Correct Whitney. Otherwise you get a solid baffle and alter the balance at the extremes quite a bit. This is a good area to play with for those willing compromise SS to shift treble to bass.
@hans
You mean in front of the black mesh in the back? I take it you don't mean the Creatology foam then. The liner isn't to supplement the foam, it's meant to deal w/ the surface of the stainless steel mesh.
Basically the baffle is the cup. Think of the HD800 as basically a revised K1000. It's essentially an angled 56mm driver suspended in near free air. Middle is the driver deconstructed. The top shows how the driver assembly is positioned under the black screen and supported/suspended by the
leona (ironically a Japanese plastic) frame and stainless mesh. Below is the HD650 driver next to the HD800.
I think any further macro tuning is going to require a Dremel.