a 60hz FREQ is 16 feet long. 1/4 wavelenght is 4 feet
As a rule, path length differences of less than 1/4 wavelength do not need to be corrected (time-aligned).
So, if the distance from listening position to main speakers and subwoofer are less than 1m different and the crossover point is below 80Hz, no correction needed.
As a rule, path length differences of less than 1/4 wavelength do not need to be corrected (time-aligned).
So, if the distance from listening position to main speakers and subwoofer are less than 1m different and the crossover point is below 80Hz, no correction needed.