Studio Technologies 220 2008 - Manual (Page 11)

Model 220 User Guide Issue 4, October 2008
Studio Technologies, Inc. Page 11
But you’re welcome to try to “stump the
chumps” in the Studio Technologies tech-
nical support department! But first please
check the complete list of the available
option cards listed on the Studio Technol-
ogies website.
200-Series Announcer
Console Products
The Model 220 is just one in a series of
announcer console products available
from Studio Technologies. For applications
that require an alternate set of features the
other products in the 200-series should be
reviewed. Complete information is avail-
able on the Studio Technologies website.
Installation and
Setup
In this section interconnections will be
made using the input and output con-
nectors located on the Model 220’s back
panel. Microphone input, IFB input, line
input, main output, and talkback output
signals are interfaced by way of 3-pin XLR-
type connectors. A ¼-inch 3-conductor
phone jack is provided for the headphone
output. A 2.1 x 5.5 mm coaxial jack
allows connection of an external 24 volt
DC power source.
System Components
Included in the shipping carton are the fol-
lowing: Model 220 Announcer’s Console,
user guide, button label sheet, and 24 volt
DC power supply. For units shipped to
destinations in Japan and North America
the power supply will have a nominal AC
mains input of 120 volts. For all other des-
tinations a power supply compatible with
220/240 volt AC mains will be included.
Microphone Input
The Model 220 is compatible with bal-
anced dynamic and condenser micro-
phones. Depending on the application,
the microphone may be part of a headset,
or be an independent handheld or stand-
mounted model. The Model 220’s 48 volt
nominal power source will support essen-
tially all phantom-powered microphones.
The quality of the Model 220’s microphone
preamplifier and associated circuitry is
such that special applications may benefit
from using “high-end” microphones. If
selected appropriately, models from man-
ufacturers such as AKG, Beyer, Neumann,
Sennheiser, and Shure will perform very
well in Model 220 applications.
Microphone interconnection is made by
way of a 3-pin female XLR-type connec-
tor which is located on the Model 220’s
back panel. The mating connector (male)
should be wired so that pin 2 is signal
high (+ or hot), pin 3 is signal low (– or
cold), and pin 1 is shield. It’s possible
that an unbalanced microphone will also
work correctly. In this case, the mating
connector (male) should be wired so that
pin 2 is signal high (+ or hot), and signal
common/shield is connected to both pins
1 and 3.
The Model 220 is not compatible with
unbalanced “electret”-type microphones
that require a source of low-voltage DC
for operation. These microphones, some-
times found in low-cost headsets, are
not generally suitable for on-air or other
demanding applications.
As of the writing date of this user guide,
the Sennheiser HMD25 headset is very
popular for on-air sports broadcasting
use. A fine product, it works very well
with the Model 220. Note that adding the