Sonifex Redbox Series User Handbook Manual
Single/dual/quad stereo unbalanced to balanced/balanced to unbalanced converters, single/dual bi-directional matching converter, dual stereo riaa phono amplifier, stereo line isolation unit
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Also See for Redbox Series:
- Introduction manual (62 pages) ,
- User handbook manual (136 pages) ,
- User handbook manual (68 pages)
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See also:
User Handbook Manual
Redbox
User Handbook No 3
RB-UL1 Single Stereo Unbalanced To Balanced Converters
RB-UL2 Dual Stereo UnbalancedTo Balanced Converters
RB-UL4 Quad Stereo Unbalanced To Balanced Converters
RB-LU4 Quad Stereo Balanced To Unbalanced Converter
RB-BL2 Single Bi-Directional Matching Converter
RB-BL4 Dual Stereo Bi-Directional Matching Converter
RB-PA2 Dual Stereo RIAA Phono Amplifier
RB-LI2 Stereo Line Isolation Unit
RB-PLI6 6 Way Mono Passive Line Isolation Unit
Manufacturers of audio & video
products for radio & TV broadcasters
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Summary of Contents for Sonifex Redbox Series
- Page 1 Redbox User Handbook No 3 RB-UL1 Single Stereo Unbalanced To Balanced Converters RB-UL2 Dual Stereo UnbalancedTo Balanced Converters RB-UL4 Quad Stereo Unbalanced To Balanced Converters RB-LU4 Quad Stereo Balanced To Unbalanced Converter RB-BL2 Single Bi-Directional Matching Converter RB-BL4 Dual Stereo Bi-Directional Matching Converter RB-PA2 Dual Stereo RIAA Phono Amplifier RB-LI2 Stereo Line Isolation Unit RB-PLI6 6 Way Mono Passive Line Isolation Unit...
- Page 2 Information in this document is subject to change without notice and does not represent a commitment on the part of the vendor. Sonifex Ltd shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual.
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Page 3: Table Of Contents
Rear Panel Connections and Operation Balanced to Unbalanced Connections Product Warranty - 2 Year Extended Unbalanced to Balanced Connections Sonifex Warranty & Liability Terms & Conditions Technical Specifications RB-BL2 1. Definitions 6 RB-BL4 Dual Stereo Bi-Directional Matching Converter 2. Warranty... - Page 4 Figures Figures Fig A: RB-RK1 Small Redbox Front Rack-mount Kit . Fig B: RB-RK2 Small Redbox Rear Rack-mount Kit. Fig C: RB-RK3 Large Redbox Rear Rack-mount Kit. Fig 1-1: RB-UL1 Front Panel Fig 1-2: RB-UL1 System Block Diagram Fig 1-3: RB-UL1 Rear Panel Fig 2-1: RB-UL2 Front Panel Fig 2-2: RB-UL2 System Block Diagram Fig 2-3: RB-UL2 Rear Panel...
- Page 5 Serial No: can increase your product warranty to 2 years and we can also keep you informed of any product design improvements or modifications. To register your product, please go online to www.sonifex.co.uk/register Sonifex Limited 61 Station Road Irthlingborough Northamptonshire...
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Page 6: Product Warranty - 2 Year Extended
‘the Contract’ means the quotation, these Conditions of Sale and any other document incorporated in a contract between the Company and the As standard, Sonifex products are supplied with a 1 year back to base Purchaser. warranty. In order to register the date of purchase and so that we can keep... -
Page 7: Unpacking Your Product
Warranty the defect has not arisen from a design made, furnished or At the request and expense of the Purchaser the Company will test specified by the Purchaser; 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 vii. -
Page 8: Repairs & Returns
Please note that all products are either switchable between 115V and 230V, or have a universal power supply. Repairs & Returns Please contact Sonifex or your supplier if you have any problems with your Fuse Rating Sonifex product. Email technical.support@sonifex.co.uk for the repair/ The product is supplied with a single fuse in the live conducting path of the upgrade/returns procedure, or for support &... -
Page 9: Weee Directive
All products manufactured by Sonifex Ltd have the WEEE directive label Connect the equipment in accordance with the connection details and placed on the case. Sonifex Ltd will be happy to give you information about before applying power to the unit, check that the machine has the correct local organisations that can reprocess the product when it reaches its “end... -
Page 10: Fig B: Rb-Rk2 Small Redbox Rear Rack-Mount Kit
Safety & Installation They can also be rack-mounted, with either the front, or rear of the Redbox positioned at the front of the rack (Note: this product is front rack-mounted as standard): 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). -
Page 11: Rb-Ul1 Single Stereo Unbalanced To Balanced Converters
Matching Converters - RB-UL1 1 RB-UL1 Single Stereo Unbalanced to Balanced Converters Introduction Fig 1-1: RB-UL1 Front Panel Rear Panel Connections and Operation The RB-UL1 single stereo unit is used for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels. RCA Phono Inputs (Left and Right) The stereo left and right RCA inputs are unbalanced and have an All connections are on the rear panel. -
