Numerous significant improvements have been made over the years in all the drivers, enclosures, electronics and cross-overs. Also new products like the M5HP, VP160, LFRs, Air have been introduced. The subs now are an entirely different animal. Then there's also the Family of Curves and improved quality control.

Axiom's HP drivers are cast. There are definite performance advantages of cast over stamped when a "larger" motor structure is necessary.

Also note Axiom has "beefed up" the bracing in most of its speakers. See the YouTube videos. Cross-overs have also improved.

I've been following Axiom's work closely. I don't believe any of these changes were inspired by marketing. I think when Andrew came on board Ian finally got the help he needed. The LFR and Model T projects likely catalyzed some new research that led to the changes.

When you step back and look at what Axiom has done over the last 8 years, it's actually quite amazing!