Description
The CO100 is a miniature, omnidirectional
back-electret lavalier microphone designed
specifically for broadcast and sound rein-
forcement applications where acoustic feed-
back problems are minimal. (The EV CS200
unidirectional lavalier microphone is de-
signed for live sound applications where
feedback is a problem.) The frequency re-
sponse of the CO100 microphone provides
a full-range, well-balanced sound character
for clean and accurate sound reproduction.
The microphone’s omnidirectional polar
characteristic provides a uniform output re-
gardless of the direction of the sound. The
CO100 is designed to attach to the per-
former’s clothing using the supplied tie clasp
or the optional 390 dual-microphone tie
clasp. Supplied with each microphone is a
foam wind or pop screen to reduce unwanted
breath and wind noise. The microphone ele-
ment is attached to the electronics module
by a 3.1-meter (10-foot) length of black,
durable miniature cable.
Powering the CO100
The battery/electronics module is con-
structed of steel tubing to form an extremely
durable housing assembly for long reliable
use and superior emi/rfi attenuation. The
CO100 may be powered by either an inter-
nal 1.5-volt AAA alkaline battery or exter-
nal 9- to 52-volt phantom power. If desired,
the CO100 can be operated in a dual mode
employing both battery and phantom power.
The advantage of this configuration is the
insurance against loss of signal should the
phantom voltage fail. When phantom volt-
age is present, the battery is deactivated;
however, should the phantom voltage fail,
the battery will automatically power the elec-
tronics module. The AAA alkaline battery
will power the microphone for a minimum
of 1000 hours.
Operation
To operate the CO100 by the simplest
method, internal battery power, first open the
battery compartment by turning the sleeve
counterclockwise. Insert the AAA-size bat-
tery into the battery compartment, checking
for correct polarity (see Figure 3). Close the
compartment by turning the sleeve clock-
wise. Be sure to screw the sleeve firmly to
avoid mechanical noise.
To operate the CO100 by phantom power:
using high-quality balanced cable with XLR
connectors, connect the electronics module
to the mixer input which is providing the
phantom power. The connecting cable used
should be standard two-conductor shielded
type; the shield is used as ground return and
must be connected properly to avoid electri-
cal noise.
Battery
Because the current drain on the battery is
so small (approximately 150 microamps) the
battery may be left on continuously with a
useful life expectancy of approximately
1000 hours. The battery may remain within
the electronics module when phantom power
is used.
Battery Replacement Guide
Duracell
MN2400
Eveready
E92
Bright Star
7526
Burgess
B24A
Ray-O-Vac
824
Panasonic
AM4
Varta
4003
Architects’ and Engineers’
Specifications
The microphone shall be a miniature, back-
electret condenser with an omnidirectional
polar pattern. The microphone shall be used
CO100
Miniature Electret
Condenser
Omnidirectional
Microphone
• Microphone capsule measures
less than 1 inch in length
• Durable 10-foot miniature cable
provides excellent flex life
• Dual-power configuration (both
phantom and/or battery) insures
against signal loss
25 m m
(0.99 in .)
10.5 m m
(0.41 in .)
