Shure EZO Specification Sheet

Easyflex EZO Series Microphones

Specification Sheet

EASYFLEX EZO SERIES MICROPHONES

SPECIFICATIONS

Frequency Response (Figure 1)

50 to 17,000 Hz

Polar Pattern (Figure 2)

Cardioid

Output Impedance (at 1 kHz)

EIA Rated at 150 Ω (180 Ω actual)

Open Circuit Sensitivity

(at 1 kHz, ref. 1 V/Pascal*) –45.7 dB (5.19 mV)

*1 Pascal = 94 dB SPL

Maximum SPL

(1 kHz at 1% THD, 1 kΩ load) 129 dB

Equivalent Output Noise

(A-weighted) 29 dB SPL

Signal to Noise Ratio

(referenced at 94 dB SPL) 65 dB

Dynamic Range at (1 kΩ load) 100 dB

Common Mode Rejection

45 dB minimum

OVERVIEW

Use the Easyflext EZO series miniature overhead microphones for choirs and performance groups in recording or sound reinforcement applications. These electret condenser microphones have a wide frequency range and high sensitivity. Designed for overhead suspension from a ceiling or other fixture, the attached wireform allows them to be easily aimed at the sound source.

FEATURES

SWide dynamic range and frequency response for accurate sound reproduction across the audio spectrum

SWhite or Charcoal Gray finish that blends unobtrusively with most surroundings

SFlexible wire form for ease of aiming

SIn-line preamp reduces visible size of microphone

SSlide on windscreen

Preamplifier Output Clipping Level (1kHz @ 1%THD, 1 kΩ load)

–12.0 dBV (.25 V)

Polarity

Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.

Power Requirements

11 to 52 Vdc phantom, 2.0 mA

Environmental Requirements

Operating Temperature Range: –18° C to 57° C (0° F to 135° F)

Relative Humidity: 0 to 95%

Dimensions (Figure 3)

CERTIFICATION

Eligible to bear CE Marking. Conforms to European EMC Directive 89/336/EEC. Meets applicable tests and performance criteria in European Standard EN55103 (1996) parts 1 and 2, for residential (E1) and light industrial (E2) environments.

REPLACEMENT PARTS

Foam windscreen, charcoal	RPM312
Foam windscreen, white	RPM314

E2002, Shure Incorporated

EASYFLEX EZO SERIES MICROPHONES

Specification Sheet

RELATIVE RESPONSE (dB)

180o

150o

+10

120o

0

90o

–10

									60o
20	50	100	200	500	1,000	2,000	5,000	10,000	20,000	30o

FREQUENCY (Hz)

TYPICAL FREQUENCY RESPONSE

Figure 1

14.0 mm

(0.55 in.)

11.7 mm

(0.46 in.)

19.0 mm

(0.75 in.)

123.1 mm

(4.84 in.)

DIMENSIONS

Figure 3

		180o
	150o	150o	150o
			120o
	120o	120o
			90o
	90o	90o	90o
–20 dB			–20 dB
–15 dB		60o	–15 dB60o
–10 dB	60o		–10 dB
–5 dB			–5 dB
	30o	30o	30o
0			0
	250 Hz	CARDIOID	2500 Hz
	500 Hz		6400 Hz
	1000 Hz		10000 Hz

TYPICAL POLAR PATTERNS

Figure 2

5.8 mm

(0.23 in.)

59.1 m

(30.0 ft.)

2