This sort of difficulty is a reason one might prefer Pioneer's MCACC to Audyssey. The MCACC auto calibration sets crossover, volume, distance, and equalization values which you have direct access to and can later adjust as you see fit.

Greg
VP180, M80s, M22s, QS8(4), CSW S305s, EP500, Pioneer VSX-90
M2i, M3(2), Pio vsx-1020