FBX2020P-OpGuide-031104.pmd - hto
1
FBX and FBX Feedback Exterminator are registered trademarks of Sabine, Inc., and are the brand names of its line of automatic feedback controllers. Covered
by U.S. Patent No. 5,245,665, German Patent No. 69118486.0, U.K. Patent No. 0486679, Australian Patent No. 653,736, and Canadian Patent No. 2,066,624-2.
ClipGuard™ adaptive clip level control is covered under U.S. Patent No. 5821889. Other patents pending.
Operating
Guide
INSIDE THIS GUIDE:
About the FBX2020-
Plus
1-2
FBX2020-
Plus
Controls
3
Applications
4-5
Understanding Fixed
& Dynamic Filters
6
Operating Instructions
6-8
Troubleshooting Tips
8
Product Specifications
9
Block Diagram
9
Cautions & Warranty
10
Compliance Information
11
Special features of the FBX2020-Plus:
• The FBX2020-Plus is a dual-channel unit with an improved algorithm that allows it to better distinguish the difference
between feedback and music.
• It has improved 20-bit digital resolution, providing superior dynamic range and signal-to-noise ratio.
• The FBX2020-Plus has 12 feedback filters per channel, giving the unit more feedback elimination power for the toughest
venues.
• The FBX2020-Plus's new ClipGuard® adaptive clip level control, with TURBO set-up mode, increases the effective dynamic
range by more than 10dB and makes set-up faster and easier.
• The FBX2020-Plus now includes a Dynamic Filter Reset option.
• The FBX2020-Plus incorporates an internal power supply.
• Standard FBX features such as lockable fixed filters and switchable 1/10- and 1/5-octave constant "Q" filters are also
included.
CONGRATULATIONS! You now have the state-of-the-art in feedback control. Your Sabine FBX2020-
Plus
Dual Feedback
Exterminator, a dual-channel, 20-bit digital filtering device that gives you automatic real-time feedback control and increases
the clarity and volume of your system.
The FBX2020-P
lus
incorporates the latest in digital signal processing technology. It automatically senses feedback in a sound
system and determines its pitch. It then places one of 12 constant "Q" micro-filters on the resonating frequency and eliminates
the feedback in typically less than one second.
QUICK-START OPERATION
For best results, read all operating instructions before using the FBX2020-
Plus
. 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. More detailed instructions are on page 7 inside this
operating guide.
1. Place the FBX between the output of your mixer and the input of your power amp.
2. With the mixer master volume down, put one FBX2020-Plus channel in active mode
(red BYPASS LED off), then slowly raise the mixer master volume to the point of
feedback.
3. Keep raising the master volume until all of your fixed filters and one dynamic filter are
set, then lower the volume slightly. The rest of the filters catch new feedback
frequencies throughout the program.
4. Repeat this procedure for the other FBX2020-Plus channel, & you're ready to go.
READ THE ENTIRE OPERATING GUIDE FOR COMPLETE INSTRUCTIONS.
©
2003 Sabine, Inc.
