I re-ran Audyssey last weekend and then checked the levels manually afterward with my Radioshack SPL meter. The speakers were all fairly close to each other (ignoring the sub), but test tones were reading around 72 db at reference volume and I thought it should be around 75. Not a big deal, but I am wondering if I am doing something incorrectly. So, a dumb question: when taking SPL readings where do you position the SPL mic? I have always positioned it around ear level pointed up.