The 20/20 S250 System Subwoofer is the core foundation of a professional full bandwidth surround sound monitoring system. With a massive 15" driver and 250W of clean, linear power, the 20/20 S250 System Subwoofer effortlessly provides the high SPL low frequency output necessary for multi-channel production work. Why a subwoofer with six inputs (discrete, active, balanced inputs, at that)?

The first input is used for monitoring the DolbyT Surround LFE (Low Frequency Effects) channel; signals appearing at the LFE input are fed directly to the 20/20 S250 System Subwoofer amplifier through a dedicated 120Hz crossover. The other five inputs are for the five mains channels. These signals are summed into an additional bass channel, used to extend the main monitors' frequency response well below their natural roll-off.

The Dual Input, Dual Crossover design features three operational modes, allowing you to monitor the Dolby LFE channel, extend the low frequency performance of the mains monitor channels, or do both functions simultaneously.

They've also included a variable Monitor Blend Crossover Control, fed by the summed mains signal; use the control to precisely and seamlessly match the subwoofer's high end with the natural low frequency roll-off of the mains monitors. The Variable Phase Control, also fed by the summed signal, allows you to compensate for phase differences that arise from subwoofer/mains-to-listener placement. The result is system-wide low frequency response that is accurate, defined, and completely in your control.

This flexibility, along with low frequency reproduction that is simply unrivaled for clarity, definition, and pure, thundering power, makes the 20/20 S250 System Subwoofer the perfect complement to today's direct field monitoring systems--including (of course) the 20/20 bas , 20/20p, 20/20, and Project Studio models.