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18
2. Using the optical connections
In addition to eight analogue inputs, the Clarett+ 8Pre has an ADAT input port (OPTICAL IN) which can
provide an additional eight audio inputs at 44.1/48 kHz sample rate, or four at 88.2/96 kHz. Using a
separate 8-channel microphone preamplifier equipped with an ADAT output – such as the Focusrite
Clarett+ OctoPre – provides a simple and excellent method of expanding the Clarett+ 8Pre’s input
capability.
AC ONLY 100-240V~ 50/60Hz 30W
WORD CLOCK
IN
OUT
LINE OUTPUTS
8
7
6
5
4
3
MIC/LINE INPUTS
CET APPAREIL DOIT ETRE MIS A LA TERRE PAR LE CORDON D’ALIMENTATION
THIS EQUIPMENT MUST BE EARTHED BY THE POWER CORD
WARNING /
AVERTISSEMENT
IN
OUT
ADAT
INSERT 8
INSERT 7INSERT 6
INSERT 5
INSERT 4
INSERT 3
192
3-4
1-2
965-8 1-4
48 1-8
2
1
INSERT 1/2TIP = SEND RING = RETURN
R
Computer running DAW
and Focusrite Control
Inputs 1 & 2 on front panel
Optical ADAT connection (TOSLINK)
Optional Word Clock link
Inputs 1 & 2 on front panel
Up to 16 Mic/Line Sources
Clarett+ Octopre
8ch Mic Amp
Clarett+ 8Pre
USB
The Clarett+ OctoPre’s OPTICAL OUT port is connected to the Clarett+ 8Pre’s OPTICAL IN port with
a single TOSLINK optical cable. Stable word clock synchronisation may be achieved by connecting
the Clarett+ 8Pre’s WORD CLOCK output to the Clarett+ OctoPre’s WORD CLOCK IN and setting
the Clarett+ OctoPre to use this as its sync source. Alternatively, the Clarett+ 8Pre may be set to
synchronise via the ADAT format signal at the OPTICAL IN port. To do this in Focusrite Control go to
Device Settings and set Clock Source to ADAT.
NOTE: when connecting two digital devices by any method, always ensure both are set to use the
same sample rate.
You can route additional ADAT inputs in the same way as other inputs in Focusrite Control. ADAT
inputs can form part of any musician’s headphone mix, as needed.
If a suitable D-to-A converter with an ADAT input is available, the OPTICAL OUT port may be used
in the opposite manner; for example, additional outputs from the DAW may be converted into the
analogue domain to allow the use of an external hardware mixing console to mix down a large
number of DAW tracks.
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