I don't own any solid oak drums but I bought a set of Ludwig Keystones(maple sandwiched in oak) a while back and they are heavier than my Premier Artist Birch and Artist Maples but to my ear they do seem to be louder also. DavidI agree with Wy on them not being any louder then other drums and they do sound better w/ 2ply coated skins.
But, compared to similar sizes they were heavier then the birch and the maple. I actually found the suspended 14" floor tom to be choking the sound on the YESS system because it was so heavy. So I put floor tom legs on it and it sounded much better.