Talking about bearing edges, we must always take into account the thickness of the shell.
The important factor is the width of the contact area between the shell and the head.
Rolled edges on thin metal shells may be "sharper" than 45 degrees bearing edges on really thick staves.
you are right, so please allow me to rephrase.
The thickness of the shell, plays a huge role in the pitch and the volume of the drum.
Ceteris paribus, (meaning for same thickness, heads, tuning) all wooden drums sound- almost- the same.
Wood species have an acoustic conversion efficiency(ACE) value from 90 to 110.
Some materials have an ACE value of 1000.
Every respected sound engineer that i know, has the same opinion and its a sledgehammer!!
"Any wooden drum, if tuned the same way, sounds the same way.."
If its a carbon fiber shell, it has to be inhouse, except from "traditional" manufacturers who try from time to time, to introduce such shells.
Keller doesnt supply carbon fiber shells.
It strikes to my surprise, that it is so widely accepted that shells are outsourced from one or two global...
IMHO the most important factors of shell types and materials, such as damping factor (tan d), quality factor (Q) and acoustic conversion efficiency (ACE), are the least discussed.
I appreciate all the subjective reasoning which makes music such a wonderful experience for someone, in so many...