Output modules
The outputs of the X-Amp Series power amplifiers are also de-
signed for easy matching different requirements.
A color-code table provides information about internal output
wiring. When exchanging modules or re-wiring the output connec-
tors, e. g. when using system-cables, inadvertent erroneous con-
nection is virtually impossible. As shipped from the factory, X-Amp
Series power amplifiers are equipped with Xo-1 modules.
Xo-1 output module
The Xo-1 output module provides SPEAKON-type connectors.
When factory-shipped these connectors are assigned to 1+ and
1-; as shown in the diagram. With the X 1201 Single Channel
power amplifier both output connectors are parallel-connected.
GROUND-LIFT switch
This switch separates the enclosure electrically from the ground
potential which helps in preventing “hum-loops”. Hum-loops result
from several devices being connected to a mutual ground potential
via mains plugs and, at the same time, when installed in a
rack-system via direct metal contact or through the screen of
connected LF-signal lines. Whenever the power amplifier is instal-
led in a 19" rack system being operated together with other
equipment, the recommended setting of the switch is the GROUN-
DED position. If the power amplifier is used together with applian-
ces that are connected to different ground potentials, the
recommended setting is UNGROUNDED.
Grounding screw
The grounding screw is located next to the ground-lift switch and
is meant for the connection of an “earth bar”. Whenever several
devices are installed in a rack-system, they should be connected
to a common ground, since their lacquered front panels may avert
sufficient galvanic inter-connection between the enclosures.
REAR VIEW
21
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