Handbook
Table Of Contents
- Fig A: Packing List.
- Fig B: Mains Cable Wire Colours
- Fig C: Mains Lead Table.
- Fig D: RB-RK1Small Redbox Front Rack-mount Kit .
- Fig E: RB-RK2 Small Redbox Rear Rack-mount Kit.
- Fig F: RB-RK3 Large Redbox Rear Rack-mount Kit.
- Fig 1-1: RB-SS10 Front Panel.
- Fig 1-2: RB-SS10 System Block Diagram.
- Fig 1-3: RB-SS10 Front Panel.
- Fig 1-4: RB-SS10 Rear Panel.
- Fig 1-5: Analogue Audio Inputs Pin Connections
- Fig 1-6: Remote Start Pin Connections.
- Fig 1-7: Connection Example.
- Fig 1-8: Remote Select/Switch Input Connections.
- Fig 1-9: Connection Example.
- Fig 1-10: Status Output Pin Connections.
- Fig 1-11: Connection Example.
- Fig 2-1: RB-DSS10 Front Panel.
- Fig 2-2: RB-DSS10 System Block Diagram.
- Fig 2-3: RB-DSS10 Front Panel.
- Fig 2-4: RB-DSS10 Rear Panel.
- Fig 2-5: Digital Audio Inputs and S/PDIF Output Pin Connections.
- Fig 2-6: Remote Start Pin Connections.
- Fig 2-7: Connection Example.
- Fig 2-8: Remote Select/Switch Input Connections.
- Fig 2-9: Connection Example.
- Fig 2-10: Status Output Pin Connections.
- Fig 2-11: Connection Example.
- Fig 3-1: RB-PMX4 Front Panel .
- Fig 3-2: RB-PMX4 Block Diagram.
- Fig 3-3: RB-PMX4 Rear Panel.
- Fig 3-4: RB-PMX4 Front Panel Controls.
- Fig 4-1: RB-SSML1 Front Panel.
- Fig 4-2: RB-SSML1 Block Diagram.
- Fig 4-3: RB-SSML1 Rear Panel.
- Fig 4-4: DIP Switch to Control Mic & Meter Features.
- Fig 4-5: RB-SSML1 Front Panel.
- Fig 5-1: RB-MA1 & RB-MA2 Front Panel.
- Fig 5-2: RB-MA1 & RB-MA2 Block Diagram Single Channel.
- Fig 5-3: RB-MA1 Rear Panel.
- Fig 5-4: RB-MA2 Rear Panel.
- Fig 5-5: Switch to Control LF Filter and Phantom Power.
- Fig 6-1: RB-DMA2 Front Panel.
- Fig 6-2: RB-DMA2 System Block Diagram.
- Fig 6-3: RB-DMA2 Front Panel.
- Fig 6-4: Jumpers to Disable Fine Gain Control.
- Fig 6-5: RB-DMA2 Rear Panel.
- Fig 6-6: RB-DMA2 Status Select Switches.
- Fig 6-7: RB-DMA2 Frequency and Sync Rotary Switch Selections.
- Fig 7-1: RB-ML2 Front Panel.
- Fig 7-2: RB-ML2 Block Diagram.
- Fig 7-3: RB-ML2 Rear Panel.
- Fig 7-4: Switch to Control LF Filter and Phantom Power.
- Fig 8-1: RB-SL2 Front Panel.
- Fig 8-2: RB-SL2 Block Diagram.
- Fig 8-3: RB-SL2 Rear Panel.
- Fig 9-1: RB-SM1 & RB-SM2 Front Panel.
- Fig 9-2: RB-SM1 & RB-SM2 Block Diagram Single Channel.
- Fig 9-3: RB-SM1 Rear Panel..
- Fig 9-4: RB-SM2 Rear Panel.
- Fig 10-1: RB-LC3 Front Panel.
- Fig 10-2: RB-LC3 Block Diagram.
- Fig 10-3: RB-LC3 Rear Panel
- Fig 10-4: Output 1 Configuration Setting.
- Fig 10-5: Output 2 Configuration Settings.
- Fig 10-6: Output 3 Configuration Settings.
- Fig 11-1: RB-MM1 Front Panel.
- Fig 11-2: RB-MM1 System Block Diagram.
- Fig 11-3: RB-MM1 Rear Panel.
- Fig 12-1: RB-OA3 Front Panel.
- Fig 12-2: RB-OA3 System Block Diagram.
- Fig 12-3: RB-OA3 Rear Panel.
- Fig 12-4: RB-OA3 Unit Identity Definitions.
- Fig 12-5: RB-OA3 Unit Identity Reset Settings.
- Fig 12-6: RB-OA3 Studio Expansion Diagram.
- Fig 12-7: RB-OA3 Bus Expansion Diagram.
- Fig 12-8: RB-OA3 Studio & Bus Expansion Diagram.
- Fig 12-9: RB-OA3 Multiple RB-OA3 Expansion Diagram.
- Fig 12-10: Offer & Accept Button Operation (Flashing is indicated by radial lines around a button).
- Fig 12-11: RB-OA3 LSO Expansion Connector Definitions.
- Fig 12-12: RB-OA3 LSO Expansion Connector Details.
- Fig 12-13: RB-OA3 Mix Input Connector Definitions.
- Fig 12-14: RB-OA3 Mix Input Connector Details.
