The Pyle PCB4BK bookshelf speaker provides a full range of high-quality sound and is an ideal addition to a home theater system. The 4-inch Pyle speaker has 200 watts of power for maximum sound. With 8-Ohm impedance, the audio has very little distortion for a clear, more accurate audio performance. The paper cone driver on the bookshelf speaker allows quality sound to come through and is standard in most home stereos. The Pyle speaker does not take up much space for small homes with a height of 4.8 inches, a width of 4.8 inches, and a depth of 5.2 inches. With a sensitivity of 87 dB, the Pyle PCB4BK provides a strong sound with less power. The frequency response range is 20 Hz to 18 kHz, and the amplifier has a RMS power range of 75 watts. The harmonic distortion for this Pyle speaker is at 1 percent kHz for optimal audio in a small speaker.