Revel M106’s 6.5″ low-frequency driver features distortion reduction mechanisms that stabilize the flux field during operation, assuring low distortion even at high listening volumes. These precision transducers utilize ribbed aluminum cones for ideal piston-like behavior that eliminates a major source of resonances that are clearly audible in most other loudspeakers. Their cast aluminum frames eliminate another source of resonances that is common in many lesser-quality loudspeakers. These loudspeakers employ a sophisticated low-frequency port with identical flares on both ends. This greatly minimizes dynamic compression and port-generated noise, assuring low-distortion low-frequency performance. The Revel M106’s 1″ tweeter has been created around a newly designed motor and dome assembly that sets a new standard of transparency for speakers anywhere near the Performa3’s class. The tweeter’s integrated acoustic lens waveguide is based on a breakthrough mathematical approach that accurately matches the tweeter’s dispersion to that of the low-frequency transducer in the crossover region. This gives the loudspeaker very smooth sound far off-axis an important contributor to overall sound quality, providing consistent sound over an exceptionally wide listening area. The enclosure is are similar to the flagship Ultima2 Series. These fully-curved enclosures are inherently stiffer than conventional box shapes and are formed with contiguous wood layers that prevent splitting. They feature strategically-oriented bracing that eliminates the possibility of enclosure induced coloration. These beautiful, modern enclosures are finished in high-gloss piano black, high-gloss piano white or genuine American walnut in a process that exceeds automotive finish quality. The grilles are designed to minimize sonic diffraction or veiling and provide a clean, subtle appearance. The magnetic grille attachment method completely eliminates ugly hardware on the loudspeaker baffle, so if you decide to use the loudspeakers without grilles they will look like they were designed to be used without grilles. Owners manual. Read the Absolute sound review.