JV:
The ebony is a subtle difference in the fundamental of the note. What we usually hear as 'bass', which you'll recognize instantly dialing up the deep end for dub reggae tone is that range around 100-200hz, where it gets thick mighty quick. If you think about those frequencies, and remember that open E is around 43hz and open B around 37 if memory serves me correctly, you see these are actually first and second octave range (those numbers doubled and tripled), not actually the bottoms of the note.
Of course the octave overtones repeating and doubling up the scale give the sound we're used to hearing.
The ebony, coupled with that mostly maple construction, will let you hear those fundamentals if you know where to listen. This happens on my Elan: No ebony, but a completely white wood (maple + ash) axe, and I notice a certain solidness or a type of penetrating bottom to open B, low C, low D, etc., I've never quite heard before.
When Will Gunn was here in Nashville, I played his monstrous coco/ebony five string, and you could feel those fundamentals through the floor.
It's not obvious, it depends on the room, the amp, your Q, a lot of things. But over time, I think you'll begin to notice a presence at the very bottom of your lowest notes, once you learn where to listen for them.
J o e y