The CLA604A is an extruded aluminum column speaker fitted with 6 x 4" custom woofers and 4 x 1" dome tweeters, each coupled to a wave guide. The internal Class D amplification, 400W for woofers and 100W for tweeters with switch mode power supply and DSP processor with 4 equalization presets provide unexpected dynamics in a system of these dimensions. The rapid latching system with pins allows for the expansion of the system, doubling-up CLA604A modules to form a unified column with an absolute and coherent source integration and increase of SPL and low-frequency directivity control.