Four powerful subwoofers support CDD Series full-range models for applications that require increased low frequencyoutput. When CSX subwoofers are used with CDD full-range systems, crossover and EQ functions can either be performedby the DX0.5, DX1.5 and DX2 system controllers, or by an amplifi er with onboard DSP option. All CSXenclosures can be supplied fi tted with optional fl ying points.