The DS18 XM3 is a 3-Way Active Crossover w/ x20 Frequency Multiplier Switch
Remote Sub-level Control 0-180 Degree Subwoofer Phase Switch Butterworth 12dB/octave Slopes Detente Frequency Selection Controls Gold RCA Input and Output Connectors
Power, Ground and Remote Connector PWM Power Supply LED Power Indicator Bass Boost
These are the crossovers that any serious customers "goes to" when in need of ultimate power, slick looks and all features necessary to defeat the competition.
Subwoofer low pass adjustments will help you perfectly tune your sub in compliance with specs.