The L65 + L65S system is a compact and versatile active DSP column system consisting of a passive L65 full-range column and a compact 18-inch active DSP-controlled L65S subwoofer. The L65 full-range passive floorstanding loudspeaker is built with 6 custom 5-inch Audiocenter HPs and 4 custom 1-inch Beyma drivers. The drivers are engineered with sophisticated measurements and elaborately arranged by PhycalTM physical calibration technology to enhance vertical acoustic beam coverage. The ETETM waveguide system developed by Audiocenter forms a cylindrical wave, then couples continuously, together with a custom horn design to achieve the perfect frequency response joint, which provides precise horizontal coverage and ensures sound well balanced, clean and clear. L65 can meet reinforcement application in different places and complex spaces. L65S is a compact active DSP controlled subwoofer with an Audiocenter designed 18 speaker and a very powerful 4000W Class D amplifier module. L65S is with built-in Bluetooth which supports multiple signal input. L65+L65S is a plug and play column system with easy adjustment Presets are made with lots of testing.The system can be put into various applications.HEAVY PRODUCT