Studio Technologies 230 2014 - Manual (Page 12)

Issue 9, November 2014 Model 230 User Guide
Page 12 Studio Technologies, Inc.
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 either greater or
more limited in scope, other products in
the 200-series should be reviewed. Com-
plete information is available on the Studio
Technologies website.
Installation and
Setup
In this section interconnections will be
made using the input and output connec-
tors located on the Model 230’s back panel.
Microphone, main output, line-level talk-
back output, line-level audio sources, IFB,
and party-line intercom signals are inter-
faced by way of 3-pin XLR 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 exter-
nal 24 volt DC power source.
System Components
Included in the shipping carton are the
following: Model 230 Announcer’s Console,
user guide, button label sheet, and 24 volt
DC power supply.
Microphone Input
The Model 230 is compatible with balanced
dynamic and condenser microphones.
Depending on the application, the micro-
phone 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 essentially all
phantom-powered microphones. The qual-
ity of the Model 230’s microphone pream-
plifier and associated circuitry is such that
special applications may benefit from using
“high-end” microphones. If selected appro-
priately, models from manufacturers such
as AKG, Beyer, Neumann, Sennheiser, and
Shure will perform very well in Model 230
applications.
The microphone input is also compatible
with line-level audio sources. This allows
the output of an external microphone pre-
amplifier, microphone processor, or audio
console to be directly connected. When the
configuration DIP switches are set for 0 dB
(no gain) the nominal level of the source
audio signal should be approximately
–2 dBu.
Microphone interconnection is made by
way of a 3-pin female XLR connector 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 connector (male) should
be wired so that pin 2 is signal high (+ or
hot), and signal common/shield is con-
nected 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, sometimes
found in low-cost headsets, are not gener-
ally suitable for on-air or other demanding
applications.
As of the writing date of this user guide,
the Sennheiser HMD 26 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 suf-
fix “-XQ” to the headset’s full part number
(HMD 26-600-XQ) specifies a 3-pin male
XLR connector for the dynamic micro-
phone and a ¼-inch 3-conductor plug for