker set-up, but not without some artifacts in the shape of mild ringing/ghosting. 

I have to say that when it comes to convenience, automatic room correction is super hard to beat, especially in configuring a subwoofer.