Ohmic Audio

Table A.12: Crossover Slope Characteristics

Slope dB/octave Order Phase Shift Overlap Best Use
1st Order 6 dB/oct Butterworth 45° High Minimal filtering, time-aligned
2nd Order 12 dB/oct Butterworth 90° Moderate General purpose, common
3rd Order 18 dB/oct Butterworth 135° Low Better separation
4th Order 24 dB/oct Linkwitz-Riley 180° Minimal Clean separation, common
6th Order 36 dB/oct Butterworth 270° Very Low Maximum separation

Note: Linkwitz-Riley 4th order sums to flat response when drivers are in phase.


Decibel Reference Chart