The SB-1 Monitor is a two-way bass reflex design with a rear-firing port that uses a one-inch polymerdome compression driver with a 90 x 60 degree Tractrix Horn and a single 5.25-inch woofer. The SB-1 Monitor (which is part of the Klipsch Synergy System 6) has a mid-to-upper bass warmth and heft often missing in typical mini- or palm-sized systems.