Analogue Redbox User Handbook RB-MA1 RB-MA2 RB-SM1 RB-SM2 RB-UL1 RB-UL2 RB-UL4 Single microphone amplifier Dual microphone amplifier Single stereo to mono converter Dual stereo to mono converter Single unbalanced to balanced converter Dual unbalanced to balanced converter Quad unbalanced to balanced converter RB-LU4 Quad balanced to balanced converter RB-BL2 RB-BL4 Single stereo bi-directional matching converter Dual stereo bi-directional matching converter RB-SL2 Twin mono, or stereo, limiter RB-DA
Revision 1.92 June, 2004 ©Sonifex Ltd, 2000-4. All Rights Reserved Sonifex Ltd, 61, Station Road, Irthlingborough, Northants, NN9 5QE, England. Tel : +44 (0)1933 650 700 Fax : +44 (0)1933 650 726 Email : sales@sonifex.co.uk or technical.support@sonifex.co.uk Web : http://www.sonifex.co.uk Information in this document is subject to change without notice and does not represent a commitment on the part of Sonifex Ltd.
Contents Contents Warranty, Safety & Installation Information....................... i Warranty Information ..........................................................i Returning the Warranty Card ............................................... ii Safety of Mains Operated Redbox Equipment ........................ iii Preparing the Machine for Use .......................................... iii Equipment Safety ........................................................... iii Voltage Setting Checks............
Contents 2.4.2. Connections ....................................................... 2-4 2.4.3. Equipment Type.................................................. 2-4 2.4.4. Physical Specifications ......................................... 2-4 3. RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced To Balanced Converters ........................... 3-1 3.1 Introduction.............................................................. 3-1 3.2 System Block Diagram .............................................
Contents 5.4.3. Equipment Type ..................................................5-5 5.4.4. Physical Specification ...........................................5-5 6. RB-SL2 Twin Mono, or Stereo, Limiter ......................... 6-1 6.1. Introduction .............................................................6-1 6.2. System Block Diagram...............................................6-2 6.3. Rear Panel Connections and Operation .........................6-3 6.3.1. Outputs ..................................
Contents 8.4.4. Local/Remote Control Operation ............................ 8-3 8.4.5. Remote Connector............................................... 8-4 8.5. Technical Specifications ............................................. 8-4 8.5.1. Audio Specifications............................................. 8-4 8.5.2. Connections ....................................................... 8-4 8.5.3. Equipment Type.................................................. 8-4 8.5.4. Physical Specifications .............
Contents 10.4.5. Restore Button ................................................ 10-7 10.4.6. Additional Modes ............................................. 10-7 10.5. Technical Specifications ......................................... 10-9 10.5.1. Audio Specifications ......................................... 10-9 10.5.2. Connections and Rear Panel Controls.................. 10-9 10.5.3. Front Panel Controls and Indicators .................... 10-9 10.5.4. Equipment Type ...................................
Contents 13.3. Rear Panel Connections and Operation ..................... 13-2 13.3.1. Inputs............................................................ 13-2 13.3.2. Outputs ......................................................... 13-2 13.3.3. Ground-link Internal Jumpers ............................ 13-3 13.4. Technical Specifications ......................................... 13-4 13.4.1. Audio Specification .......................................... 13-4 13.4.2. Connections.............................
Contents 15.3.5. Flash Rate Preset Potentiometer ........................ 15-6 15.4. Technical Specifications ......................................... 15-7 15.4.1. Connections.................................................... 15-7 15.4.2. Equipment Type .............................................. 15-7 15.4.3. Physical Specifications ...................................... 15-7 16. Glossary .................................................................. 16-1 17. Connectors And Cabling ..............
Contents Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Figures W-1: Mains Lead Table ................................................. iv W-2: RB-RK1(B) Small Redbox Front Rack-mount Kit ......... v W-3: RB-RK2 Small Redbox Rear Rack-mount Kit .............. v W-4: RB-RK3 Large Redbox Rear Rack-mount Kit .............. v 1-1: RB-MA1 & RB-MA2 Front Panel..............................
Contents Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig 9-1: RB-HD6 Front Panel.............................................9-1 9-2: RB-HD6 Block Diagram ........................................9-2 9-3: RB-HD6 Rear Panel..............................................9-3 9-4: RB-HD6 Front Panel.............................................9-5 10-1: RB-SD1 Front Panel ..................................
Contents Fig 17-3 : ¼” Jack Connector.......................................... 17-2 Fig 17-4 : 25 Way D-Type Connectors.............................. 17-2 Fig 17-5 : 15 Way D-Type Connectors..............................
Warranty, Safety & Installation Information Warranty, Safety & Installation Information Warranty Information Warranty and Liability - important the purchaser is advised to read this clause.
Warranty, Safety & Installation Information (e) At the request and expense of the Purchaser the Company will test the Goods to ascertain performance levels and provide a report of the results of that test. The report will be accurate at the time of the test, to the best of the belief and Knowledge of the Company, and the Company accepts no liability in respect of its accuracy beyond that set out in Condition (a).
Warranty, Safety & Installation Information Safety of Mains Operated Redbox Equipment Preparing the Machine for Use Each Redbox is shipped in protective packaging and should be inspected for damage before use. Where an item is found to have transit damage, notify your supplier immediately with all the relevant details of the shipment. Packing materials should be kept for inspection.
Warranty, Safety & Installation Information Your Redbox, please contact your supplier, because an IEC connector is always supplied from the Sonifex factory.
Warranty, Safety & Installation Information Fitting Redboxes Redboxes can be fixed to the underside of a mixing desk, or other surfaces using 2 off No. 6 countersink screws. They can also be rack-mounted, with either the front, or rear of the Redbox positioned at the front of the rack: Front Mounting Redboxes: For rack mounting smaller (28cm) units the optional RB-RK1 (Red) or RB-RK1B (Black) kit can be used (which include 4 off M6 panel fixing screws).
