If well adjusted, the ring will sustain quite nicely. Optimum sound and projection are the result of the proper bridge spacing from the tail piece. This length is normally 55 mm. The assumption is that the bridge is 90 degrees to the belly and other adjustments ok. Smaller sized instruments will have proportionally smaller distances behind the bridge.
Post adjustment is critical.
Your favorite luthier can, by simple post adjustments, balance the power and sonority of the strings. He can brighten and or darken the sound, and with a variety of combinations of movements, make the instrument sound as good as it can. Sometimes a new post is indicated. The bow is as essential to the instrument as the player or the strings. The stick must be kept free of rosin build-up.