Studio Technologies M233-01151 - Manual (Page 12)

Issue 5, November 2014 Model 233 User Guide
Page 12 Studio Technologies, Inc.
Options
The Model 233’s standard resources are
more than sufficient to directly support a
large number of applications. But in the
“real world” of audio and intercommunica-
tions special needs always seem to arise.
To that end, Studio Technologies offers
a number of option cards. In addition to
passive or active components, each card
contains an integral connector, allowing
simple installation into a spare connector
location on the Model 233’s back panel.
For interest, the resources provided by
some of these option cards are worth
describing.
• The direct microphone output card
provides access to the dynamic or con-
denser microphone that is connected
to the Model 233’s mic input. Passive
components, along with the auxiliary
relay contact, create a “click-free” micro-
phone-level audio signal.
• The remote switch input card uses a
4-pin XLR connector to provide access
to the Model 233’s remote switch inputs.
Other general-purpose option cards
provide 3-pin XLR, 4-pin XLR, and 8-pin
EtherCon® connectors. With the range
of option cards available it’s hard to imag-
ine an application that can’t be served.
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.
Installation and
Setup
In this section interconnections will be
made using the input and output con-
nectors located on the Model 233’s back
panel. Microphone, line-level audio sourc-
es, intercom, main output, and line-level
talkback output signals are interfaced 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
The following is included in the shipping
carton: Model 233 Announcer’s Console,
user guide, button label sheet, and 24 volt
DC power supply.
Microphone Input
The Model 233 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 233’s 48 volt nominal
power source will support essentially all
phantom-powered microphones. The qual-
ity of the Model 233’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 233
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