Edifier’s First Passive Bookshelf Speakers Be a part of a first for Edifier. The P12 is a set of passive bookshelf speakers. Passive bookshelf speakers give you the freedom to amplify and press the boundaries of sound. An external amplifier or receiver is required. Perfect for Home Theaters Complete your home theater with Edifier’s passive speakers. The P12 features a wall-mount bracket built-into both speakers allowing for placement for rear speakers. The P12 are also a great choice for front or centered speakers. When you purchase these speakers you receive 2 in one box. Wood Veneer MDF Enclosure The P12 passive speaker uses MDF as the wooden enclosure for the drivers and tweeters. The MDF enclosure reduces cabinet resonance. The P12 has a wood veneer finish perfect for classic setups to provide a vintage aesthetic. Silk Dome Tweeters and Bass Drivers The P12 uses an improved ¾ - inch silk dome tweeter for allowing for more room in the high end sound. For bass a 4-inch driver used for low frequency sound. Each speaker also has an improved bass reflex port that adds emphasis to the bass sound.