Altec Lansing BXR1221 3-Piece 2.1 Channel Multimedia Speaker System (Black) Altec Lansing 3-Piece 2.1 Channel Multimedia Speaker System General Features: Black design 2.1 channel Volume and Bass controls LED power indicator Power On/Off switch Two (2) 50mm full-range drivers 100mm down-firing woofer Sound Pressure Level (SPL): 84dB Subwoofer Dimensions: 7.29 x 4.96 x 6.22-inches (H x W x D, approximate) Satellite Speaker Dimensions: