I'm wondering if there are any pickups that could help generate more of a "bass guitar" sound on an upright. Let me explain. Arthritis has forced me to a smaller instrument. I'm playing a half-size upright, currently, with Fishman pickups at church. The pickup runs through an amp (which acts as a floor monitor) and then into the PA system. The PA system is very good; our sound system has 5 speaker cabinents with two twelves in each cabinet. The upright sounds bit muddy, so I'm trying to get a cleaner sound out of the instrument. Any suggestions would be appreciated. BTW, please don't suggest using a bass guitar. My arthritis is in the wrist, and, frankly, the upright is easier on the wrist than a bass guitar! Thanks, Brian