The OctoPre is an ideal “expansion” unit for adding eight more inputs to an existing audio interface such as other members of the Focusrite Clarett range. The Clarett OctoPre is a bidirectional unit: it is also equipped with ADAT format digital inputs and balanced analogue outputs. It incorporates an ADAT-to-LINE mode, making it the perfect interface for routing tracks from your DAW to an analogue mixing console.
Box Contents Along with your Clarett OctoPre you should have: • AC mains cable with IEC connector The User Guide (in English, French, German and Spanish) can be downloaded from https://global.focusrite.com/downloads Hardware Features Front Panel The front panel includes all operational controls, metering for all channels and two input sockets for mic, line or instruments.
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(Channels 1 to 8) remain routed to the ADAT digital outputs. The mode in use is stored in memory so that it is retained when the unit is switched off. 13. POWER – AC power switch and green LED. 14. Rack ears for mounting the Clarett OctoPre in a standard 19” equipment rack.
Rear Panel 22 22 The remainder of the Clarett OctoPre’s inputs and outputs are on the rear panel. 15. INPUTS 3 to 8 – 6 x “Combo XLR” connectors; note that the inputs for Channels 3 to 8 do not have INST mode, but are otherwise identical to those for Channels 1 and 2.
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Output 1 ‘cold’ (-) Output 1 Gnd 21. WORD CLOCK OUT – a BNC connector carrying the Clarett OctoPre’s word clock; this may be used to synchronise other digital audio equipment forming part of the recording system. The source of sample clock synchronisation is selected by the SYNC switch [10].
Line Outputs By connecting the line outputs of the Clarett OctoPre to the analogue line inputs of a mixing console (or any other device), the unit can be used either as a purely analogue, 8-channel microphone pre- >...
Digital Outputs Use the OPTICAL OUT ADAT port(s) [18] to connect the Clarett OctoPre to the ADAT input(s) of an audio device using TOSLINK optical cable(s). The ports can transmit eight channels of audio at 44.1 kHz or 48 kHz sample rate via a single optical cable.
Use the SAMPLE RATE switch [9] to select the desired frequency. It is essential that the sample rate selected on the Clarett OctoPre matches the sample rate set on the transmitting digital device. AIR mode An important feature of all models in the Clarett range is the new design of analogue preamplifier.
8 chs. Ch. 8 This mode enables the Clarett OctoPre be used to connect an 8-channel ADAT format output (from a DAW, for example) to a set of analogue inputs, typically the channels of an analogue mixing console, to permit such a mixer to be used to mix down DAW tracks.
Clock set to Internal via Focusrite Control Here OPTICAL OUT on the Clarett OctoPre is connected to OPTICAL IN on a Focusrite Clarett 8PreX audio interface with a single optical cable. Both units are running at 44.1kHz sample rate. The OctoPre’s clock source is set to WORD, and its WORD CLOCK IN input is connected to WORD CLOCK...
Clarett OctoPre with analogue mixing desk Clarett OctoPre ANALOGUE MIXING DESK This setup uses the Clarett OctoPre’s mic pre-amplifiers and AIR mode to provide a high quality “front end” for an analogue mixing desk. Use an 8-way loom to connect the OctoPre’s LINE OUT...
The Clarett 8PreX would normally be the sync master in this situation, so its clock source is set to INTERNAL (via Focusrite Control). The clock source on both Clarett OctoPres is set to ADAT, so both are synchronised to the Clarett 8PreX via the ADAT optical connections.
Clarett OctoPre was in use. The above channel counts are applicable at 44.1/48 kHz sample rate, providing that a Clarett 8PreX is used as the primary interface. Using Clarett OctoPre’s inserts to record drums Clarett 8Pre Clock set to ADAT using Focusrite Control...
Physical and Electrical Characteristics Analogue Inputs 1 & 2 “Combo XLR” sockets on front panel; for Line use ¼” TRS Connectors jack, for Inst use ¼” TS jack. Mic/Line switching Automatic Line/Instrument switching via front 2 x front panel switches Phantom power +48 V, switchable Chs.
COPYRIGHT AND LEGAL NOTICES Focusrite is a registered trade mark and Clarett OctoPre is a trade mark of Focusrite Audio Engineering Limited. All other trade marks and trade names are the property of their respective owners.
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