Studio Technologies 50 2000 - Manual (Page 14)

Issue 4, July 2000 Model 50/51 User Guide
Page 14 Studio Technologies, Inc.
Model 50 will also accept unbalanced
¼-inch 2-conductor phone plugs for inputs
and outputs. With unbalanced phone
plugs, tip is positive (+ or hot) and sleeve
is shield. If 3-conductor phone plugs are
used to connect unbalanced input or
output signals, connect positive (+ or hot)
to tip and shield to ring and sleeve.
Stereo Line Inputs
The Model 50 provides seven stereo line-
level inputs. Inputs 1 through 6 are located
on the back panel; input 7 is on the front.
Each input is electronically balanced, and
can be configured for compatibility with
–10dBV or +4dBu signal levels. The
Model 51 Control Console gives you push-
button control, so you can easily change
input sensitivities at any time (refer to the
Configuration section under Input Sensitiv-
ity). Monaural sources should be con-
nected to the left (L) input and configured
for mono operation (refer to the Configura-
tion 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 connected to
loudspeakers that contain integral power
amplifiers, such as the products from
Genelec.)
The outputs, labeled A and B, are elec-
tronically balanced and capable of driving
loads of 600 ohms or greater. In most
situations best performance will be ob-
tained if the audio amplifier’s input sensi-
tivity 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 perfor-
mance 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.