User manual SABINE FBX-2020

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Manual abstract: user guide SABINE FBX-2020

Detailed instructions for use are in the User's Guide.

[. . . ] OPERA TING GUIDE V2 QUICK-START OPERATION DECLARATION OF CONFORMITY 1 2 FBX-2020 CONTROLS 4 APPLICATION OF COUNCIL DIRECTIVE 2 ABOUT THE FBX-2020 3 FIFTH OCTAVE FILTER STAGE ACTIVITY POWER SWITCH FUSE APPLICATION DIAGRAMS 4 4 4 4 5 FREQUENCY RESPONSE WORLD'S BEST FEEDBACK CONTROLLER WHO NEEDS FBX?ACTIVE/BYPASS SWITCH SIGNAL LEVEL RESET SET TOTAL NUMBER OF FILTERS SET FIXED LOCK FIXED FILTERS A/C POWER INPUT AUDIO INPUTS & OUTPUTS 3 3 3 3 3 4 4 4 4 4 4 4 4 FBX SETUP FOR MONITORS FBX SETUP FOR ENTIRE MIX FBX SETUP FOR SINGLE INSERT POINT FBX SETUP FOR INSERT SEND & RETURN FBX-2020 OPERATING INSTRUCTIONS 5 5 6 6 6 6 6 CLIPGUARDTM TURBO MODE GUIDE HOW TO OPERATE THE FBX-2020 HOW TO USE THE FBX-2020 FEATURES USING THE LOCK FIXED FEATURE SELECTING FILTER WIDTH IMPORTANT OPERATING CONSIDERATIONS MEMORY BYPASS MODE RESETTING THE FILTERS TURBO MODE SETUP DEFEATING TURBO MODE MOBILE VS. STATIONARY MICROPHONES FREQUENTLY ASKED QUESTIONS INDEX CAUTIONS & WARNINGS LIMITED WARRANTY 6 7 8 8 8 8 8 8 8 8 8 8 9 9 11 12 WHERE THE FBX FITS IN YOUR SOUND SYSTEM A NOTE ABOUT GRAPHIC EQUALIZERS UNDERSTANDING FIXED & DYNAMIC FILTERS CLIPGUARDTM ADAPTIVE CLIP LEVEL CONTROL 6 6 6 6 FBX-2020 ENGINEERING SPECIFICATIONS 10 QUICK-START OPERATION For best results, read all operating instructions before using the FBX-2020. If you're already familiar with the FBX or just want a basic overview of FBX operation, this simple quick-start procedure is for you. [. . . ] The LED indicating LOCK FIXED should be off when initializing. 7 How To Use The FBX-2020 Features Using the LOCK FIXED feature In very few situations the FBX may mistake music for feedback and drive the fixed filters deeper than necessary, such as in a church with a pipe organ, or during a performance with a great deal of intentional sustained electric guitar feedback. You can prevent the fixed filters from deepening beyond their preset depth by pressing the LOCK FIXED button on the front panel after setup. The LOCK FIXED LED will light to indicate that the FBX is in LOCK FIXED mode. The fixed filters stay locked until you press the LOCK FIXED button again. Selecting filter width If you're using the FBX for a music application, the standard 1/ 10-octave Constant Q filter is usually preferable. However, in spoken word applications, such as lectures or teleconferencing, we recommend using the wider 1/5-octave filter for more robust feedback control. You may enable the 1/5-octave filters by pressing the "FIFTH OCTAVE" button, and the built-in LED will light. Press the button again to set subsequent filters to standard 1/10-octave filters. You can mix filter widths in the same channel (see "IMPORTANT TIP" below). setup feature cuts the time for FBX filter initialization to just a few seconds, and it reduces the volume level of the feedback during setup. The 2020 is set in TURBO mode at the factory and automatically engages every time you press RESET (resetting filters). The 2020 automatically returns to normal program mode when the first dynamic filter is set or when you press the front panel LOCK FIXED button. ALL FILTER LEDS WILL CYCLE TO INDICATE THE FBX IS ABOUT TO EXIT TURBO MODE. WARNING: TURBO Mode will cause distortion in your audio program -- it is for setup only. You must follow the setup procedure outlined in the previous section, and do not play program during TURBO setup mode. (Clip level is set to the lowest level so the feedback clips quickly; therefore, your program will also be clipped in TURBO mode. Be sure a dynamic filter is set, and if one isn't, press the LOCK FIXED button before your program begins. ) You'll know the 2020 is in TURBO mode if the red CLIP LED flashes when no other signal level LEDs are lit. Defeating Turbo Mode You can manually override TURBO mode if necessary: Press LOCK FIXED (the LOCK FIXED light will turn on), then press it again. (LOCK FIXED light will go out). Important Operating Considerations Memory The FBX stores the positions and depths of the filters in nonvolatile internal memory when the unit is turned off or during a power failure. The unit will return all filters to their previous frequencies and depths when it is turned back on. Mobile vs. Stationary Microphones One significant advantage offered by the Sabine family of FBX feedback eliminator products is their ability to adapt to changing acoustical relationships involving sound system components and various user applications. One major source of potential feedback problems arises in situations with wireless microphones, when the user of the wireless mic is moving around the stage/auditorium. As a microphone moves in a sound space, with varying degrees of proximity to the speakers and varying acoustic responses, feedback frequencies may shift. In such a situation, feedback-free mobility may be more important a concern than maximum system gain. One method of setting FBX filters with mobile microphones is to turn a microphone on and walk around to the various possible microphone locations. [. . . ] In the event of a defect in material and/or workmanship covered by this limited warranty, Sabine will repair the defect in material or workmanship or replace the product, at Sabine's option; and provided, however, that, in any case, all costs of shipping, if necessary, are paid by you, the purchaser. THE WARRANTY REGISTRATION CARD (or ONLINE REGISTRATION FORM) SHOULD BE ACCURATELY COMPLETED, MAILED TO AND RECEIVED BY SABINE WITHIN FOURTEEN (14) DAYS FROM THE DATE OF YOUR PURCHASE . Bring the defective item to any Authorized SABINE DEALER and present therewith the ORIGINAL PROOF OF PURCHASE supplied to you by the AUTHORIZED SABINE DEALER in connection with your purchase from him of this product. If the DEALER is unable to provide the necessary warranty service, you will be directed to the nearest other SABINE AUTHORIZED DEALER which can provide such service. [. . . ]

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