i have been watching some of the 10 ball matches on utube and notice that with almost every player their cue has a different sound when the cue strikes the CB.....from the sound of a "thump" to a more of a "crack". is it the different tips they use, the cue itself or a combination? i have a predator with a moori medium and when i make a smooth stroke, the sound is more on the low end of tones. 