Studio Technologies 55 2002 - Manual (Page 14)

Issue 4, June 2002 Model 55/56 User Guide
Page 14 Studio Technologies, Inc.
Meter Output
The meter output is intended to be con-
nected to a VU- or PPM-type meter panel
that contains input buffer circuitry or series
current-limiting resistors. Each output is
unbalanced, has a nominal level of +4dBu,
and is capable of driving loads of 2k ohms
and greater.
The meter output utilizes two ¼-inch
3-conductor phone jacks for interconnec-
tion. Prepare the mating connectors
(plugs) so that tip is signal high (+ or hot),
sleeve is low (– or cold); ring is not con-
nected.
Dub Output
The Model 55 contains a stereo line-level
output which is intended for connection to
a variety of analog audio devices. The dub
output is electronically balanced and cap-
able of driving 600 ohm loads or greater.
With the input impedance of most audio
devices at 10k ohms or greater, the dub
output can easily drive 10 or more devices
simultaneously.
The dub output can be configured for a
nominal level of –10dBV or +4dBu, so you
can connect to all line-level inputs with no
hassle (refer to the Configuration section
under Dub Output Level ).
The dub output utilizes two ¼-inch
3-conductor phone jacks for interconnec-
tion. Prepare the mating connectors
(plugs) so that tip is signal high (+ or hot),
ring is low (– or cold), and sleeve is shield.
To connect to an unbalanced load connect
the tip to high (+ or hot), and both the ring
and sleeve to shield.
Talent Amplifier Output
Up to four Model 35 or Model 38 Talent
Amplifiers can be connected in any combi-
nation to the Model 55’s talent amplifier
output. The output connector is a 3-pin
male XLR-type. For best performance,
use low-capacitance shielded microphone-
type cable to distribute the talent amplifier
signal. If you have a choice, select cables
with the heaviest wire gauge commonly
available. This will reduce voltage drop
when using long cable runs. Refer to the
Technical Notes section for additional
information.
The simplest installation would use a
microphone cable to connect the Model 55
to the first talent amplifier; the loop through
connector on that talent amp sending the
signal on to the next talent amp.
For convenience, you may want to wire
your facility to allow easy access to the
talent amplifier signal at all locations
where talent amplifiers might be used. The
talent amplifiers connect to the Model 55
in parallel, so the connectors on the distri-
bution panels or mult boxes must be wired
in parallel.
Warning: Do not connect the Model
55’s talent amplifier output to anything
but Studio Technologies’ talent amplifi-
ers. Some audio equipment may be
damaged by the +23Vdc contained on
pin 2 of the talent amplifier output
connector.
Several mounting options are available for
the Model 35 and 38 Talent Amplifiers. For
details refer to Mounting Options in this
section.