Studio Technologies 230 2008 - Manual (Page 12)

Issue 7, October 2008 Model 230 User Guide
Page 12 Studio Technologies, Inc.
200-Series Announcer
Console Products
The Model 230 is just one in a series of
announcer console products available
from Studio Technologies. The Model 230
was designed to support a variety of ap-
plications where a wide range of features
and flexibility is required. For applications
whose requirements are more limited in
scope, other products in the 200-series
should be reviewed. Complete information
is available 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 230’s back
panel. Microphone, IFB, line-level audio
source, intercom, main output, and line-
level talkback output signals are interfaced
by way of 3-pin XLR-type connectors. A
¼-inch 3-conductor phone jack is provid-
ed 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 230 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 230 is compatible with
balanced 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 230’s 48 volt
nominal power source will support essen-
tially all phantom-powered microphones.
The quality of the Model 230’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, Beyerdynamic,
Neumann, Sennheiser, and Shure will per-
form very well in Model 230 applications.
Microphone interconnection is made by
way of a 3-pin female XLR-type connec-
tor which is located on the Model 230’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 connec-
tor (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 230 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 230. Note that adding the suffix