Originally Posted by IDDrummer
I think the ink rings reduce some of the frequencies associated with attack.
CLARIFICATION - what I meant by "dampening" is something that reduces the sustain of the head, ie zero rings, lots of tape, pillows, etc. The ink rings on EC2 SST heads don't really seem to do that much - they just change the frequency characteristics of the head. I BELIEVE that is exactly what they are intended to do.
First I just want to say that my correction of your idea of attack was not to make you look incompetent at all. Just that the rule of thumb has always been the sound of the drum stick hitting the head is all and figured maybe you may have the wrong idea of what attack represents. In the end we all have our definitions for these things LOL! :)
As for the ring. That's an interesting theory. That sharp sound of the stick hitting very thick mylar could play a role in overtones so it may help with that along with the overtones from having more sustain from a thicker head. Also yes I believe the ring helps to focus the tone of the drum no matter the tuning range.