First time I'm hearing of this mr. Danny Ritchie. Everything he says is correct. Orion was a continuation of the Audio Artistry line of speakers, using better drivers and thus smaller cabinet & fewer drivers for home use.
Problems:
- Cabinet vibration coupling to Mid/high driver.
- Edge diffraction
- HF scattering due to wide baffle design
- Dipole pattern up to HF aso...were known to the late SL (rip), thereof the new LX521 design were all these issues were addressed.
ASP/Multiple amp issue:
SL was a speaker designer, and thus cared less about peripheral circuitry. He firmly believed "electronics sonic signature" did not exist, only THD figures were of relevance. Just look at the nr of OP amps in the ASP...my goodness gracious.
Well, we know better.
Orion vs LX521:
"Unfortunately" soundwize - Orion is the winner. Dont ask me why. Might be due to very expensive drivers used in the Orion, or maybe fewer nr of drivers allowing fewer crossover points.