CO2/CO2Pro
Miniature Condenser
Lavalier Microphone
• Very Small Profile
• Omnidirectional Polar Pattern
• Extremely Rugged Cable
• Paintable Tincture
™
Surface
• Complete Assortment of Clips
• Back-Electret Design
• Available in Black or White
SPECIFICATIONS
Generating Element:
Condenser, back electret
Frequency Response (see Figure 1):
50-20,000 Hz
Polar Pattern:
Omnidirectional
Sensitivity,
Open-Circuit Voltage:
8.5 mV/pascal at 1,000 Hz
Power level:
–38 dB at 1,000 Hz
(0 dB = 1 mW/pascal)
Dynamic Range:
128 dB
Equivalent Noise:
<29 dB SPL, typical, A weighted
(0 dB = 20 micropascals)
Dynamic Range:
99 dB
Output Impedance at 1,000 Hz :
100 ohms
Power Requirements:
12 to 52 V dc phantom supply
Current Consumption:
1.0 mA
Polarity:
A positive pressure on the diaphragm
produces a positive voltage on output
pin 2 (+)
Finish:
CO2, COPRO: Nonreflecting black
CO2-W, COPRO-W: White
Dimensions,
Electronics Module,
Length:
93 mm (3.65 in.)
Body Diameter:
19 mm (0.75 in.)
Capsule Diameter:
5.3 mm (0.21 in.)
Cable Length:
2.6 m (8 ft), permanently attached
Net Weight:
36 g (1.3 oz)
Shipping Weight:
238 g (8.4 oz)
Furnished Accessories,
CO2:
Single mic tie bar
Double mic tie bar
Single cable holding tie bar
Zippered vinyl carrying pouch
CO2Pro:
Single mic tie bar
Double mic tie bar
Single cable holding tie bar
Mic tie tack
Cable tie tack
Mic vampire clip
Cable vampire clip
Zippered vinyl carrying pouch
DESCRIPTION AND APPLICATIONS
The Electro-Voice CO2 and CO2Pro are omni-
directional back-electret condenser lavalier
microphones designed for the broadcast and
sound reinforcement applications where acous-
tic feedback problems are minimal.
The frequency response of the CO2/CO2Pro
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
regardless of the direction of the sound.
The CO2/CO2Pro microphone is designed to
attach to the performer's clothing using the
supplied clips (See Furnished Accessories).
The electronics housing features a side clip to
facilitate attachment to a belt or pocket.
The microphone’s transducer is attached to
the electronics module by a 2.6-meter (8-foot)
length of miniature cable. The cable is high-
strength and flexible, designed to withstand the
rigors of professional use. The exclusive Tinc-
ture
™
surface accepts acrylic laquer paint—to
blend with any surface.
POWERING THE CO2/CO2PRO
The CO2 and CO2Pro are powered by an
external 12- to 52-volt phantom power supply
only. The electronics circuitry is wrapped with
an insulated copper foil for superior emi/rfi
attenuation. This module is enclosed in a hous-
ing of high-strength polycarbonate resin, form-
ing a package that is light-weight but extremely
durable for long, reliable use.
OPERATION
To operate the CO2/CO2Pro, use high-quality
balanced cable with XLR connectors to con-
nect the electronics housing 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 properly connected
to avoid electrical noise.
FIGURE 1 — Frequency Response
