Ummm... yeah it is... "warmer". Please DO take note of the quotes on either side of the word "warmer" in my original post however... because, I was comparing Rogers COB shells to Rogers steel shells.
I do in fact own/play all the Rogers snare drums of which I speak, although I do have my personal favorite, but that being said: By "warmer", I was simply stating that the steel vs. COB shell is in fact "warmer" in reflectivity and sounds, how shall I say, not as bright. Rogers COB shells are pretty thin, ESPECIALLY the earlier Dynasonics, specifically the 7 line models, of which I have two... a 1964 and a 1965... plus they're brass! The COB Dynasonic with it's thin COB shell set up with the same heads as a Rogers SuperTen, and played/compared side by side, sounds much BRIGHTER then the steel shelled SuperTen, the SuperTen sounding a bit duller if you will... hence... "warmer". That was just the word I chose to describe the difference between the two, and make no mistake... there is a difference. So!...
If the word "warmer" was confusing to you, and I don't mean that in a derogatory way at all... feel free to substitute an adjective of your choice, as the auditory results between Rogers COB and steel shells will remain quite... unchanged... at least with my personal comparisons anyway. YOUR mileage may vary!
Tommyp