When you listen to any of Definitive Technology's award-winning ProSub powered subwoofers, you will discover true state-of-the-art bass performance, extending down well beyond the limits of audibility into the range of purely physical subsonic energy that shakes the body and stirs the soul. This has long been the most exciting, sought after and rarest of audio achievements, and now it is yours for a remarkably reasonable price.

Definitive's ProSub 800 is an advanced state-of-the-art technology active subwoofer with built-in high-power, high-current amplifier and sophisticated electronic crossover in combination with an 8 inch driver of the highest quality. A complete array of controls and connections allows it to be hooked up to and perfectly integrated with any stereo or multi-channel audio system, and tuned for optimum performance in any room. The sonic result is accurate, awe-inspiring, high-impact, high-reality bass performance with superior transient response, vanishingly low distortion, stupendous subsonic power and high output capabilities. It is truly a unique combination of delicate musicality and thunderous power for the ultimate in home theater sound effects as well as unsurpassed musical excellence.

Definitive's Patented Infinite Power Source MOSFET Power Amplifiers All Definitive's ProSub powered subwoofers incorporate our unique, patented digitally-coupled Infinite Power Source amplifiers with high-current direct coupled power supplies and discrete MOSFET output devices to ensure perfect high-definition resolution and reproduction of the most dynamic program material and demanding sub-bass transients. Construction quality is absolutely state-of-the-art with only the highest quality components used including mil-spec glass epoxy circuit boards and precision resistors and capacitors for many years of faultless superior performance. In addition, tremendous current reserves, high peak-power capabilities and two protection circuits ensure that these subwoofers can never be overdriven. There is also a convenient, signal-sensing, auto on/off feature.

Definitive's High-Definition Subwoofer Drivers Deliver Superior Detail and Lightning-Fast Transient Response The powerful, high-definition drivers used in all our powered subwoofers were specifically engineered by Definitive for their task: to deliver rock-solid low distortion bass, reaching down to the lowest subsonic frequencies, with an outstanding quality of superior transient response unequaled in the world. The special ultra-stiff, low-mass cones (for super-fast transient response) are joined to specially formulated surrounds and long-throw voice coils and spiders. The incredibly rigid baskets are engineered to hold the massive magnet structures and large voice coils in absolute alignment. The high temperature voice coils are made of aluminum wound with triple insulated ultra-pure copper wire and baked in epoxy for power handling in excess of 750 watts.

Rock Solid Non-Resonant Cabinets Ensure Pure Low Distortion Response The cabinet of a loudspeaker plays a large part in its sonic performance. Resonance and vibration can add unwanted distortion as well as drain away important energy from the system. Definitive's subwoofers utilize monocoque cabinets, which have been specifically engineered to be totally inert and vibration free, to ensure you of absolutely pure sonic reproduction. Monocoque means that the cabinet is of a unitized construction where all panels are permanently joined together into one solid structure. The cabinet walls themselves are high-density medite fused together by space-age polymer adhesives. The front and rear baffles are extra thick and the cabinets each incorporate multiple internal braces to ensure total solidity.

Completely Adjustable Electronic Crossovers Assure a Perfect Match to Your System and Room The sophisticated low distortion electronic crossovers incorporated in all our powered subwoofers are a masterpiece of design and execution. They contain a complete range of hookups, circuitry and features which allow the subwoofers to be connected and perfectly blended with any system as well as adjusted for optimum performance in any room.

All Definitive powered subwoofers have continuously adjustable low pass filter controls which allow you to choose a roll-off of from 40 to 150 Hz for the high end of the subwoofer. This unique "dual stage" roll-off is extremely steep which ensures perfect blending with your main speakers as well as eliminating unwanted midrange from the subwoofer. This is especially important because it gives you much greater flexibility in placing your subwoofer in your room without being able to hear where it is located. All our powered subwoofers also have a separate low-level direct LFE input for Dolby Digital which bypasses the crossover network. All models have a built-in speaker level high-pass crossover preset at 80 Hz (except ProSub 60 preset at 100Hz) and, of course, a precision level control allows you to perfectly adjust the volume of the subwoofer to match your system and room as well as to fulfill your own personal sonic preferences.

A Full Range of Inputs and Outputs Facilitates Easy Hookup of Your Definitive Subwoofer to Any System All Definitive powered subwoofers have a complete range of inputs, outputs and features to allow easy and effective hookup to any system either singly or in a stereo pair. Both (high) speaker level and low-level inputs are provided in case you don't have a subwoofer output. In addition, all models have a separate direct-in LFE low-level input (which bypasses the crossover network) which may be used by itself or in combination with left and right channel high- or low-level inputs for the ultimate in subwoofer flexibility and performance.