Page 12: Technical Specifications Rb-Ul1
Matching Converters - RB-UL1 Stereo Output Level Adjustment Phono Inputs Outputs The output gain can be individually adjusted for left and right channels through pre-set potentiometers which are accessible through the rear panel. The gain range of the unbalanced to balanced converter is -15dBu to +15dBu ref -15dBu into the unbalanced input. -
Page 13: Rb-Ul2 Dual Stereo Unbalancedto Balanced Converters
Matching Converters - RB-UL2 2 RB-UL2 Dual Stereo Unbalanced to Balanced Converters Introduction Fig 2-1: RB-UL2 Front Panel The RB-UL2 dual stereo unit is used for interfacing domestic, or semi-pro Rear Panel Connections and Operation unbalanced equipment to professional balanced line levels. RCA Phono Inputs (Left and Right) All connections are on the rear panel. -
Page 14: Technical Specifications Rb-Ul2
Matching Converters - RB-UL2 Output Level Adjustment Output Level Adjustment The output gain can be individually adjusted for left and right channels through pre-set potentiometers which are accessible through the rear panel. The gain range of the unbalanced to balanced converter is -15dBu to +15dBu ref -15dBu into the unbalanced input. -
Page 15: Rb-Ul4 Quad Stereo Unbalanced To Balanced Converters
Matching Converters - RB-UL4 3 RB-UL4 Quad Stereo Unbalanced to Balanced Converters Introduction Fig 3-1: RB-UL4 Front Panel Rear Panel Connections and Operation The RB-UL4 quad stereo unit is used for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels. RCA Phono Inputs (Left and Right) The stereo left and right RCA inputs are unbalanced and have an impedance All connections are on the rear panel. -
Page 16: Technical Specifications Rb-Ul4
Matching Converters - RB-UL4 Phono Output Level Phono Output Level Phono Output Level Phono Output Level Input Adjustment Input Adjustment Input Adjustment Input Adjustment Stereo Stereo Stereo Stereo Balanced Balanced Balanced Balanced Outputs Outputs Outputs Outputs Fig 3-3: RB-UL4 Rear Panel Output Level Adjustment Connections The output gain can be individually adjusted for left and right channels... -
Page 17: Rb-Lu4 Quad Stereo Balanced To Unbalanced Converter
Matching Converters - RB-LU4 4 RB-LU4 Quad Stereo Balanced to Unbalanced Converter Introduction 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. The output gain can be individually adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel. -
Page 18: System Block Diagram
Matching Converters - RB-LU4 System Block Diagram Phono Left Input 1 Left Output 1 Professional/ Consumer/Unbalanced Balanced Gain Phono Right Input 1 Right Output 1 Professional/ Consumer/Unbalanced Balanced Gain Phono Left Input 2 Left Output 2 Professional/ Consumer/Unbalanced Balanced Gain Phono Right Input 2 Right Output 2... -
Page 19: Rear Panel Connections And Operation
Matching Converters - RB-LU4 Rear Panel Connections and Operation RCA Phono Outputs Stereo Balanced Inputs Output Level Adjustment Fig 4-3: RB-LU4 Rear Panel Technical Specifications RB-LU4 Inputs 1-4 (Left and Right) Audio Specifications are routed to an unbalanced RCA (phono) output with an output impedance Maximum Input Level: +28dBu Pin 1: Screen... - Page 20 Matching Converters - RB-LU4 Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC) Equipment Type RB-LU4: Quad stereo balanced to unbalanced converter Physical Specifications Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 19”...
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Page 21: Rb-Bl2 Single Bi-Directional Matching Converter
Matching Converters - RB-BL2 5 RB-BL2 Single Bi-Directional Matching Converter Introduction electronically balanced inputs have an impedance of Fig 5-1: RB-BL2 Front Panel The output gain can be individually adjusted for left and The RB-BL2 is a bi-directional stereo unit for interfacing domestic, or right channels by using pre-set potentiometers accessible semi-pro unbalanced equipment to professional balanced line levels, and through the rear panel. -
Page 22: Rear Panel Connections And Operation
Matching Converters - RB-BL2 Rear Panel Connections and Operation RCA Phono Outputs 1 (Left & Right) These RCA (phono) outputs are unbalanced and have an Unbalanced Output Balanced Output Level Level Adjustment Adjustment Output Level Adjustment The output gain can be individually adjusted for left and right channels through pre-set potentiometers which are accessible through the rear panel. -
Page 23: Technical Specifications Rb-Bl2
Matching Converters - RB-BL2 Technical Specifications RB-BL2 Equipment Type Audio Specifications RB-BL2: Single stereo bi-directional matching Maximum Input Level: +28dBu converter Maximum Output Level: +28dBu Physical Specification Dimensions (Raw): 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 11” (W) x 4.3” (D) x 1.7” (H) (1U) Dimensions (Boxed): 36cm (W) x 20.5cm (D) x 6cm (H) Distortion:... -
