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User Manual for Bosch LBB 1968 00 Plena Feedback Suppressor Click to enlarge the picture
Contents of the user manual for the Bosch LBB 1968 00 Plena Feedback
- Product category: Feedback Controllers Bosch
- Brand: Bosch
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Bosch Feedback Controllers
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User manual for the Bosch LBB 1968 00 Plena Feedback contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Bosch product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Bosch user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Bosch product will considerably shorten its lifespan!
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Product description The Bosch LBB 1968/00 Plena Feedback Suppressor can greatly reduce the risk of acoustic feedback when using a PA system. It does this by using a powerful DSP with a patented algorithm. The unit actively filters out unwanted room reverberations with an echo-cancellation feature and dereverberation algorithm. The device can add a little inaudible noise or shift the output frequency by five hertz. By doing this, it's able to detect the reverb component of the signal and remove it before feedback occurs - leaving the original signal intact.The Plena Feedback Suppressor also features an adaptive filter, which can be switched between fast and accurate modes. The fast mode is ideal for situations where the microphone is changing positions over time, while the accurate mode is ideal for situations where the microphone keeps a fixed position and the acoustical environment is more stable. This allows the adaptive filter to converge more slowly, suppressing feedback causing reverberations more effectively. Plus, depending on the environment and whether you've selected the fast or accurate mode, up to 12dB of gain can be added before your system starts to feedback.There's a built-in automatic mixer as well. The mixer is designed for the two microphone inputs. If you're using both mic inputs simultaneously, the chances of feedback are higher. The automatic mixer reduces the gain of the mic with the lowest signal input and increases the gain of the mic with the highest signal input. This keeps the combined gain constant and provides optimal speech intelligibility for the moving speaker. This feature works even when the feedback suppressor is deactivated. - Patented feedback suppression algorithm
- Suppresses feedback before it occurs
- Automatically adapts to the acoustical situation
- Up to 12 dB additional gain before feedback occurs
- Balanced line or microphone input with phantom supply
- Second microphone input with automatic mixer
UPC: 800549175838 In the Box Bosch LBB 1968/00 Plena Feedback Suppressor Power Cord 19.7" (50 cm) XLR Cable Plena CD Set of 19" (48.3 cm) Mounting Brackets 3-Year Warranty Table of Contents
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Technical parametersBosch LBB 1968/00 Specs | | | Sample Rate | 32 kHz | | Frequency Response | 125 Hz - 15 kHz | | Distortion | <0.1% @ 1.0 kHz | | Gain | Bypass Mode: 0 dB line in, 24 / 36 / 48 dB mic in Active Mode: 0 dB line in, 24 / 36 / 48 dB mic in | | Signal-to-Noise Ratio | >90 dB | | Signal Delay | <11 ms | | Decorrelator | Frequency Shift 5 Hz Up / Masked Noise | | | | Mic/Line Input | Connectors: 3-pin XLR balanced / 5-pin DIN balanced Max level: 18 / 6 / -6 dBV line in Max level: -18 / -30 / -42 dBV mic in Impedance: 10 kohm / 2 kohm (line / mic) CMRR: >25 dB (50 Hz to 20 kHz) Phantom Power: 16 V (mic only, switchable) Priority Control: loop through of pin 4 & 5 of DIN | | Mic Input | Connectors: 3-pin XLR balanced / 5-pin DIN balanced Max level: -18 / -30 / -42 dBV mic in Impedance 2 kohm Phantom Power: 16 V (switchable) Priority Control: loop through of pin 4 & 5 of DIN | | Line Input | Connector: Cinch (unbalanced) Max Input Level: 18 / 6 / -6 dBV Impedance: 20 kohm | | Line Output | Connector: 3-pin XLR (balanced) Max Level: 18 / 6 / -6 dBV (line in) Max Level: 6 dBV (mic in) Impedance: <100 ohm | | Line Output | Connector: Cinch (unbalanced) Max Level: 18 / 6 / -6 dBV (line in) Max Level: 6 dBV (mic in) Impedance: <100 ohm | | Mic Output | Connector: 5-pin DIN (balanced) Max Level: 22 / -34 / -46 dBV (line in) Max Level: 34 dBV (mic in) Impedance: <100 ohm Priority Control: loop-through of pins 4 and 5 of DIN from inputs | | | | Certifications | Europe: CE / Declaration of Conformity Safety: acc. to EN 60065 Immunity: acc. to EN 55103-2 Emission: acc. to EN 55103-1 | | Mounting | Stand-Alone 19" (48.3 cm) Rack / 1U High | | Color | Charcoal | | Operating Temperature | 14 to 131°F (−10 to 55°C) | | Storage Temperature | −40 to 158°F (−40 to 70°C) | | Relative Humidity | <95% | | Power Requirements | 115/230 VAC (±10%, 50/60 Hz) | | Inrush Current | 3.0 A @ 115 VAC 1.5 A @ 230 VAC | | Power Consumption | 50 VA (max) | | Dimensions (HxWxD) | 2.2 x 16.9 x 10.6" (5.6 x 43.0 x 27.0 cm) | | Weight | 6.6 lb (3.0 kg) | | | | Package Weight | 10.7 lb | | Box Dimensions (LxWxH) | 22.5 x 14.0 x 8.5" |
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