My school is doing the musical Tommy by The Who and I got picked to play bass.

There's nothing i cant handle in the actual music, but i wanted to ask some of The Who fanatics here how to get as close to his tone and technique as possible so i can be authentic.
I'm playing on a Fender Active Jazz 5-String through an Ampeg SVT 3Pro and a 4x10 cab.
How would i put my settings?
How many fingers does he use? I usually use 3, and it looks to me from footage i've seen that he does too, but i aint sure.
Does he pound the strings for his tone or is that just low action?
Are his right hand fingers just near the fingerboard or actually on it?
etc, etc...
Thanks guys.