Warranty, Safety & Installation Information Wherever you see this symbol an RB-RK1 front panel rack kit can be used : Wherever you see this symbol an RB-RK2 small Redbox rear panel 19” rack kit can be used : Wherever you see this symbol an RB-RK3 large Redbox rear panel 19” rack kit can be used : Note: When fitting the rear-mounting rack-kits, a notch has been left on the inside of the right-hand rack-piece for the mains cable to pass through.
Chapter 1 - RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers 1. RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers 1.1. Introduction Fig 1-1: RB-MA1 & RB-MA2 Front Panel The RB-MA1 consists of an independent low-noise microphone pre-amplifier for converting microphone level signals to line level, or for driving long lines from microphones to mixing equipment. The RB-MA2 dual microphone amplifier consists of two low noise pre amplifiers. All connections and controls are on the rear panel.
Chapter 1 - RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers 1.2. System Block Diagram Ultra low noise high gain amplifier Balanced Microphone Input L.F. filter Professional balanced output Gain L.F. Filter in/out Phantom supply on/off 48V Phantom power (48V) Fig 1-2: RB-MA1 & RB-MA2 Block Diagram Single Channel 1.3. Rear Panel Connections and Operation 1.3.2 1.3.3 OUTPUT MIC INPUT PHANTOM POWER ON GAIN LF FILTER ON Disconnect the mains supply before removing the equipment covers. 1.3.1 1.
Chapter 1 - RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers 1.3.1. Mic Inputs The XLR 3 pin sockets used for the microphone are electronically balanced. They have the following connections: Pin 1: Screen Pin 2: Phase Pin 3: Non-phase 1.3.2. Input Gain Recessed pre-set potentiometers allow for adjustment of the gain of the microphone inputs. This provides a gain range of 36dB to 75dB which enables the use of dynamic and powered microphones.
Chapter 1 - RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers 1.4. Technical Specifications 1.4.1. Audio Specifications Maximum Input Level: Maximum Output Level: Input Impedance: Output Impedance: Low Frequency Roll-Off: Gain Range: E.I.N: Distortion: Common Mode Rejection: Phantom Power: Frequency Response: -10dBu +28dBu 20kΩ nominal balanced <50Ω 125Hz @ 6dB/octave Adjustable 36dB to 75dB gain 130dB 0.01% THD @ 1kHz, ref +8dBu output >66dB typically 48V 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) 1.4.
Chapter 2 - RB-SM1 Single & RB-SM2 Dual Stereo to Mono Converter 2. RB-SM1 Single & RB-SM2 Dual Stereo To Mono Converter …… 2.1. Introduction Fig 2-1: RB-SM1 & RB-SM2 Front Panel The RB-SM1 consists of an independent converter that will produce a fully buffered and balanced mono line output from a stereo input. The RB-SM2 consists of two independent converters and will produce two fully buffered and balanced mono line outputs from two stereo inputs. All connections are on the rear panel.
Chapter 2 - RB-SM1 Single & RB-SM2 Dual Stereo to Mono Converter 2.2. System Block Diagram Left Summing amplifier Professional balanced stereo input Professional balanced mono output Gain Right Fig 2-2: RB-SM1 & RB-SM2 Block Diagram Single Channel 2.3. Rear Panel Connections and Operation L - INPUT - R MONO OUTPUT LEVEL 115V - 230V Disconnect the mains supply before removing the equipment covers.
Chapter 2 - RB-SM1 Single & RB-SM2 Dual Stereo to Mono Converter 2.3.1. Stereo Inputs 1 (& 2) The input’s are a stereo pair consisting of two XLR 3 pin sockets electronically balanced with an impedance of 20kΩ bridging. They can be wired unbalanced to accept an output from domestic equipment. They have the following connections: Pin 1: Screen Pin 2: Phase Pin 3: Non-phase 2.3.2. Mono Output 1 (& 2) The XLR 3 pin mono output connectors are electronically balanced with an output impedance of <50Ω.
Chapter 2 - RB-SM1 Single & RB-SM2 Dual Stereo to Mono Converter 2.4. Technical Specifications 2.4.1. Audio Specifications Maximum Input Level: Maximum Output Level: Input Impedance: Output Impedance: Frequency Response: Gain Range: Common Mode Rejection: Distortion: Noise: +28dBu +28dBu >20kΩ balanced bridging <50Ω balanced 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) Adjust 8dB loss to 18dB gain, ref 0dB input on L and R >66dB typically 0.
Chapter 3 - RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced to Balanced Converters 3. RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced To Balanced Converters 3.1 Introduction Fig 3-1: RB-UL1 & RB-UL2 Front Panel RB-UL4 QUAD UNBAL - BAL CONVERTER Fig 3-2: RB-UL4 Front Panel The RB-UL1 single, RB-UL2 dual & RB-UL4 quad stereo units are used for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels. All connections are on the rear panel.
Chapter 3 - RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced to Balanced Converters 3.2 System Block Diagram Input -L consumer unbalanced Phono Professional balanced output -L Gain Input -R consumer unbalanced Phono Professional balanced output -R Gain Fig 3-3: RB-UL1 Block Diagram For a Single Channel 3.3 Rear Panel Connections and Operation 3.3.3 INPUT L - OUTPUT - R L LEVEL R 115V - 230V Disconnect the mains supply before removing the equipment covers. 3.3.
Chapter 3 - RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced to Balanced Converters 3.3.1 INPUT 1 3.3.3 INPUT 2 L - OUTPUT 1 - R L INPUT 3 L - OUTPUT 2 - R L LEVEL R R INPUT 4 L - OUTPUT 3 - R L LEVEL L - OUTPUT 4 - R L LEVEL R LEVEL R Disconnect the mains supply before removing the equipment covers. This product must be earthed 3.3.2 Fig 3-6: RB-UL4 Rear Panel 3.3.1.
