Issue 6, September 2004
Model 50/51 User Guide
Page 14
Studio Technologies, Inc.
should be connected to the left (L) input
and configured for mono operation (refer
to the Configuration section under Stereo/
Mono Input).
Control Room Outputs
The Model 50 contains two stereo line-
level outputs for connection to two audio
power amplifiers. These audio amps
serve two pairs of loudspeakers that are
located in the control room. (Of course
the control room outputs can be connect-
ed to loudspeakers that contain integral
power amplifiers, such as the products
from Genelec.)
The outputs, labeled A and B, are
electronically balanced and capable
of driving loads of 600 ohms or greater.
In most situations best performance will
be obtained if the audio amplifier’s input
sensitivity is set to near maximum. Refer
to the Technical Notes section for details
on setting amplifier sensitivity.
Studio Output
The Model 50 contains a stereo line-level
output for connection to an audio power
amplifier. This audio amplifier serves the
pair of loudspeakers that is located in the
studio area. (Of course the studio output
can be connected to loudspeakers that
contain integral power amplifiers.)
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
amplifier’s input sensitivity is set to near
maximum. Refer to the Technical Notes
section for details on setting amplifier
sensitivity.
Dub Output
The Model 50 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 capable 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 is available on phone
jacks located on both the front and back
panels of the Model 50. The phone jacks
are connected in parallel, being a multiple
or mult of each other; one set of dub
output circuits drive both outputs. The
design intention was that permanent
connections would be made to the back
panel dub output, while the front panel
dub output would remain available for
“on the spot” use.
Meter Output
The meter output is intended for connec-
tion to VU- or PPM-style meters or meter
panels that contains input buffer circuitry
or series current-limiting resistors. The me-
ter output channels have a nominal level
of +4dBu, but are not precisely calibrated
by Model 50 circuitry. While 1%-tolerance
resistors are used in the Model 50, the
meters or meter panels should include
calibration trim pots to ensure the most
accurate level reading.
A single ¼-inch 3-conductor jack is used
to connect to the stereo meter output.
Each output channel is unbalanced, has
