Studio Technologies 40 - Manual (Page 13)

Issue 1, July 1994 Model 40 User Guide
Page 14 Studio Technologies, Inc.
Refer to Troubleshooting section if either
Over Current LED lights.
The Signal Present LEDs will light when-
ever a signal of “reasonable” level is
connected to its respective input.
Talent Amplifiers
Warning: Protect your ears! The
StudioComm talent amplifiers are
capable of driving headphones to
extremely high sound pressure levels.
Hearing experts advise against continu-
ous extended play, especially at high
levels.
Model 35 Talent Amplifier
The power present LED should be lit
whenever the Model 35 is connected to an
operating Model 40. The Model 35 has a
level control and a stereo/mono switch.
You can plug in one or two pairs of head-
phones with a total impedance of 75 ohms
or greater. Turn the knob to the output
level you want and select stereo or mono
by pressing the button. Both headphone
outputs are controlled by the one level
control. The Mono button sends L+R to
both the left and right output.
Model 38 Talent Amplifier
The Model 38 has the unique ability to
provide a personalized headphone mix for
the in-studio talent. The performer’s audio
can be connected to the talent inputs and
passively looped through to the control
room. This lets performers increase their
level in the headphone mix without an
engineer getting involved. The Model 38’s
circuitry was carefully designed to not
interfere with the talent audio as it passes
through.
The Model 38 has all the functions of the
Model 35, plus it provides personal mix
controls. The power present LED should
be lit whenever the Model 38 is connected
to an operating Model 40. You can plug in
one or two pairs of headphones with a
total impedance of 75 ohms or greater.
The Cue Mix Level control sets the head-
phone output level for the signal coming
from the Model 40. The Cue Mix Stereo/
Mono button switches both headphone
outputs between a stereo and mono (L+R)
feed of the cue mix.
The Model 38 allows connection of a
stereo or mono talent signal at microphone
or line level. If your talent source is stereo,
connect it to the In Left/Mono and In Right
connectors and set the Talent Stereo/
Mono switch for stereo operation. With a
mono source, use only the In Left/Mono
connector and set the Stereo/Mono switch
for mono operation. This will feed the
mono talent source to both left and right
headphone channels. Connect loop
through cables as needed for feeds to the
control room.
The Talent Mic/Line switch is used to
select the input sensitivity, matching the
talent source with the Model 38’s input
circuitry. When you connect a microphone
or direct box, select Mic. When keyboards
or other preamplified sources are con-
nected, select Line. The expected signal
level in the Mic position is –40 to –60dBu.
In the Line position it’s –10 to +10dBu. If
you are unsure of your signal level, start
with input sensitivity set for Line. If the
output level is not sufficient, turn down the
talent level control, switch to Mic, then
listen as again you raise the level control.