The SP-100 is a bass reflex 2-way system in a black plastic enclosure (also in white as the SP-100W). This speaker has a 3-1/2 in. woofer; 2 in. soft dome tweeter; and the driver magnets are shielded for video use. 45 Watts RMS power handling. Frequency Response is 50Hz - 22KHz. Measures 7-1/4 in.(H) x 4-3/4 in.(W) x 3-3/4 in.(D). Sold in pairs. Includes mounting brackets.