I was at the warehouse getting a couple of drum kits prepped for an upcoming tour. It was quiet and no one was around so I decided to play for a few minutes. First I played a DW kit with clear 2 ply over clear 1 ply toms. Then I played a Yamaha Maple Custom Absolute again with 2 ply clear over single ply clear. That is a killer kick drum by the way. Then I pulled out an early-mid 70's B/O Ludwig kit with 3ply + re-ring clear interiors. Coated 2 ply over coated single ply. I played the 13" tom and there was that really warm vintage tone. I was stoked! I had a '65 Jazz Festival that for all the world sounded like a 402. It was killer. I started playing (or attempting to play) "Fool in the Rain" as that is what the kit sounded like it wanted to play. Then I noticed a problem. I felt like I had to beat the living daylights out of that kit including the kick to keep up with the snare. It wore me out. Thinking that maybe this was a coated vs. clear issue so I pulled out a Spaun kit that was 2 ply over 1 ply - both coated. They were loud as well.
Obviously this was not a truly scientific approach as I would probably need a hundred or so kits of various makes and ages to compare, but I found this very interesting. I did not pull out any of my Slingy kits as they always "seemed" a little more "polite" then the Ludwig kit.
By the way, i was using the same Jazz Fest with all four kits and I was playing in a warehouse with concrete floors, and 22' steel and aluminum ceiling. Any thoughts?