To the question of time alignment for speakers with passive crossovers, these quotes from the PreMate review should clarify things. From the Positive Feedback review:
... it corrects for
."the distortion that all speakers makeelectro-mechanical devices that they areand offer room compensation as an added extra. While righting frequency-response errors as other units do, they also uniquely correct critical timing errors by adjusting thousands of frequency groups so that they arrive on time.
"In correcting the speakersbefore the roomour comprehensive DEQX-Cal software generates correction filters for phase, timing coherence and frequency-response. Only then does DEQX-Cal measure from the listening area for room correction.
"It corrects speaker frequency-response and timing errors by adjusting thousands of frequency groups, depending on your speakers' measurements, so that they arrive at the correct time."
Doesn't get much clearer than that.