I live in Lexington, KY...home of Thiel audio, who has also started using metal woofers. Metal cones generally have intense resonance peaks centered around 5kHz, even from highly respected driver manufacturers such as Seas. These peaks can be very hard to tame, even with complex crossovers. Plus metal cones can sometimes add a 'hard' sonic signature to music. Has anyone noticed a metallic hardness to the Axiom sound?