- Fig 12-15: RB-OA3 Transmission I/O Connector Definitions.
- Fig 12-16: RB-OA3 Transmission Outputs Connector Details.
- Fig 12-17: RB-OA3 Studio 1-3 Audio Connector Definitions.
- Fig 12-18: RB-OA3 Studio 1-3 Audio Connector Details.
- Fig 12-19: RB-OA3 Studio 1-3 Control Connector Definitions.
- Fig 12-20: RB-OA3 Switch & Lamp Control Details.
- Fig 12-21: RB-OA3 Profanity Delay Control Connector Definitions..
- Fig 12-22: RB-OA3 Profanity Delay Control Connector Details.
- Fig 12-23: RB-OA3R Front Panel.
- Fig 12-26: RB-OA3R Pin Out Definitions.
- Fig 12-27: RB-OA3R Pin Out Positions.
- Fig 13-1: XLR Connectors.
- Fig 13-2: RCA Phono Connector.
- Fig 13-3: ¼” Jack Connector.
- Fig 13-4: 25 Way D-Type Connectors.
- Fig 13-5: 15 Way D-Type Connectors.
- Fig 13-6: 9 Way D-Type Connectors.
- Warranty
- Safety Information
- 1 RB-SS10 10 Way Stereo Analogue Source Selector/Mixer
- Technical Specifications RB-SS10
- 2 RB-DSS10 10 Way Stereo Digital Source Selector
- Technical Specifications RB-DSS10
- 3 RB-PMX4 10 Input, 4 Output Analogue Preset Mixer
- Technical Specifications RB-PMX4
- 4 RB-SSML1 Mic/Line Source Selector with Compressor Limiter
- Technical Specifications RB-SSML1
- 5 RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers
- Technical Specifications RB-MA1 & RB-MA2
- 6 RB-DMA2 Dual Digital Microphone Amplifier
- Technical Specifications RB-DMA2
- 7 RB-ML2 Stereo Microphone & Line Level Limiter
- Technical Specifications RB-ML2
- 8 RB-SL2 Twin Mono, or Stereo, Limiter
- Technical Specifications RB-SL2
- 9 RB-SM1 Single & RB-SM2 Dual Stereo To Mono Converter
- Technical Specifications RB-SM1 & RB-SM2
- 10 RB-LC3 3 Way Light/Power Controller
- Technical Specifications RB-LC3
- 11 RB-MM1 Mix Minus Generator
- Technical Specification RB-MM1
- 12 RB-OA3 3 Studio On-Air Switcher
- Introduction
- System Block Diagram
- Rear Panel Connections and Operation
- Installation Guide for the RB-OA3
- Configuring for OperationThe RB-OA3 can be used in both single (MASTER) and multiple expansion modes.
- Single (MASTER) Mode When used as a single (MASTER) unit, the RB-OA3 is used to switch 3 stereo busses between 3 studios, allowing them to share the same transmission path and peripheral devices such as hybrids or profanity delays. A single unit must always be configured as a MASTER unit.
- Serial PortsConnect the serial ports of the MASTER and BUS EXPANSION SLAVE units together using a standard RJ45 network cable (not a cross-over cable).Studio & Bus (4 Unit) Expansion
- Indications – How The LEDS Are Used
- Operational Modes
- Rear Panel Connections & Operation
- Technical Specification RB-OA3
- RB-OA3R Remote Switch Panel For RB-OA3
- Technical Specification RB-OA3R
- RB-OA3C Expansion Unit Cable Kit For RB-OA3
- Technical Specification RB-OA3C
- 13 Connectors & Cabling
- 14 Glossary
46
Redbox User Handbook No 3
MICROP HONE AMPLIF IERS
& LIMITERS
MICROPHONE AMPLIFIERS & LIMITERS - RB-ML2
7
Mic / Line Inputs
The XLR 3 pin sockets used for the mic/line inputs are electronically balanced. They have the
following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
Mic Input Gain
Recessed pre-set potentiometers allow for adjustment of the gain of the microphone
inputs. This provides a gain range of +22dB to +67dB which enables the use of dynamic and
powered microphones. Connect the mic input and adjust the gain until the line output is at
the level that you need.
Fig 7-4: Switch to Control LF Filter and Phantom Power.
Using Phantom Powered Microphones
For the mic input channel there are independent switches to provide phantom power at
+48V to the connected microphones. With phantom power selected, a voltage of +48V is
applied to pins 2 and 3 of the XLR connector to power the microphone, supplied through
6k8 resistors giving a current of 14mA. Phantom power is used when the switch is pointing
towards the arrow. The phantom power only applies when the input is set to mic mode.
Using the LF Filter
A switch also provides control for a high pass lter with low frequency roll o at 125Hz. The
lter is in when the switch is in the down position (towards the arrow). The lter only applies
when the input is set to mic mode.
Mic / Line Outputs
The XLR 3 pin plug output connector is electronically balanced and can be wired
unbalanced by grounding the non-phase signal, allowing you to feed balanced and
unbalanced equipment. It has the following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
The connector provides a line level output with an impedance of <50Ω in line mode and
150Ω in mic mode, with a maximum output level of -18dBu(mic) or +28 dBu(line).
On On
On On
2 3 4
1
1 Channel 1 Low Frequency (LF) Filter
2 Channel 1 Phantom Power
3 Channel 2 Phantom Power
4 Channel 2 Low Frequency