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4. Using the optical connections to provide additional outputs
The Clarett 8PreX’s two ADAT output ports (OPTICAL OUT) may be used to feed separate D-A
converters to provide additional analogue outputs. The Focusrite OctoPre MkII DYNAMIC is a suitable
8-channel unit for this purpose. As with the optical inputs, each optical output can carry 8 audio
channels at 44.1/48 kHz sample rate, four at 88.2/96 kHz or two at 176.4/192 kHz. This is an excellent
method of providing multiple analogue outputs to feed a mixing console, which may be a preferred
way of performing a complex mix from a large number of DAW tracks.
Wordclock between
both OctoPre devices
and Clarett 8PreX
is via ADAT links.
Optical ADAT (TOSLINK) Optical ADAT
(TOSLINK)
OctoPre MKII
Dynamic
e MKII
Dynamic
Computer running DAW
and Focusrite Control
Thunderbolt
TM
Up to 26 Analogue Outputs
In the example, the OPTICAL IN 1-8 ports of the two OctoPre MkII DYNAMICs are connected to the
Clarett 8PreX’s OPTICAL OUT ports with two TOSLINK optical cables. The additional outputs thus
created may be routed within Focusrite Control in exactly the same manner as the other outputs.
In this situation, synchronisation is achieved by setting the Clarett 8PreX’s sync source to INT (thus
defining it as the sync master) and setting the sync source for both OctoPre MkII DYNAMICs to ADAT.
This means that all synchronisation is via the optical links and no additional cables are required.
NOTE: when interconnecting two digital devices by any method, always ensure that both are set to
use the same sample rate.
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