Issue 6, September 2004
Model 50/51 User Guide
Page 30
Studio Technologies, Inc.
be lit whenever the Model 38 is connected
to an operating Model 50. 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 50. 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 micro-
phone 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 button for stereo operation.
With a mono source, use only the In Left/
Mono connector and set the Stereo/Mono
button 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 button is used to se-
lect an input sensitivity level for the talent
source. When you connect a microphone
or direct box, select Mic. When keyboards
or other preamplified sources are connect-
ed, 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 level control,
switch to Mic, then listen as again you
raise the level control.
The Talent Level control works just like
you would guess: turn it up for more tal-
ent signal in the headphone mix, and turn
it down for less. The Talent and Cue Mix
level controls work like a mixer for the
headphone outputs, so you can have
any level you want of either source in
the headphone mix.
Troubleshooting
If you’re having problems getting the
StudioComm system up and running, this
section can help. If you haven’t read the
other sections of this guide, you should
do so before proceeding.
If the Model 51 Doesn’t Work At All
Your StudioComm system was supplied
with a 5-conductor DIN-type cable that
is used to connect the Model 51 Control
Console to the Model 50 Central Control-
ler. This cable has an important charac-
teristic; it implements all five conductors.
This means that all five pins on each plug
connect to each other using a length of
5-conductor cable. If you choose to use
your own cable it’s easy to get in trouble;
many MIDI cables only have three con-
ductors! You
must
use a 5-conductor
MIDI-style cable or the Model 51 will not
power up and function. Five conductor
MIDI cables are not hard to find, but you
must ask for them and ensure that you
get what you asked for.
Be warned!
Talent Amplifier Over Current LED
During normal operation the talent ampli-
fier Over Current LED should not light. It
will flash on and off if the talent amplifier
output is loaded to exceed its maximum
output current. The most common reason
for an over current condition would be a
shorted interconnecting cable. Also,
connecting more than the specified maxi-
mum of four Model 35 or Model 38 Talent
Amplifiers can also cause the LED to light.
Possible, but not likely, would be a fault
condition in a Model 35 or Model 38.
