Amplifier output characteristics vs acoustic feedback in horn loaded cone drivers

[Cask05]

I'm not sure I see this as the case. The speaker has mechanical resistance but the primary action is reactive. On the other hand the voice coil impedance would primarily behave resistive. That is to say I'd expect voice coil heat to be the main damping outlet and the restorative force (transient response) acting upon the balance.

So you're thinking the inductance of the voice coils, and perhaps some capacitive effects. I would stipulate that the VC inductance would also act as a damping force. There are probably other higher order losses in the driver that Klippel has identified in his non-linear measurement procedures posted online.

Chris