Sonifex Redbox Range
	Sonifex "Redbox" - In Depth Information
	The new Sonifex "Redbox" Range consists of various inexpensive interconnection boxes for use in various applications for radio stations, TV studios, video and recording studios. These units are housed in red anodized aluminium boxes which can be screw mounted or rack mounted. All connections and controls are on the rear panel.
	Matching Converters
	RB-UL1 The RB-UL1 is an Unbalanced to Balanced Single Converter for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels.
	RB-UL2 The RB-UL2 is a Dual Unbalanced to Balanced Converter for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels.
	RB-UL4 The RB-UL4 is a Quad Unbalanced to Balanced Converter stereo unit for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels.
	RB-BL2 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.
	RB-BL4 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.
	RB-LI2 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.
	RB-PLI6 The RB-PLI6 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. The input and output are connected together through a transformer, and the unit has internal jumpers allowing the inputs and/or outputs to be balanced about ground. The unit requires no mains power for operation. This unit is useful where audio is required to be driven over a relatively long length of cable. By isolating the signal using transformers, ground loop currents which can be present in non-isolated signals, are eradicated completely.
	RB-PA2 The RB-PA2 is a dual stereo RIAA equalised phono amplifier. This record player preamp amplifies the small signal from your pick up cartridge (either moving magnet or high output moving coil magnetic) and provides the necessary RIAA equalisation required for vinyl records, to match it to a line input of your mixer, or amplifier. It uses a clean RIAA response making it ideal for use with broadcast turntables and DJ decks and where vinyl records are being archived to CD for high quality transfers, or for converting albums to mp3.

	Mixers & Source Selectors
	RB-SS10 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. There are 10 illuminated front panel push buttons, which select and indicate the current channel selection. The selection and indication is also available through a remote connector on the rear panel. To stop accidental front panel selection there is a remote input to inhibit the front panel buttons.
	RB-DSS10 The RB-DSS10 Digital Source Selector is a 1U rack-mount which produces an AES/EBU and S/PDIF level digital audio output from 10 selectable AES/EBU or S/PDIF digital input signals. There are 10 illuminated front panel push buttons, which select and indicate the current channel selection. The selection and indication is also available through a remote connector on the rear panel. To stop accidental front panel selection there is a remote input to inhibit the front panel buttons.
	RB-PMX4 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. So, by altering the DIP switches, any of the input sources can be mixed to any of the outputs. The DIP switches are enclosed by a screw-on cover on the front panel so that the settings can not be accidently changed for secure applications.

	Headphone Distribution Amplifiers
	RB-HD1 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.
	RB-HD6 The RB-HD6 headphone distribution amplifier is a 1U rack-mount which distributes stereo audio to up to 6 different sets of headphones, or can be used as 6 independent headphone amplifiers, each with their own input and volume control. A typical application might be to provide common headphone feeds for guests in a radio studio, with a separately derived feed, perhaps including talk-back, for the presenter.
	RB-DHD6 The RB-DHD6 digital 6 way headphone distribution amplifier is a 1U rack-mount which receives a digital input signal, as either AES/EBU or S/PDIF and converts it to 6 individually buffered, jack-plug, headphone outputs, each with their own volume control. Useful for connection to digital mixing desks, digital routers and matrices, the RB-DHD6 connects directly to an AES/EBU or S/PDIF output to provide the highest quality audio directly to the headphones.

	Microphone Amplifiers
	RB-MA1 The RB-MA1 consists of a low noise microphone pre-amplifier for converting mic level signals to line level, or for driving long lines from microphones to mixing equipment.
	RB-MA2 The RB-MA2 consists of two independent low-noise microphone pre-amplifiers for converting mic level signals to line level, or for driving long lines from microphones to mixing equipment.
	RB-DMA2 The RB-DMA2 consists of two independent low-noise microphone pre-amplifiers for converting microphone level signals to a digital AES/EBU or S/PDIF output. Individual analogue balanced line level outputs are also produced for use, for example, to feed talkback systems. The unit can either be used as two independent microphone amplifiers, or one mic input can be copied to both channels of the digital output.

