Up for sale is a USED SABINE FBX-901 AUTOMATIC FEEDBACK EXTERMINATOR without the Power Supply. I was cleaning out my Storage Locker and found this unit, but I havent been able to locate the Power Supply. The Power Supply be purchased online from several different sources. Thjs unit is really well built, manufactured in the USA. The FBX-901 automatic feedback controller is a single channel digital signal processor with nine 1/10- or 1/5-octave filters (selectable). It can be used on the whole mix, on sub-groups, or on selected insert points. The unit will automatically sense feedback and determine its pitch, then assign a digital notch filter to the resonating frequency to automatically eliminate the feedback. The unit comes with both 1/4 TRS and XLR balanced and unbalanced input and output. The following performance criteria shall be met: Nine independent digital notch filters con-trolled automatically from 51Hz to 17,000Hz. Filter width: 1/10 or 1/5 octave (selectable), con-stant Q. Filter depth: DSP controlled, variable to -50dB. Resolution: 1/20 octave or better. Time required to find and eliminate feedback: 0.4 sec-onds, typical @ 1KHz. Total number of combined filters active: user selectable, from 1 to 9. Number of dynamic vs. fixed filters: user selectable. Last configuration stored in memory.
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