DS18 DS-XM3 Two-to-Three Way Electronic Crossover with Remote Control 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