P. 8
AUDIOLAB EQ-2231 -
English version
Wiring Connections With Ground
circuit
ground
circuit
ground
Output
Cable
Output
Cable
Input
Cable
Input
Cable
chassis
ground
chassis
ground
to system
ground
optional
optional
jumper
6. INSTALLATION CONSIDERATIONS
Hookups and Cabling:
The EQ-2231 are designed
for n4dBu levels. The equalizers can be
used with either balanced or unbalanced sources,
and the outputs can be used with either balanced
or unbalanced loads, provided the proper cabling
is used.
A balanced line is defined as two-conductor
shielded cable with the two center conductors
carrying the same signal but of opposite polarity
when referenced to ground. An unbalanced line is
generally a single-conductor shielded cable with
the center conductor carrying the signal and the
shield at ground potential.
Input Cable Configurations:
The equalizer has
an input impedance of 40kS balanced and 20kcl
unbalanced. This makes the EQ-2231 audio inputs
suitable for use with virtually any low source im-
pedance (under 2kQ).
Output Cable Configurations:
The equaliz-
er's output is capable of driving a 6000 load to
+18dBu. For maximum hum rejection with a bal-
anced source, avoid common grounding at the
equalizer's inputs and outputs. Most balanced
(3-conductor) cables have the shield connected
at both ends. This can result in ground loops
which cause hum. If hum persists try discon-
necting the shield on one or more of the cables
in the system, preferably at the input of a device,
not at the output.
