Harman Kardon MAS Speakers MAS 5" Bass-Reflex Bookshelf Speakers, Black As part of a compact music system, the MAS Speakers are proud overachievers, offering a pair of custom 5-inch (130-millimeter) bass-reflex speakers with 1-inch (25-millimeter) dome tweeters.The MAS Speakers utilizes a two-way configuration featuring flat-panel, 5-inch (130-millimeter) bass drivers and proprietary 1-inch (25-millimeter) MMD dome tweeters with integral waveguides. The system also eliminates unwanted sonic refractions for cleaner, more natural sound and improves off-axis performance for more accurate stereo imaging and high-frequency performance.When it comes to speaker connectors, quality of sound is of paramount important. Thats why the MAS Speakers keeps its connections to the outside world secure and reliable, using gold-plated binding posts. You can also interconnect the system with a variety of speaker-wire formats, thereby offering an increased degree of product compatibility.