Driver Technology Pressure Coupled Radiator Design: The ProMonitor satellite provides clear, high-definition sound by pressure-coupling Definitive's exclusive BDSS technology driver to an equal-sized mid/bass radiator cleverly placed on the top of the satellite. This technique doubles the lower-midrange radiating area of the speaker without increasing the size of the enclosure. The result is a warm and life-like sound. BDSS Technology: Definitive Technology's Balanced Double Surround System (BDSS) drivers offers a wide-bandwidth accurate frequency response, broad dispersion, low distortion, and detail retrieval; so you hear more the music with greater accuracy and enjoyment. BDSS drivers incorporate the following design features. Balanced Double Surrounds: The speaker's balanced double surrounds support the cone at two points to provide better mechanical stability for longer, more linear excursion, and improved damping to suppress parasitic cone resonance. Mineral-Filled Polymer Cone: The ProMonitor features a deeply drawn mineral-filled polymer cone engineered using sophisticated 3D modeling techniques for wide range performance. Waveguide: The cone's integrated waveguide smoothes off-axis response for broad, even dispersion and better imaging. High Temperature Voice Coil: The driver's high temperature, oversized, lightweight vented voice coil offers improved power handling and quick transient response. The Lengthened voice coil also offers increased linearity and lower distortion. Magnet Structure: The driver's magnetic system is optimized by finite element analysis to maximize magnetic flux in the gap for high efficiency and linear excursion. Die-Cast Alloy Basket: The die-cast alloy basket minimizes ringing and vibration while the open area minimizes back wave reflection. Drivers: The Definitive Technology ProMonitor 1000 features a 5-1/4" BDSS driver coupled to a 5-1/4" pressure-driven planar low-frequency radiator, and a 1" pure aluminum dome tweeter. Break-In Period: The ProMonitor 1000 loudspeakers will sound good right out of the box; however, an extended break-in period of 20-40 hours or more of playing is required to reach full performance capability. The break-in period allows the suspensions to work in and results in full bass, a more open midrange, and smoother high frequency reproduction. Enclosure Design Non-Resonant PolyStone Cabinet: The Definitive Technology ProMonitor 1000 uses a non-resonant PolyStone cabinet with low diffraction construction. The speaker cabinet is available in a high-gloss black or white finish. The speaker's cabinet feature a removable cloth grille. Connections Binding Posts: The ProMonitor 1000 is equipped with a pair of gold-plated, 5-way binding posts to attach your receiver's speaker wire. Mounting Options Mounting: The Definitive Technology ProMonitor 1000 loudspeakers may be placed on a stand or shelf, or mounted on the wall or ceiling. The ProMonitor 1000 features a pedestal foot which allows it to fit securely and safe on a stand or shelf. The attached pedestal foot can be removed to mount the speaker to Definitive Technology's matching speaker stand (ProStand, sold separately) or to wall-mount the speaker. The ProMonitor 1000 can also be wall-mounted using the rear-panel keyhole slot. In addition, there is a 1/4"-20 threaded insert on the back of the speaker so you can use an optional articulating bracket (sold separately) to hang the speaker on a wall or ceiling.