The Infinity SM-152 speaker is a floor-standing model known for its large 15-inch woofer, capable of handling up to 300 watts of power, though it’s efficient enough to be driven by as little as 50 watts. It also features two 4-inch midrange drivers and a 3.5-inch dome tweeter, with midrange and treble controls for sound customization. Some users have noted the need to replace the woofer due to sound quality issues.