Chapter 3 - RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced to Balanced Converters 3.4 Technical Specifications 3.4.1. Audio Specifications Maximum Input Level: Input Impedance: Output Impedance: Maximum Output Level: Distortion: Noise: Common Mode Rejection: Frequency Response: Gain Range: +28dBu >10kΩ <50Ω +28dBu 0.01% THD @ 1kHz ref +8dB output -100dB unity gain, ref +8dB output >66dB typically 20Hz to 20kHz ±0.
Chapter 4 - RB-LU4 Quad Stereo Balanced to Unbalanced Converter 4. RB-LU4 Quad Stereo Balanced To Unbalanced Converter …… 4.1. Introduction RB-LU4 QUAD BAL-UNBAL CONVERTER Fig 4-1: RB-LU4 Front Panel The RB-LU4 is a quad stereo unit for interfacing professional balanced equipment to domestic, or semi-pro unbalanced line levels. All connections are on the rear panel.
Chapter 4 - RB-LU4 Quad Stereo Balanced to Unbalanced Converter 4.2.
Chapter 4 - RB-LU4 Quad Stereo Balanced to Unbalanced Converter 4.3. Rear Panel Connections and Operation L - INPUT 1 - R OUTPUT 1 L - INPUT 2 - R OUTPUT 2 L LEVEL R OUTPUT 3 L - INPUT 3 - R L LEVEL OUTPUT 4 L - INPUT 4 - R L LEVEL R L LEVEL R Disconnect the mains supply before removing the equipment covers. R This product must be earthed Fig 4-3: RB-LU4 Rear Panel 4.3.1.
Chapter 4 - RB-LU4 Quad Stereo Balanced to Unbalanced Converter 4.4. Technical Specifications 4.4.1. Audio Specifications Maximum Input Level: Input Impedance (XLR): Output Impedance (RCA): Maximum Output Level: Distortion: Noise: Common Mode Rejection: Frequency Response: Gain Range: +28dBu >20kΩ balanced bridging <50Ω +22dBu 0.01% THD @ 1kHz, ref +8dBu output -100dB, unity gain, ref +8dBu output >66dB typically 20Hz to 20kHz ±0.
Chapter 5 - RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter 5. RB-BL2 Single & RB-BL4 Dual BiDirectional Matching Converter 5.1. Introduction Fig 5-1: RB-BL2 Front Panel RB-BL4 DUAL BI-DIRECTIONAL CONVERTER Fig 5-2: RB-BL4 Front Panel The RB-BL2 is a bi-directional stereo unit for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels, and vice-versa. The RBBL4 has dual bi-directional stereo capability. All connections are on the rear panel.
Chapter 5 - RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter 5.2.
Chapter 5 - RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter 5.3. Rear Panel Connections and Operation 5.3.1.3 L - INPUT 1 - R 5.3.2.3 OUTPUT 1 INPUT 2 L - OUTPUT 2 - R L LEVEL LEVEL R 115V - 230V Disconnect the mains supply before removing the equipment covers. 5.3.1.1 5.3.1.2 5.3.2.1 This product must be earthed 5.3.2.
Chapter 5 - RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter 5.3.1. Balanced to Unbalanced Connections 5.3.1.1. Inputs 1 (& 3) (Left & Right) The XLR 3 pin sockets used for the left and right channel signals of Input 1 / 1 & 3 are electronically balanced and have an impedance of 20kΩ bridging. They are routed to an unbalanced RCA (phono) outputs with an output impedance of <50Ω. Each XLR has the following connections: Pin 1: Screen. Pin 2: Phase. Pin 3: Non-phase. 5.3.1.2.
Chapter 5 - RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter 5.4. Technical Specifications 5.4.1. Audio Specifications Maximum Input Level: Maximum Output Level: Input Impedance (RCA): Input Impedance (XLR): Output Impedance (RCA): Output Impedance (XLR): Distortion: Noise: Common Mode Rejection: Frequency Response: Gain Range: Gain Range: Inputs: 5.4.2.
Chapter 5 - RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter 5-6 Redbox User Handbook
Chapter 6 - RB-SL2 Twin Mono, or Stereo, Limiter 6. RB-SL2 Twin Mono, or Stereo, Limiter 6.1. Introduction Fig 6-1: RB-SL2 Front Panel The RB-SL2 is a stereo, or twin independent mono, VCA limiter for use in news-rooms and other locations where the correct level into recording equipment is required, but not necessarily under the control of an engineer, for example, for overload protection.
Chapter 6 - RB-SL2 Twin Mono, or Stereo, Limiter 6.2.
Chapter 6 - RB-SL2 Twin Mono, or Stereo, Limiter 6.3. Rear Panel Connections and Operation OUTPUT 1 INPUT 1 INPUT 2 OUTPUT 2 STEREO GAIN DUAL MONO GAIN MODE LIMIT LEVEL LIMIT LEVEL Disconnect the mains supply before removing the equipment covers. SERIAL No. Fig 6-3: RB-SL2 Rear Panel 6.3.1. Outputs The XLR 3 pin plug connectors are electronically balanced and can be wired unbalanced to accept an output from domestic equipment.
Chapter 6 - RB-SL2 Twin Mono, or Stereo, Limiter 6.4. Technical Specifications 6.4.1. Audio Specifications Maximum Input Level: Maximum Output Level: Input Impedance: Output Impedance: Input Gain: Limit Threshold: Frequency Response: Noise: Distortion: +28dBu +28dBu >20kΩ bridging <50Ω Adjustable -8dBu to +18dBu gain Adjustable -8dBu to +28dBu 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) -100dB unity gain, ref +8dBu 0.
