My theory is that Axiom doesn't want to publish the true specs for the 350v3 because they are too close to the DSP-based subs. The 350v3 may lack frequency response linerity compared to the DSP subs but I really don't think your ears care about that so much when it comes to bass. And a hump here or there may actually be more pleasing to our human ears.
What the 350v3 lacks in linearity, it makes up with its better transient response compared to the DSP subs. Or at least it sounds to me like the transient response is better because I hear attacks and it sounds "tighter".
From all of the different subs I've heard in my 4,000 cubic foot room, the 350v3 sounds the best and is excellent value for the money.