Page 24: Rb-Bl4 Dual Stereo Bi-Directional Matching Converter
Matching Converters - RB-BL4 6 RB-BL4 Dual Stereo Bi-Directional Matching Converter Introduction Fig 6-1: RB-BL4 Front Panel The RB-BL4 is a dual bi-directional stereo unit for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels, and vice-versa. System Block Diagram Phono Left Input 1 Left Output 1... -
Page 25: Rear Panel Connections And Operation
Matching Converters - RB-BL4 Rear Panel Connections and Operation Balanced Balanced Phono Phono Outputs Outputs Outputs Outputs Balanced RCA Phono Balanced RCA Phono Inputs Inputs Inputs Inputs Balanced Output Unbalanced Output Balanced Output Level Control Level Control Level Control Fig 6-3: RB-BL4 Rear Panel Balanced to Unbalanced Connections RCA Phono Outputs 1 &... -
Page 26: Unbalanced To Balanced Connections
Matching Converters - RB-BL4 Unbalanced to Balanced Connections Connections RCA Phono Inputs 2 & 4 (Left & Right) 4 x RCA phono (unbalanced) The left and right RCA inputs 2 & 4 are unbalanced and have an impedance 4 x RCA phono (unbalanced) Outputs 2 &... -
Page 27: Rb-Pa2 Dual Stereo Riaa Phono Amplifier
Matching Converters - RB-PA2 7 RB-PA2 Dual Stereo RIAA Phono Amplifier Introduction Fig 7-1: RB-PA2 Front Panel The RB-PA2 is a dual stereo RIAA equalised phono amplifier. This record been used together with low noise, fast acting operational amplifiers to player preamp amplifies the small signal from your pick up cartridge (either produce a superbly transparent signal path. -
Page 28: Rear Panel Connections And Operation
Matching Converters - RB-PA2 Rear Panel Connections and Operation Pick-up Output Pick-up Grounding Level Grounding Post Adjustments Post Stereo Stereo Phono Balanced Phono Balanced Inputs Outputs Inputs Outputs Fig 7-3: RB-PA2 Rear Panel Output Level Adjustment RCA Phono Inputs (Left and Right) The stereo left and right RCA inputs are unbalanced and have an impedance The output gain can be individually adjusted for left and right channels through pre-set potentiometers which are accessible through the rear... -
Page 29: Technical Specifications Rb-Pa2
Matching Converters - RB-PA2 Technical Specifications RB-PA2 Equipment Type Audio Specifications RB-PA2: Dual stereo phono amplifier and RIAA Maximum Input Level: +28dBu gram amplifier Input Sensitivity Range: 1mV to 25mV (ref 1kHz) Physical Specifications Maximum Output Level: +28dBu Dimensions (Raw): 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 11”... -
Page 30: Rb-Li2 Stereo Line Isolation Unit
Matching Converters - RB-LI2 8 RB-LI2 Stereo Line Isolation Unit Introduction Fig 8-1: RB-LI2 Front Panel. The RB-LI2 stereo line isolation unit is used to isolate audio signals from There is also a loop-through output, so that the RB-LI2 can be inserted into inter area ground hum loops, which could be caused by equipment being a line, forming a transformer balanced distribution point. -
Page 31: Rear Panel Connections And Operation
Matching Converters - RB-LI2 Rear Panel Connections and Operation Loop Outputs Each of the 2 inputs has a corresponding loop-through Isolated Isolated Pin 1: Screen Output Output Input Input Pin 2: Phase Pin 3: Non-phase Output Level Adjustment The isolated outputs can be individually adjusted using pre- set potentiometers, which are accessible through the rear panel. -
Page 32: Technical Specifications Rb-Li2
Matching Converters - RB-LI2 Fig 8-4: RB-LI2 Jumper Positions on the PCB Technical Specifications RB-LI2 Audio Specification Equipment Type RB-LI2: Stereo line isolation unit Frequency Response: 10Hz to 36kHz ±0.5dB Physical Specifications Common Mode Rejection:<64dB Distortion: 0.5% THD @ 40Hz, ref +17dBu output Dimensions (Raw): 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 11”... -
Page 33: Rb-Pli6 6 Way Mono Passive Line Isolation Unit
Matching Converters - RB-PLI6 9 RB-PLI6 6 Way Mono Passive Line Isolation Unit Introduction Fig 9-1: RB-PLI6 Front Panel The RB-PLI6 6 way mono passive line isolation unit is used to isolate audio This unit is useful where audio is required to be driven over a relatively signals from inter area ground hum loops, which could be caused by long length of cable. -
Page 34: Rear Panel Connections And Operation
Matching Converters - RB-PLI6 Rear Panel Connections and Operation Outputs Inputs Fig 9-3: RB-PLI6 Rear Panel Ground-link Internal Jumpers Inputs 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 connections: the factory. -
Page 35: Technical Specifications Rb-Pli6
Matching Converters - RB-PLI6 Technical Specifications RB-PLI6 Audio Specification Distortion: 0.5% THD @ 40Hz, ref +17dBu output Common Mode Rejection:<64dB typically Frequency Response: 10Hz to 36kHz ±0.5dB Connections Equipment Type RB-PLI6: 6 way mono passive line isolation unit Physical Specifications Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 19”... - Page 36 . s o n i f e x . c o . u k t:+44 (0)1933 650 700 f:+44 (0)1933 650 726 sales@sonifex.co.uk...
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