Each "order" represents 6db/octave roll-off.
ie: 1st order crossovers have a more gradual blending between the drivers than 2nd, 3rd or 4th order crossovers.
This purportedly results in better phase response, but increases the amount of power sent to the tweeters.
Lower order crossovers can also be more susceptible to "lobing" effects and cancellations off-axis.
ie: 1st order crossovers have a more gradual blending between the drivers than 2nd, 3rd or 4th order crossovers.
This purportedly results in better phase response, but increases the amount of power sent to the tweeters.
Lower order crossovers can also be more susceptible to "lobing" effects and cancellations off-axis.