Studio Technologies 55 2005 - Manual (Page 12)

Issue 5, August 2005 Model 55/56 User Guide
Page 12 Studio Technologies, Inc.
Control Room Output
The Model 55 contains a stereo line-level
output for connection to an audio power
amplifi er. This audio amplifi er serves a
pair of loudspeakers that are located in the
control room. (Of course the control room
output can be connected to loudspeakers
that contain integral power amplifi ers, such
as the products from Genelec.)
The output is electronically balanced and
capable of driving loads of 600 ohms or
greater. In most situations best performance
will be obtained if the audio amplifi er’s input
sensitivity is set to near maximum. Refer to
the Technical Notes section for details on
setting amplifi er sensitivity.
The control room output utilizes two ¼-inch
3-conductor phone jacks for interconnection.
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.
Meter Output
The meter output is intended to be
connected 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 +4 dBu, and is capable of driving loads
of 2 k ohms and greater.
The meter output utilizes two ¼-inch
3-conductor phone jacks for interconnection.
Prepare the mating connectors (plugs) so
that tip is signal high (+ or hot), sleeve is low
(– or cold); ring is not connected.
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 10 k ohms or greater, the dub
output can easily drive ten or more devices
simultaneously.
The dub output can be confi gured for a
nominal level of –10 dBV or +4 dBu, so
you can connect to all line-level inputs
with no hassle (refer to the Confi guration
section under Dub Output Level).
The dub output utilizes two ¼-inch
3-conductor phone jacks for intercon-
nection. 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 Amplifi er Output
Up to four Model 35 Talent Amplifi ers
can be connected in any combination
to the Model 55’s talent amplifi er 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 amplifi er
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 fi rst talent amplifi er; the loop through
connector on that talent amp sending the
signal on to the next talent amp.