	Stereo To Mono Converters
	RB-SM1 The RB-SM1 consists of a single stereo converters which will produce a fully buffered and balanced mono line output from a stereo input.
	RB-SM2 The RB-SM2 consists of two independent converters which will produce two fully buffered and balanced mono line outputs from two stereo inputs.

	General Interfaces
	RB-LC3 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. Each output can be individually controlled by one of three remote inputs (pulled high, or low), by a telephony input (when ringing, or off-hook, or both), or a combination of two inputs (to control two outputs, e.g. for Rehearsal/Live situations). The type of control is set using the 12 way DIP switch (4 switches for each output, allowing 16 different settings).
	RB-SD1 The RB-SD1 Silence Detection Unit is used to monitor an unattended stereo studio feed and in the event of the signal going 'quiet' after a given period the unit will switch through an alternative stereo audio signal. This signal could be a recorded message (e.g. normal service will be resumed. etc), a feed from a CD player or MiniDisk machine, or an alternative recorded program. Controls are provided to start external equipment and to provide remote status indication. The RB-SD1 has a passive signal path so that it will still allow a signal to be transmitted in the event of a power failure.
	RB-SL2 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. It can also be used as an inexpensive main output limiter for small scale radio stations, hospital radio and student radio.

	Digital Audio Converters
	RB-ADDA The RB-ADDA A/D and D/A converter is a 1U rack-mount which produces an AES/EBU or S/PDIF level digital audio output from a balanced XLR or unbalanced phono stereo audio input. It also produces a stereo balanced XLR or unbalanced phono output from an incoming AES/EBU or S/PDIF digital input signal.
	RB-SC1 Ideal for the transfer of digital audio between different digital equipment, the RB-SC1 sample rate converter standardises the sample rate of a digital audio signal to one of 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz or 96kHz, or to a synchronising input.
	RB-DAC1 Using 24 bit, 96kHz capable devices, the RB-DAC1 D/A Converter is a 1U rack-mount which produces a stereo balanced XLR or unbalanced phono output from an incoming AES/EBU or S/PDIF digital input signal. There is also a headphone output with volume control for monitoring purposes.
	RB-SP1 The RB-SP1 Digital Splitter & Combiner is a 1U rack-mount unit used to interface various double sampling pieces of equipment. Some older equipment uses 2 AES/EBU connectors for double sampling with each connector carrying an audio signal at a normal frame rate, whilst other equipment has a single connector using twice the frame rate. The RB-SP1 can interface between them, either combining the signals from 2 XLR's into 1, or splitting the signal from 1 XLR into 2.

Sonifex Redbox Rack Mount Kits
RK1 The RB-RK1 rack mount kit can be attached to the front of the smaller Redbox products so that they can be rack mounted into a standard 19 inch rack unit.
RK2 The RB-RK2 rack mount kit can be attached to the rear of the smaller Redbox products so that they can be rack mounted into a standard 19 inch rack unit.
RK3 The RB-RK3 rack mount kit can be attached to the rear of the larger Redbox products so that they can be rack mounted into a standard 19 inch rack unit.

Sonifex Redbox Range - Features

All are equipped with IEC mains lead and instruction manual. All are screw mountable as standard and are either rack-mounted or have the option to be rack-mounted. In-house design and manufacture ensures high quality control standards. They are manufactured as either 115V 60Hz or 230V 50Hz and all have a front panel LED power indicator. Manufactured within ISO9000 standards and guaranteed CE compliant. Housed in eye catching red anodised aluminium cases. All the Redboxes are screw mountable as standard and are either rack-mounted or have the option to be rack-mounted. The RB-RK rack mount kits can be attached to the front or the rear of the Redbox products so that they can be rack mounted into a standard 19 inch rack frame in 1U of space. CLICK BELOW FOR MORE INFORMATION Related Links: > View the Sonifex Redbox Brochure (PDF)

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