One of the most significant technological innovations of the DLM line is Mackie TruSource™ Technology. It's a potent combination of a brand new, completely unique, transducer design and powerful proprietary digital signal processing. Both full-range models feature the extremely compact TruSource driver, which combines the high and low-frequency driver into a vertically-aligned, common-magnet design that is ultra-efficient and extremely capable. The sonic reproduction is incredibly transparent across the entire frequency range. DLM Series loudspeakers deliver unmatched fidelity.