Chapter 7 - RB-DA6 6 Way Stereo Distribution Amplifier 7. RB-DA6 6 Way Stereo Distribution Amplifier 7.1. Introduction MONO RB-DA6 L MONO R STEREO DISTRIBUTION AMPLIFIER Fig 7-1: RB-DA6 Front Panel The RB-DA6 is a high performance 6 way stereo analogue audio distribution amplifier for splitting a source to a number of different outputs. The RB-DA6 has 1 stereo input and 6 stereo outputs. It can also be configured so that 1 mono input can be distributed to 12 outputs.
Chapter 7 - RB-DA6 6 Way Stereo Distribution Amplifier 7.2.
Chapter 7 - RB-DA6 6 Way Stereo Distribution Amplifier 7.3. Rear Panel Connections and Operation L - INPUT - R MONO 7.3.1 L - OUTPUT 1 - R 1 2 L - OUTPUT 2 - R 3 4 L - OUTPUT 3 - R 5 6 L - OUTPUT 4 - R L - OUTPUT 5 - R L - OUTPUT 6 - R 7 8 9 10 11 Disconnect the mains supply before removing the equipment covers. 115V - 230V 12 This product must be earthed 7.3.2 Fig 7-3: RB-DA6 Rear Panel 7.3.1.
Chapter 7 - RB-DA6 6 Way Stereo Distribution Amplifier 7.4.2. Stereo/Mono Operation The mode of operation may be switched between a stereo distributed channel to 6 stereo channels, and a mono channel to 12 mono channels, by the push button on the front panel which is recessed to prevent accidental switching. 7.5. Technical Specifications 7.5.1.
Chapter 8 - RB-HD1 Stereo Headphone Amplifier 8. RB-HD1 Stereo Headphone Amplifier 8.1. Introduction HEADPHONE VOLUME RB-HD1 HEADPHONE AMPLIFIER Fig 8-1: RB-HD1 Front Panel The RB-HD1 is a 1U rack-mount stereo headphone amplifier for driving up to two pairs of professional stereo headphones from a single stereo or mono input. One headphone socket is on the front panel with one on the rear.
Chapter 8 - RB-HD1 Stereo Headphone Amplifier 8.2. System Block Diagram Fig 8-2: RB-HD1 Block Diagram 8.3. Front Panel Connections and Controls HEADPHONE VOLUME RB-HD1 HEADPHONE AMPLIFIER Fig 8-3: RB-HD1 Front Panel 8.3.1. Stereo Outputs 1-2 (Mono Outputs1-2) The outputs available on the front and rear panel through ¼” stereo jack sockets are push-pull, designed to drive 150 mW into 32Ω to 600Ω professional headphones. Each output is individually buffered. 8.3.2.
Chapter 8 - RB-HD1 Stereo Headphone Amplifier 8.4. Rear Panel Connections and Operation L - INPUT - R MONO MIX INPUT HEADPHONE STEREO MONO LEVEL LOCAL REMOTES REMOTES Disconnect the mains supply before removing the equipment covers. This product must be earthed Fig 8-4: RB-HD1 Rear Panel 8.4.1.
Chapter 8 - RB-HD1 Stereo Headphone Amplifier 8.4.5. Remote Connector The remote connector is a 9-pin D-type socket, which is situated on the rear panel. It has connections as shown below. Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin No. 1 2 3 4 5 6 7 8 9 Signal Pot wiper Pot top N/C N/C N/C Pot bottom N/C MIX_EN 0V I/O I O I - Description Volume control signal +5V No connection No connection No connection Ground No connection Make to pin 9 Ground Fig 8-5 RB-HD1 Remote Connector 8.5.
Chapter 9 - RB-HD6 6 Way Stereo Headphone Distribution Amplifier 9. RB-HD6 6 Way Stereo Headphone Distribution Amplifier …… 9.1. Introduction 1 2 3 4 RB-HD6 5 6 MASTER LEVEL HEADPHONE DISTRIBUTION AMPLIFIER + Fig 9-1: RB-HD6 Front Panel The RB-HD6 is a high performance 6-way stereo headphone distribution amplifier for driving up to 6 pairs of professional stereo headphones from a single stereo or mono input.
Chapter 9 - RB-HD6 6 Way Stereo Headphone Distribution Amplifier 9.2. System Block Diagram Note: Insert/Parallel stereo jacks are jumper selectable for Insert Input or Parallel Output.
Chapter 9 - RB-HD6 6 Way Stereo Headphone Distribution Amplifier 9.3. Rear Panel Connections and Operation 9.3.1 L INPUT 9.3.2 R INSERT POINTS STEREO 6 5 4 3 2 1 MONO Disconnect the mains supply before removing the equipment covers. This product must be earthed 9.3.3 Fig 9-3: RB-HD6 Rear Panel 9.3.1.
Chapter 9 - RB-HD6 6 Way Stereo Headphone Distribution Amplifier 9.3.3.2. Configuring Insert Inputs or Parallel Outputs On the main circuit board, you’ll see some jumpers (small black rectangles), the position of which will define whether a particular jack socket operates as an input or output. The drawings below show the different jumper settings available. Each input/output can be configured individually, so you could have three jacks set as inputs and three as outputs if needed.
Chapter 9 - RB-HD6 6 Way Stereo Headphone Distribution Amplifier 9.4. Front Panel Connections and Controls 9.4.3 1 RB-HD6 9.4.2 2 3 4 5 6 MASTER LEVEL HEADPHONE DISTRIBUTION AMPLIFIER + 9.4.1 Fig 9-4: RB-HD6 Front Panel 9.4.1. Stereo Outputs 1-6 (Mono Outputs 1-6) The outputs available on the front panel through ¼” stereo jack sockets are push-pull, designed to drive 150 mW into 32Ω to 600Ω professional headphones. Each output is individually buffered. 9.4.2.
