This Polk Audio RC80i speakers include a 8" dynamic balance woofer and a 1" dynamic balance dome tweeter for rich, full bodied sound throughout your listening area. The speaker has an impedance level of 8 ohm and 90 dB sensitivity and produces clear sound. Their moisture resistant materials allow safe use in bathrooms, kitchens, saunas, and under outdoor eaves. Their width is 10.75 inches.