Infinity SUB R10 Reference Series 10" 200w Powered Subwoofer - Each (Black) Subwoofers require transient high power capability to address the needs of the dynamic low frequencies found in modern digital surround movie soundtracks and popular music. The Class D digital amplifier used in the SUB R10 provides the energy reserves needed to reproduce the lowest musical notes and sound effects with ease and authority. The SUB R10's low frequency transducer uses a light weight, but very stiff fibercomposite cone and a powerful motor structure to reproduce deep and accurate bass. The solid 0.75" (19mm) construction of the tunedport subwoofer cabinet with its internal edgetoedge windowpane bracing provides a firm foundation to reinforce the type of tight, punchy and dynamic deep bass required for highresolution digital surround and modern popular music. The controls on the SUB R10's rear panel allow you to properly tune its performance for seamless integration into your system. Adjustable level, crossover frequency and phase controls cover the basics while a selectable LF trim control provides up to 4dB of boost at 35Hz for added impact. Auto power control means you never need to worry about switching the SUB R10 on or off as its signal sensing circuitry will handle that for you. The SUB R10 woofer features a dark silver cone with a black chrome trim ring and no visible fasteners. Brushed trim with an embossed Infinity logo highlights the grille and completes the elegant design.