Chapter 9 - RB-HD6 6 Way Stereo Headphone Distribution Amplifier 9.5. Technical Specifications 9.5.1. Audio Specifications Input Impedance: >20kΩ balanced bridging (main), >10kΩ unbalanced override Maximum Input Level: +28dBu Output Level: Drives 150 mW into 32Ω to 600Ω headphones Override Inputs: +3dBu for full volume at +18dB gain Individual Volume Control:-60dB to +18dB gain Master Volume Control: ±10dB gain 9.5.2.
Chapter 10 - RB-SD1 Silence Detection Unit 10. RB-SD1 Silence Detection Unit 10.1.
Chapter 10 - RB-SD1 Silence Detection Unit Front panel LED indicators show individually left and right programme and alarm conditions for both the main and auxiliary inputs. The status of the source, mode and alarm state are also shown on the front panel with LED indicators. Additionally, the RB-SD1 can be programmed for specific applications, which can be defined on power-up of the unit. Contact Sonifex for further information if you have a particular requirement.
Chapter 10 - RB-SD1 Silence Detection Unit 10.3. Rear Panel Connections and Operation 10.3.4 L - INPUT A - R L - INPUT B - R 10.3.6 L - OUTPUT - R LEVEL TIME MODE REMOTE ALARMS Disconnect the mains supply before removing the equipment covers. 10.3.1 10.3.2 This product must be earthed 10.3.3 10.3.5 Fig 10-3: RB-SD1 Rear Panel 10.3.1. A/B Inputs (Left and Right) There are four XLR-3 inputs, two for channel A (Left & Right) and another two for channel B (Left & Right).
Chapter 10 - RB-SD1 Silence Detection Unit 10.3.5. Mode Dip Switch Settings 1. Stereo/Mono. ON 2. Remote Start Mode Switch. 1 2 3 OFF 4 3. Professional levels/Consumer levels (Input B). 4. Switch/No switching when alarmed. 1. Stereo/Mono Switch – The configuration of this defines whether you want to switch sources when left and/or right channel of the incoming source go silent.
Chapter 10 - RB-SD1 Silence Detection Unit 10.3.6. Remotes Connector Displayed below are the pin connections and descriptions for the remote connector: Pin No. Pin 1 Pin 2 Pin Pin Pin Pin 3 4 5 6 Signal Master Alarm Normally Open Master Alarm Normally Closed Aux. Alarm Normally Open Aux.
Chapter 10 - RB-SD1 Silence Detection Unit 10.4. Front Panel Selectors and Indicators 10.4.2 AUX MAIN RB-SD1 LEFT SILENCE DETECT PROG ALARM RIGHT PROG ALARM LEFT PROG ALARM RIGHT PROG LED ON MAIN A LED OFF MAIN B LED FLASH ALARM 10.4.3 AUTO MANUAL PRESS RESTORE SOURCE 10.4.1 MODE ALARM NORMAL RESTORE 10.4.4 Fig 10-4: RB-SD1 Front Panel 10.4.1.
Chapter 10 - RB-SD1 Silence Detection Unit 10.4.3. Main and Aux indicators On the front panel there are four Main indicators and four Aux indicators. Each left/right channel has a Program Content and Alarm Status indicator. The Program Content Indicator represents the input signal level for that channel and the Alarm Status LED indicates when the channel has dropped below the threshold for longer than the time selected.
Chapter 10 - RB-SD1 Silence Detection Unit This alarm state is continued until the RESTORE pin opens to the DIGITAL GROUND pin. After this the unit will switch back to the main input when audio is present. NOTE: When operating in manual mode, restoration of output from the main input is only available via the front panel restore switch. All other functions operate as normal.
Chapter 10 - RB-SD1 Silence Detection Unit 10.5. Technical Specifications 10.5.1. Audio Specifications Maximum Input Level: Input Impedance: Maximum Output Level: Output Impedance: Frequency Response: Gain: Noise: Distortion: +28dBu > 100kΩ balanced +28dBu As input, except when using unbalanced auxiliary input where output impedance < 50Ω 20Hz to 20kHz ±0.1dB +12dB (for unbalanced input B – optional) <-87dB, unity gain, ref +8dBu output for unbalanced input. As input for balanced input, <0.
Chapter 10 - RB-SD1 Silence Detection Unit 10-10 Redbox User Handbook
Chapter 11 - RB-PMX4 10 Input, 4 Output Analogue Preset Mixer 11. RB-PMX4 10 Input, 4 Output Analogue Preset Mixer RB-PMX4 1 2 3 INPUT LEVEL 4 5 6 7 8 9 10 PRE-SET MIXER Fig 11-1: RB-PMX4 Front Panel 11.1. Introduction The RB-PMX4 is a high performance 10 mono input to 4 mono output preset mixer. Each of the four outputs has a 10 way DIP switch associated with it to select which of the 10 inputs are routed to it.
Chapter 11 - RB-PMX4 10 Input, 4 Output Analogue Preset Mixer 11.2.
Chapter 11 - RB-PMX4 10 Input, 4 Output Analogue Preset Mixer 11.3. Rear Panel Connections and Operation 10 9 8 7 6 INPUTS 5 4 3 2 1 4 3 OUTPUTS 2 1 115V - 230V This product must be earthed Disconnect the mains supply before removing the equipment covers. 11.3.2 11.3.1 Fig 11-3: RB-PMX4 Rear Panel 11.3.1.
Chapter 11 - RB-PMX4 10 Input, 4 Output Analogue Preset Mixer 11.4.2. Input Gain Controls The gain for each input may be individually varied from –8dB to 18dB by adjusting the pre-set potentiometers, which are accessible through the holes in the front panel. This is useful for normalising consumer and professional signals to give outputs of – 15dBu and 0dBu respectively. 11.5. Technical Specifications 11.5.1.
