Source Four LED™ Series 2 luminaires have added lime LED emitters that increase lumen output in open white and lighter tints, making the luminaires brighter and livelier, better matching the color of conventional Source Four® fixtures. Additional red LED emitters in the Lustr® array allow the red and blue ends of the color spectrum to marry better, for truer-to-life light that fills in the gaps that ordinary LEDs can leave behind. The Daylight HD and Tungsten HD arrays create stage- and studio-ready, variable cool- and warm-white light, and produce a high lumens-per-watt ratio, claims the manufacturer.