Beautiful Yamaha bookshelf Yamaha speaker set Speaker have been tested and fully operational small signs of use as seen on pictures further everything works perfect Small scratch on bottom right side occurred during transport. Specs : Eligible peak power: 110 Watt Construction: Enclosures most small format are 2-way, with a tweeter single mounted above the membrane of the woofers. Pregnant in 3 or 4 channels offer a depth and better acoustic quality and typically transmit a higher number of frequencies 2 routes Magnetic shielding: magnetic shielding is a parameter important for home theater cabinets, it is found now on most multimedia encteintes (if not all). If a non-armoured enclosure is placed too close to a TV or a monitor, magnetic energy that it produces can cause deformation of the image, or even a fatal degradation. Not to mention that this energy may also cause disruption on other devices.Yes Technical characteristics Frequency response: 55 Hz - 28 kHz Sensitivity: 87 dB Impedance: 6 ohm Components Average size: 130 mm Size of the tweeter: 25 mm Design Editing: library Dimension Width: 18.6 cm Depth: 22.3 cm Height: 30 cm