The enclosure employs a unique patent-pending technology called CGD (Curved Groove Damping) to control the panel resonances of the loudspeaker. Strategically placed braces control panel resonances, and a sculpted groove filled with damping material runs through the interior walls. This makes the lengths between edges different at any point on the surface, limiting panel resonance and improving the sound, free from cabinet coloration. The bass extension and definition are extremely impressive and enjoyable, especially for such a compact loudspeaker. Black in stock, white available by special order. Pricing is for a pair, stands sold separately. In-store purchase only.