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Psychologist Mixer User Manual
Audio Input and Output Connections
Each input and output channel uses a triplet Phoenix connector. The three wires within each signal
line must be connected to the Phoenix connector as shown below. For ease of wiring each connector
can be removed from the chassis by pulling it straight out.
Ground
Minus (–)
Plus (+)
The Phoenix connectors can only be attached to the Matrix receptacles in one orientation. However,
the Matrix receptacle is a strip rather than individual sites, so a plug can be connected to three pins
which are not a set. Take extra care when connecting to blocks in which not all the pins will be used.
The Matrix cannot control a signal line when the connections are not made correctly.
Input connections are made to the blocks on the left of the Matrix unit. Inputs are any line-level
source and must be connected in ascending numerical order, from left to right, as printed on the
Matrix.
Output connections are made to the blocks on the right hand side of the Matrix unit. Line level
outputs are connected in ascending numerical order, from left to right, as printed on the Matrix.
Grounding the Minimixer
In high static environments, it may be necessary to add local grounds to Psychologist minimixers.
This is most easily done at installation time, so if you suspect that you will have high static condi-
tions such as thick carpet or other static causing conditions, you should locally ground your
minimixers at the time of installation. Every minimixer in the system should be grounded in this
way. Local grounding is accomplished by connecting pin 8 of the minimixer cable to the nearest
local ground.
Psychologist Mixer User Manual
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