The frequency ratings for the above speakers are: Front-72hz-45khz,Center-73hz-45khz,Rears-99HZ-45KHZ. The Audyssey calibration at:Front 90hz,Center 120Hz,Rears 120HZ.I meant that if you replaced an amplifier or pre/processor with different specs(eg: S/N ratio, db ratings, power ratings)....Would you then need to re-calibrate????
REGARDS Bacardi
REGARDS Bacardi