over or undershoot is not appropriate for speakers... you can't overshoot a sinwave input, you can play it louder (higher acceleration due to higher sensitivity or power) or softer (opposite) or you can have a distorted waveform from non-linearity (many kinds of that that range from suspension, BL, etc.) Note: inductance is NOT distortion, but we can have non-linear inductors which invoke distortion - very difference concept. Keep in mind, any time you put a low pass crossover on your sub, you're adding the same thing an inductor does. Generally the inductance of a speaker motor is not that linear and we really want to eliminate it from the network or minimize it or avoid frequencies that is affects for that reason.