erik_squires
What I'm talking about are how simulations miss how changes to the impedance curve alters the sound, even when the simulation says it does not.
You would need to include some model of the amplifier in your simulation to possibly see this.
Also, don't know on your specific example, there may be some rational to there design choice. Some issues that were displayed during bench testing. Possibly reducing variation over component tolerances, have you tried running a Monte Carlo analysis utilizing the component tolerances?