Alesis Active Speaker (Single) M1 MK3 Legendary Pedigree. Over the span of more than a decade, Alesis monitors have established an enviable, well-deserved reputation for accuracy and dependability that made them an excellent choice for professional useThe original best-selling M1 monitors were perfect for almost any situation. Our latest generation, the M1 Active MK3, features advancements in studio monitor technology that bring the Alesis M1 series to a whole new level of legendary unmatched professional sound. Modern Aesthetics. The M1 Active MK3 studio monitor utilizes a beautiful new 5-inch aluminum woofer that is lighter and stiffer than typical carbon-fiber, paper or glass-Aramid woofers, giving the MK3 an even faster transient attack and more linear response through the bass and midrange. Additionally, a precision-designed waveguide provides high-frequency dispersion in a well-controlled, predictable pattern. This ensures a widened listeningsweet spoteven well to the side (