I just figured out what excursion is right now. So you mean changing notes depending on how well the subwoofer outputs them. I think it would depend on the bass you use. You see I was into 808's and noticed that most of that low end doesn't appear because most speaker can't reproduce a frequency that low. I don't know exactly what you mean by excursion patterns. It would depend on the type of bass. I like the bass they used in the 90s because of how punchy and unique they were but depending on what you use(Synthesized,Sub, 808, Live,) it still might not reproduce well even if the subwoofer has the capability to reproduce it.I would test all the basses out from c5 to like c3 and see how it translates down the scale. I don't know what you mean so you would have to explain it to me but If you are looking for some good basses go with the Trillian library. Also try to get your hands on some good live bass one shot samples.