Studio Technologies 55 2002 - Manual (Page 26)

Issue 4, June 2002 Model 55/56 User Guide
Page 26 Studio Technologies, Inc.
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 55. 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 55. 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
control 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 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
select an input sensitivity level for the
talent source. When you connect a micro-
phone or direct box, select Mic. When
keyboards or other preamplified sources
are connected, 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 talent
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 56 Doesn’t Work At All
Your StudioComm system was supplied
with a 5-conductor DIN-type cable that is
used to connect the Model 56 Control
Console to the Model 55 Central Control-
ler. This cable has an important character-
istic; 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 conduc-
tors! You must use a 5-conductor MIDI-
style cable or the Model 56 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!
Over Current LED
During normal operation the Over Current
LED, located on the front panel of the
Model 55, should not light. It will light,
flashing on and off, in response to prob-
lems with the Model 56 Control Console
and/or the Talent Amplifier output.