The differences between Orion and Lyra result in a slightly different sound but they are more alike than different. The Lyras cabinet is slightly quieter which yields slightly better resolution. Not night and day. The Lyra is taller so it presents a taller soundstage. The Lyras cabinet has a larger volume and it has more driver surface area so it plays a little “bigger”. The Orions tweeter and midrange are larger and play lower than the smaller Lyra drivers. The crossovers are set lower so this changes the sound some. Each is optimized for its drivers and cabinet. The biggest obvious differences are the dual 6 inch mids vs a single 7 and dual 10s vs single 13. The dual 6s give more midrange presence. The Orions 13 inch woofer is a thing of beauty. I love it. I personally prefer it to the 2 10s. My hope is that when Rockport makes its next statement speaker it has multiple 13s.