by jorge » Wed Oct 05, 2011 6:19 pm
If the wood shell cracks, it was too out of round. Seriously, an out of round drum may have a different sound, but can be fine if you are careful when tuning it not to make it more out of round and crack it. I actually like the sound of some of them better than some geometrically perfect circular heads. On a quinto, it may have less sustain and more overtones, and give a dryer, shorter, faster tone. I haven't listened carefully enough to hear how the out-of-roundness affects the slaps, and have not really listened to out of round congas larger than a quinto.