2220iDriveRack® User ManualCongratulations on your purchase of the dbx ® 220i! The dbx 220i processor was designed to provideInstallers with programmable system processing along with dbx’s Advanced Feedback Suppression™(AFS™) algorithm for superior system control and performance. While the 220i offers all the toolsnecessary for processing a system, from EQ and De-Essing to Limiting and Ducking, the thing thatsets this product apart from the competition is the inclusion of our patent-pending AFS™ algorithmthat offers feedback filters with Qs up to 1/80th of an octave. This ensures that the music, or speechthat comes in, goes out unblemished by the feedback detection and elimination process. In hundreds ofdemonstrations of this patent-pending algorithms, people have tried to discern between the original andprocessed signal, but to no avail.Beyond the processing that the 220i is capable of, the 220i also offers control from the ZC series wallpanel controllers. These controllers provide convenient remote control capability of Program change,Zone output volume and Muting. The zone controllers are easy to install using CAT5 cable and fit instandard wall boxes.This manual will be your guide to understanding the full functionality of the powerful 220i. Bycombining the different components, the configuration possibilities are limitless. After you have becomefamiliar with the unit, we encourage you to experiment and find the most effective and efficient way torun your system by utilizing the powerful processing of the 220i.0.1 - Defining the 220i SystemThe dbx 220i is the most effective way to manage all aspects of post mixer processing and signal routing.The 220i essentially becomes the only device that you will need between the mixer and the power amps.The following are just some of the features of the 220i.220i features:• Advanced Feedback Suppression (AFS™)• Graphic and Parametric EQ• Compressor• Limiting• Auto Gain Control (AGC)• Noise Gate• De-Esser• Ducker• Bandpass Filters• 2x2 Matrix Mixer• 1.3 Seconds of Delay• RS-232 PC GUI control• Mic/Line Inputs• Wall Panel Control• Security LockoutIntroduction