What Paul said^^^^ People will tell you its your pre-amp, soundpost, EQ, Set up...Bla! Bla!.. but playing with a loud drummer and guitarist on small stages will always become a problem for Upright Bass, F-hole covers help a lot. Make your own. I used a masking tape template over F-holes, pencil rub the outline, cut the outline and stick it to some gardeners Foam Kneeling Pads. then using a scroll saw cut out the outline. Cheap and it works.