Perhaps you have Audyssey set to Flat instead on just Audyssey. For movies you should use just Audyssey, it does a high frequency roll off which is better for movies. If you have selected Audyssey Flat, no roll off is provided and this is better for music. Even though I like my music to have strong highs (treble), it's not good for movie listening hence I make sure to not use Audyssey Flat.
I use the Denon (4311) Quick Select feature to handle this, I have two modes Movies and Music (Flat).
You should also turn off any equalization, bass, treble setting your gear may have. Once you calibrate with Audyssey, keep everything flat. I found Axioms produce great sound without any EQ required. All you need is Audyssey to do room acoustics compensation.
