Studio Technologies 770 - Manual (Page 21)

Model 770 User Guide Issue 1, October 1997
Studio Technologies, Inc. Page 21
Model 770
in the mains cord conform to the interna-
tionally recognized CEE color code and
should be wired accordingly:
Connection
Wire Color
Neutral (N) Light Blue
Live (L) Brown
Earth/Ground (E) Green/Yellow
Because the Model 770 contains no power
switch it will begin operating as soon as
AC mains power is connected.
Configuration
As in life, power leads to responsibility.
The Model 770 is no exception as its
features, flexibility, and operational power
leads to a number of configuration issues
that must be reviewed once installation
has been completed. All are quite simple
and will only need to be addressed once.
Configurable Outputs
The Model 770 contains three configurable
outputs. Their uniqueness may make them
seem a bit confusing at first glance. How-
ever, they aren’t too “far out,” simply be-
ing electronically balanced output circuits
whose input source is selectable, rather
than being fixed. The hardest part of using
the configurable outputs is deciding which
audio source, or sources, should be
assigned to which output! By carefully
reviewing the choices, and how their
selection may benefit an installation, the
power of these humble outputs should
become apparent. These three outputs
may well eliminate the need for external
distribution amplifiers, combining amplifi-
ers, or microphone preamplifiers.
Units configured for 220/240V operation
are supplied with a 0.1A, 5 x 20mm fast-
acting fuse.
Before connecting the Model 770 to mains
power, determine the actual mains voltage
and confirm that the Model 770 has been
configured correctly. As could be ex-
pected, an incorrect mains configuration
could seriously damage the unit. Should it
be necessary to change the unit’s operat-
ing voltage contact Studio Technologies
technical support for details.
The Model 770 uses an IEC standard
connector to mate with the AC mains cord.
Normally the cord supplied has a North-
American standard plug on one end and
an IEC connector on the other. In non-
North American applications the appropri-
ate plug must be attached. The wire colors
Figure 3. Detail of back panel showing mains
power and voltage configuration chart