1. A method for selecting a cross-over frequency to attenuate a spectral notch in a cross-over region, the method comprising: measuring a full-range subwoofer and satellite speaker response in at least one position in a room; selecting a cross-over region; selecting a set of candidate cross-over frequencies and corresponding bass-management filters for the subwoofer and the satellite speaker; applying corresponding bass-management filters to the full-range subwoofer and satellite speaker response to obtain bass managed subwoofer and satellite speaker responses; level matching the bass managed subwoofer and satellite speaker responses to obtain leveled subwoofer and satellite speaker responses; summing the leveled subwoofer and satellite speaker responses to obtain a net bass-managed subwoofer and satellite speaker response; computing an objective function using the net bass-managed subwoofer and satellite speaker response for each of the candidate cross-over frequencies; and selecting the candidate cross-over frequency resulting in the lowest objective function.