I've always calibrated with the Radio Shack SPL meter mounted on a tripod and pointed directly towards the ceiling from the listening position but I've found a couple of sources stating that the SPL meter should be pointed 45 degrees above the center channel speaker or pointed at the angle where the wall and the ceiling meet above the center channel speaker. I'll have to give that notion a shot.

Source 1

Source 2

.



Rick
Our Room

smile