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The industry standard in automatic feedback control: the FBX-2020Plus Dual Feedback Exterminator®, with 24 FBX filters (12 per channel), 20-bit digital resolution, andSabine's patented ClipGuard Adaptive Clip Level Control, which allows the FBX-2020 to accept input signals up to 27dBV without clipping, increasing the effective dynamic range to 105 dB. The FBX-2020Plus replaces the FBX-1802. Quick View of the FBX-2020Plus
Like all of Sabineís patented FBX Feedback Exterminators, the FBX-2020Plus does what no other audio product can do: It automatically detects and eliminates feedback without damaging your sound. The FBX precisely places an extremely narrow filter directly on the ringing feedback frequency, and the filter is placed only as deep as is necessary to eliminate the feedback. The result is more gain before feedback while preserving your clear, rich sound. If you use your 31-band EQ just to shape your sound and let your FBX control feedback, you should expect up to 9 dB more gain and a dramatic improvement in the sound quality. Why? When you pull down a graphic EQ slider to chase feedback, you also pull out a big chunk of your sound. FBX constant-Q filters are 10 times narrower than graphic EQ filters, and FBX filters are placed exactly on the ringing feedback, with 1 Hz resolution, all in less than a second (typical) ó an impossible task for a graphic EQ. Narrow filters and precise placement mean more gain and more clarity. It's just that simple. The FBX-2020Plus is a truly adaptive audio product. ClipGuard is always there to maintain the optimum dynamic range, and the FBX algorithm clearly distinguishes music and speech from feedback. This makes the FBX more than just a set-up tool — it controls feedback for the duration of the performance or the entire life of the installation, all without needing any further adjustment. The inside story on FBX filters |
| FILTERS 12 independent digital notch filters per channel, controlled automatically from 40 Hz to 20 KHz. Filter width: user-controllable, either 1/10 or 1/5 octave, constant "Q" * Resolution: 1/50 Octave from 40 Hz to 20 KHz Time required to find and eliminate feedback: 0.4 seconds, typical @ 1KHz Total number of combined filters active per channel: user selectable, from 1 to 12 Number of dynamic vs. fixed filters per channel: user selectable LAST CONFIGURATION STORED IN MEMORY INPUT/OUTPUT** Input/Output Maximum Signal Levels: Balanced +27dBV peak, unbalanced +21 dBV peak Output Drive: Unit will perform as specified driving a load >600 Ohms Input Impedance: Balanced or unbalanced >10K Ohms, PIN 2 high Output Impedance: Balanced or unbalanced 10 Ohms nominal, PIN 2 high Bypass: True power off bypass Headroom: +23dB peak @ 4dBV nominal input, balanced I/O Connectors: XLR-3 and 1/4" TRS | PERFORMANCE*** Spectral Variation: +/- .25 dB, 20Hz to 20 KHz SNR: >100 dB, typical THD: <0.01% @ 22 dBV sine wave at 1 KHz Dynamic Range: >105 dB with automatic clip level active POWER INPUT Factory configured to either 115 VAC or 230 VAC. 50/60 Hz, 12 Watt input. FUSE REPLACEMENT To reduce the risk of fire, replace only with 5x20 mm, .315 A, 250 V, fast-acting fuses. DIMENSIONS 1-U rack mount; 19 x 1.75 x 8.5 ins. nominal (rack mountable); 48.3 x 4.5 x 21.6 cms. nominal (rack mountable) WEIGHT 8.0 lbs (3.6 kg) nominal |
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