I think our rooms are too big for those puny HP drivers.
I tried. The flanking 500s fill a big gap.
BTW Rich, I simulated the height and depth of a 600 flanking the inside of an active. I used twin M2s on top of a 500. I placed them flush with the front of the 500 and also flush with the back to simulate the depth. Then I played this tune. At a minute in, two drumsticks come in. With the simulated 600, the sticks lose air. No question about it. They become duller. To make sure I wasn't hearing things, I had my bud move them while I was listening.
What do I do now? I want 600s.
https://open.spotify.com/track/2AHaMdixIVlMfcme6Ww4Yt?si=sB-8-v4EQBy8kMLP87zejQJust look at those M2 bookshelves though. Damn! Walnut espresso. And they sound absolutely sublime even in my 4200 cu ft space from 12 feet away.