Chapter 12 - RB-LI2 Stereo Line Isolation Unit 12. RB-LI2 Stereo Line Isolation Unit 12.1. Introduction Fig 12-1: RB-LI2 Front Panel The RB-LI2 stereo line isolation unit is used to isolate audio signals from inter area ground hum loops, which could be caused by equipment being powered by different mains power supplies, or different phases on the same supply. The input and output are connected together through a transformer, which has internal jumpers allowing the outputs to be balanced about ground.
Chapter 12 - RB-LI2 Stereo Line Isolation Unit 12.3. Rear Panel Connections and Operation 12.3.1 12.3.2 ISOLATED OUTPUT 1 LEVEL LOOP OUTPUT 1 ISOLATED OUTPUT 2 INPUT 1 LOOP OUTPUT 2 INPUT 2 LEVEL 115V - 230V Disconnect the mains supply before removing the equipment covers. This product must be earthed 12.3.3 12.3.4 Fig 12-3: RB-LI2 Rear Panel 12.3.1. Inputs There are 2 input XLR 3 pin sockets. They have the following connections: Pin 1: Screen Pin 2: Phase Pin 3: Non-phase 12.3.2.
Chapter 12 - RB-LI2 Stereo Line Isolation Unit 12.3.4. Output Level Adjustment The isolated outputs can be individually adjusted using pre-set potentiometers, which are accessible through the rear panel. The gain range of the stereo line isolation unit is -15dB to +13.5dB (28.5dB). 12.3.5. Internal Jumpers The unit has jumpers that are used to balance the output about ground. By default these are not fitted when the unit leaves the factory.
Chapter 12 - RB-LI2 Stereo Line Isolation Unit 12.4. Technical Specifications 12.4.1. Audio Specification Output Impedance: Frequency Response: Common Mode Rejection: Distortion: Noise: Gain Range: <150Ω 10Hz to 36kHz ±0.5dB <64dB 0.5% THD @ 40Hz, ref +17dBu output -100dB unity gain ref +8dB -15dB to +13.5dB (28.5dB) 12.4.2. Connections Inputs: Isolated Outputs: Loop Outputs: 2 x XLR 3 pin female 2 x XLR 3 pin male 2 x XLR 3 pin male 12.4.3. Equipment Type RB-LI2: Stereo Line Isolation Unit 12.4.4.
Chapter 13 - RB-PLI6 6 Way Mono Passive Line Isolation Unit 13. RB-PLI6 6 Way Mono Passive Line Isolation Unit 13.1. Introduction Fig 13-1: RB-PLI6 Front Panel The RB-PLI6 6 way mono passive line isolation unit is used to isolate audio signals from inter area ground hum loops, which could be caused by equipment being powered by different mains power supplies or phases on the same supply.
Chapter 13 - RB-PLI6 6 Way Mono Passive Line Isolation Unit 13.3. Rear Panel Connections and Operation 13.3.2 13.3.1 Fig 13-3: RB-PLI6 Rear Panel 13.3.1. Inputs There are 6 off XLR 3 pin socket inputs. They have the following connections: Pin 1: Screen Pin 2: Phase Pin 3: Non-phase 13.3.2. Outputs There are 6 off XLR 3 pin plug outputs.
Chapter 13 - RB-PLI6 6 Way Mono Passive Line Isolation Unit 13.3.3. Ground-link Internal Jumpers The unit has jumpers that are used to balance either the input, or the output, about ground. By default these are not fitted when the unit leaves the factory. To get inside the RB-PLI6, observing anti-static precautions, undo the four crosshead screws on the back panel at the far left and far right of the panel (2 at each end).
Chapter 13 - RB-PLI6 6 Way Mono Passive Line Isolation Unit 13.4. Technical Specifications 13.4.1. Audio Specification Output Impedance: Distortion: Common Mode Rejection: Frequency Response: <150Ω 0.5% THD @ 40Hz, ref +17dBu output <64dB typically 10Hz to 36kHz ±0.5dB 13.4.2. Connections Inputs: Outputs: 6 x XLR 3 pin female (balanced) 6 x XLR 3 pin male (balanced) 13.4.3. Equipment Type RB-PLI6: 6 Way Mono Passive Line Isolation Unit 13.4.4.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14. RB-SS10 10 Way Stereo Analogue Source Selector/Mixer …… 14.1. Introduction 1 2 3 4 5 6 7 8 9 10 HEADPHONES LEVEL RB-SS10 ANALOGUE SOURCE SELECT Fig 14-1: RB-SS10 Front Panel The RB-SS10 10 Way Stereo Analogue Source Selector/Mixer is a 1U rack-mount unit that produces a stereo analogue audio output from 10 selectable stereo analogue sources.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.2.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.3. Front Panel Indicators & Controls 14.3.2 1 2 3 4 5 6 7 8 9 10 H EA DP HO NES LEVEL 14.3.4 14.3.5 RB-SS10 ANALOGUE SOURCE SELECT 14.3.1 14.3.3 Fig 14-3: RB-SS10 Front Panel 14.3.1. Illuminated Push Buttons The front panel contains 10 illuminated push buttons, used for selecting an analogue source. The push button illuminates when the input is selected.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.4. Rear Panel Connections and Operation L OUTPUT R L INPUT 1 R L INPUT 2 R 14.4.4 14.4.6 INPUTS 3 - 6 REMOTE SELECT & SWITCH INPUTS INPUTS 7 - 10 STATUS OUTPUTS ENABLE DISABLE 14.4.2 14.4.3 REMOTE START I / O 115V - 230V OUTPUT LEVEL CONTROL Disconnect the mains supply before removing the equipment covers. 14.4.7 14.4.1 This product must be earthed 14.4.5 Fig 14-4 : RB-SS10 Rear Panel 14.4.1.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.4.4. RB-SS10 Additional Audio Input Connectors There are 2 off 25 way D-type sockets (female) used for the remaining audio inputs. The INPUTS 3 - 6 (upper) connector contains analogue inputs 3-6, and the INPUTS 7 – 10 (lower) connector contains analogue inputs 7-10. Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin No.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.4.5. RB-SS10 Remote Start I/O This 25 way D-type plug (male) connector contains the remote start input connection and the corresponding 10 opto-isolated remote start outputs. This is intended to be used as a method for re-directing a remote start command using a single switch or mixer fader start output, to selected equipment, i.e. CD player, or MD player, etc.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.4.6. Remote Select/Switch Inputs This 25 way D-type socket (female) connector contains the front panel inhibit input connection and the remote switch inputs to control the channel selection. Pin No.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.4.7. Status Outputs This 25 way D-type socket (female) connector contains the remote status tallies. Pin Pin Pin Pin Pin Pin Pin No.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14.5. Technical Specifications 14.5.1. Audio Specifications Input Impedance: Output Impedance: Maximum Input Level: Maximum Output Level: Frequency Response: Input Gain Range: Common Mode Rejection: Noise: Max Headphone Output Level: Inputs: +12dBu 14.5.2. Connections Outputs: Remote Start I/O: Remote Select/ Switch Inputs: Status Outputs: Mains Input: RB-SS10: 20kΩ bridging <50Ω +28dBu +28dBu 20Hz to 20kHz ±0.
