Orban 622B User Manual

ELECTRICAL
Connecting
the 622
Equalizer
to other
equipment is
quite straightforward.
INSTALLATION
Relatively
uncomplicated
systems (such
as home
playback systems,
"semi-pro"
recording
studios,
electronic music
studios,
dance bars,
etc.) tend to
come
together
without
serious
grounding problems
even if
the wiring
practices
are somewhat
casual,
provided
that high RF
fields are
not
present. Unusual
situations
can be
analyzed if
you are
familiar with
the standard
rules governing
grounding and
interfacing
between
balanced
and unbalanced
systems.
The
instructions
below will
apply
to
the
majority
of cases. A
comprehensive
discussion
of
interconnections
and
grounding can
be found in
the Appendix.
Input
The
electronically-balanced
input
of each
channel
of the 622
equalizer is
compatible with
most
professional and
semi-professional
sound
equipment,
balanced
or unbalanced,
whose
source impedance
is 600 ohms
or less.
If
it
is greater
(as in
some vacuum-tube
audiophile
preamps),
a minor
modification
may be made
to the
input
to accomodate
the situation.
Please refer
to the Appendix
for further
details.
Nominal
input
level
is between
-10
and +4dBm. The
absolute overload
point is
+26dBm.
Output
The
two
outputs
of each channel
of the 622 are
unbalanced
(unless fitted with
the
optional transformers),
and the
source impedance
is 47 ohms in
parallel
with
lOOOpF
to the
chassis
(for
RFI
suppression).
Wiring
the 622 With
Two-Conductor Shielded
Cable
We
recommend
wiring with
two-conductor
shielded
cable
(such as Belden
8451
or
equivalent)
because signal current
flows through
the two
conductors
only. The
shield
does
not carry
signal,
is
used
only
for shielding,
and is
ordinarily
connected
to
ground
at one
end
only.
The following
table
and diagram
are applicable
to
a great
majority
of
installations.
4

Orban 622B Specifications

General

Brand	Orban
Model	622B
Category	Stereo Equalizer
Language	English