The JBL Northridge Series N24 Bookshelf Speakers Set Pair in black is a pair of wired 2.0 channel speakers with a power output of 100W RMS. These rectangular-shaped speakers are made of plastic and have an impedance of 8 Ohms. The JBL N24 model is compatible with JBL brand speakers and has dimensions of 5.5 inches in length, 9.5 inches in height, and 6.5 inches in width. These bookshelf speakers are perfect for improving the audio experience in any home entertainment setup.