Chapter 14 - RB-SS10 10 Way Stereo Analogue Source Selector/Mixer 14-10 Redbox User Handbook
Chapter 15 - RB-LC3 3 Way Light/Power Controller 15. RB-LC3 3 Way Light/Power Controller 15.1. Introduction Fig 15-1: RB-LC3 Front Panel The RB-LC3 is a triple output switching unit for controlling external mains indicators, primarily studio status lights for broadcasting applications, such as On-Air, Mic-Live and Rehearsal/Live lights.
Chapter 15 - RB-LC3 3 Way Light/Power Controller 15.2.
Chapter 15 - RB-LC3 3 Way Light/Power Controller 15.3. Rear Panel Connections and Operation 15.3.3 REMOTES SETTINGS MAINS OUTPUT 1 MAINS OUTPUT 2 MAINS OUTPUT 3 1 2 3 MAINS OUTPUT 1 MAINS OUTPUT 2 FLASH RATE LINE HANDSET MAINS OUTPUT 3 ON 15.3.2 15.3.4 15.3.1 15.3.5 Fig 15-3: RB-LC3 Rear Panel 15.3.1. Switched Mains Outputs The 3 off IEC connectors provide the switched mains outputs. Each output is rated at 1A and is individually fused. A neon indicator shows when the output is live.
Chapter 15 - RB-LC3 3 Way Light/Power Controller 15.3.4. Configuration Switches The configuration switches are used to set the flash mode for each output separately. The selections allow the outputs to be controlled by a remote input, a telephone call, or a combination of remote inputs, say, for example to control 2 lights such as “Rehearsal” and “Live”, using Settings 10-13. The configuration switches are also used to select the operating mode, either latching or momentary, for each output.
Chapter 15 - RB-LC3 3 Way Light/Power Controller The available settings for output 2, configured using switches Sw5 to Sw8, are detailed below: Setting No 1 Sw5 Off 2 3 4 5 6 7 8 9 10 Sw6 Sw7 Sw8 Off Off Off On Off On Off On Off On Off On Off On On Off Off On On Off Off Off Off Off On On On On Off Off Off Off Off Off Off Off Off On On 11 Off On Off On 12 On On Off On 13 Off Off On On 14 15 16 On Off On Off On On On On On On On On Description Flash Output 2 when telephone ri
Chapter 15 - RB-LC3 3 Way Light/Power Controller The available settings for output 3, configured using switches Sw9 to Sw12, are detailed below: Setting No 1 Sw9 Sw10 Sw11 Sw12 Off Off Off Off 2 3 4 5 6 7 8 9 10 On Off On Off On Off On Off On Off On On Off Off On On Off Off Off Off Off On On On On Off Off Off Off Off Off Off Off Off On On 11 Off On Off On 12 On On Off On 13 Off Off On On 14 15 16 On Off On Off On On On On On On On On Description Flash Output 3 when telepho
Chapter 15 - RB-LC3 3 Way Light/Power Controller 15.4. Technical Specifications 15.4.1. Connections Mains Input: Non-filtered IEC, 110V-240V auto-adjusting, fused, 6W maximum Mains Outputs: 3 x Non-filtered IEC plugs, 1A fused Telephone: 2 x RJ11-4 sockets Control Inputs & Outputs: 15 way D-type plug Inputs: 0V– 5V DC Outputs: Open Collector 20mA sink capability 15.4.2. Equipment Type RB-LC3: 3 way light/power controller 15.4.3.
Chapter 15 - RB-LC3 3 Way Light/Power Controller 15-8 Redbox User Handbook
Chapter 16 - Glossary 16. Glossary 1kHz ADSL 1000Hz or 1 kilohertz Tone of 1kHz is often used for line-up and testing. Asynchronous Digital Subscriber Link - a broadband delivery system over standard telephone lines (between the exchange and the user). AES Audio Engineering Society. AES/EBU Professional digital audio standard covering frame format, connections and interfaces. Interface is usually on XLR sockets and plugs.
Chapter 16 - Glossary dB (decibel) DCF DDS & DI DLS DSP EBU EIN ENG EON EQ FM G3 Gain GRAM HDLC Hybrid IEC ISDN Kbps kHz LAN 16-2 A ratio of two voltages or signal levels, expressed by the equation dB=20LOG(V1/V2) Adding the suffix "u" denotes that the signal is relative to 0.775V RMS. Adding the suffix "v" denotes that the signal is relative to 1V RMS.
Chapter 16 - Glossary LCD LED LNB MCR MDU MF Liquid Crystal Display (grey displays e.g. on calculators). Light Emitting Diode (small lights e.g. on computers). Low Noise Block - the RF amplifier attached to a satellite dish. See racks room. Mains Distribution Unit - a panel of mains outlets for power distribution. Medium Frequency - another name for Medium Wave - roughly frequencies between 300kHz and 3MHz. MHz Mega-hertz - One million cycles per second.
Chapter 16 - Glossary RDS Reverb RF RJ-45 S/PDIF Radio Data System. An echo (in very basic terms). Radio Frequency. A connection standard used in computer networking. Sony/Phillips Digital Interface. Domestic digital audio interface standard using phono connectors or optically using fibre-optic connectors. SPL Sound Pressure Level. TA Traffic Announcement (flag) - a means of signalling to a radio with FM RDS indicating that traffic/travel news is being broadcast. T/B Talk-back (and reverse talk-back).
Chapter 17 - Connectors and Cabling 17. Connectors And Cabling Many of the problems associated with installing and maintaining studio equipment are due to the use of poor cables or faulty connections. It is recommended that, wherever possible, pre-wired cables are purchased from recommended manufacturers. If you need bespoke cables making, please ensure that a qualified engineer carries out the work. The main types of connectors used with the Redboxes are the following: 17.1.
Chapter 17 - Connectors and Cabling 17.3. ¼” Jack Connector The following diagram shows the connection details for the jack connector: 1/4" 'A' Gauge Stereo Jack Plug Tip - Hot ( In Phase ) Signal Ring - Cold ( Out Of Phase ) Signal Sleeve - Ground ( Screen ) Signal 1/4" 'A' Gauge Stereo Jack Plug used for Headphones Tip - Left Signal Ring - Right Signal Sleeve - Ground ( Screen ) Signal Fig 17-3 : ¼” Jack Connector 17.4.
Index Index E A Alarm Indicators RB-SD1, 10-7 Atmosphere, iv Automatic Mode RB-SD1, 10-6 Earthing, iii EIN RB-MA1, 1-4 Electromagnetic Radiation, iv F B Block Diagram RB-SM1, 2-2 RB-SM2, 2-2 C Cabling, 17-1 Channel Volume RB-HD1, 8-2 RB-HD6, 9-5 Common Mode Rejection RB-BL2, 5-5 RB-DA6, 7-4, 14-9 RB-LU4, 4-4 RB-PMX4, 11-4 RB-SL2, 6-4 RB-SM1, 2-4 RB-UL1, 3-4 Configuration Switches RB-LC3, 15-4 Connectors, 17-1 D Flash Rate Preset potentiometer RB-LC3, 15-6 Front Panel Connections and Controls RB-DA6,
Index RB-HD1, 8-2 RB-HD6, 9-5 RB-LU4, 4-3 RB-MA1, 1-3 RB-MA2, 1-3 RB-PMX4, 11-4 RB-SL2, 6-3 RB-SM1, 2-3 RB-SM2, 2-3 I Impedances RB-BL2, 5-5 RB-DA6, 7-4, 14-9 RB-HD1, 8-4 RB-HD6, 9-6 RB-LU4, 4-4 RB-MA1, 1-4 RB-PMX4, 11-4 RB-SL2, 6-4 RB-SM1, 2-4 RB-UL1, 3-4 Input Gain RB-DA6, 7-3 RB-MA1, 1-3 RB-MA2, 1-3 RB-PMX4, 11-4 RB-SL2, 6-3 Inputs RB-BL2, 5-4 RB-DA6, 7-3 RB-HD1, 8-3 RB-HD6, 9-3 RB-LI2, 12-2 RB-LU4, 4-3 RB-PLI6, 13-2 RB-PMX4, 11-3 RB-SD1, 10-3 RB-SL2, 6-3 RB-SM1, 2-3 RB-SM2, 2-3 RB-SS10, 14-4 Internal J
Index RB-HD6, 9-6 RB-LC3, 15-7 RB-LI2, 12-4 RB-LU4, 4-4 RB-MA1, 1-4 RB-MA2, 1-4 RB-PLI6, 13-4 RB-PMX4, 11-4 RB-SD1, 10-9 RB-SL2, 6-4 RB-SM1, 2-4 RB-SM2, 2-4 RB-SS10, 14-9 RB-UL1, 3-4 Mono Mix Input RB-HD1, 8-3 Mono Outputs RB-SM1, 2-3 RB-SM2, 2-3 N Noise RB-BL2, 5-5 RB-DA6, 14-9 RB-LU4, 4-4 RB-SL2, 6-4 RB-SM1, 2-4 Power Connection, iv R O RCA Phono Connectors, 17-1, 17-2 Output Gain RB-BL2, 5-4 RB-LU4, 4-3 RB-SM1, 2-3 RCA Phono Inputs RB-BL2, 5-4 RB-LU4, 4-3 RB-UL1, 3-3 RB-UL2, 3-3 RB-UL4, 3-3 Outp
Index RB-UL4, 3-3 Remote Connector RB-SD1, 10-5 Restore Button RB-SD1, 10-7 Roll-Off Filters RB-MA1, 1-3 S Source Select RB-SD1, 10-6 Stereo/Mono Operation RB-DA6, 7-4 RB-HD1, 8-3 RB-HD6, 9-3 Stereo/Mono Outputs RB-DA6, 7-3 RB-HD1, 8-2 RB-HD6, 9-5 RB-HD1, 8-2 RB-HD6, 9-2 RB-LC3, 15-2 RB-LI2, 12-1 RB-LU4, 4-2 RB-MA1, 1-2 RB-MA2, 1-2 RB-PLI6, 13-1 RB-PMX4, 11-2 RB-SD1, 10-2 RB-SL2, 6-2 RB-SS10, 14-2 RB-UL1, 3-2 RB-UL2, 3-2 RB-UL4, 3-2 T Time Control RB-SD1, 10-3 V Switch Banks RB-PMX4, 11-3 System Block
