Shure MX412 Handleiding

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E2002, Shure Incorporated

MODEL MX400 SERIES MICROPHONES

OVERVIEW

Shure MicroflexrMX400 Series microphones are miniature

gooseneck-mounted electret condenser microphones de-

signed primarily for speech and vocal pickup. They can be

mounted on lecterns, pulpits, or conference tables. All models

include a preamplifier and are available with interchangeable

cardioid, supercardioid, or omnidirectional cartridges.

FEATURES

SWide dynamic range and frequencyresponse for

accurate sound reproduction across the audio spectrum

SInterchangeable cartridges provide the right polar pattern

for every application

SBalanced, transformerless output for increased immunity

to noise over long cable runs

SShock mount that provides over 20 dB isolation from

surface vibration noise

SLocking flange mount for permanently securing

microphone to lecterns, pulpits, or conference tables

SSnap-fit foam windscreen

MODEL VARIATIONS

SMX412: 305 mm (12 in.) gooseneck microphone.

SMX418: 457 mm (18 in.) gooseneck microphone.

SMX412S: 305 mm (12 in) gooseneck microphone;

includes a mute switch and an LED.

SMX418S: 457 mm (18 in) gooseneck microphone;

includes a mute switch and an LED.

SPECIFICATIONS

Frequency Response (Figure 1)

50 to 17,000 Hz

Polar Pattern (Figure 2)

Output Impedance (at 1000 Hz)

Rated at 150 Ω (180 Ω actual)

Open Circuit Sensitivity (at 1 kHz, ref. 1 V/Pascal*)

Cardioid: –35.0 dB (17.8 mV)

Supercardioid: –33.5 dB (21.1 mV)

Omnidirectional:–27.5 dB (42.2 mV)

All settings –12 dB at 0 gain

*1 Pascal = 94 dB SPL

Maximum SPL (1 kHz at 1% THD, 1 kΩ load)

Cardioid: 124.2 dB

Supercardioid: 122.7 dB

Omnidirectional:116.7 dB

All settings +6 dB at 0 gain

Equivalent Output Noise (A-weighted)

Cardioid: 28.0 dB SPL

Supercardioid:26.5 dB SPL

Omnidirectional:20.5 dB SPL

Signal to Noise Ratio (referenced at 94 dB SPL)

Cardioid: 66.0 dB

Supercardioid:67.5 dB

Omnidirectional: 73.5 dB

Dynamic Range at 1 kΩ Load

96.2 dB

100 dB at 0 gain

Common Mode Rejection

45.0 dB minimum

Mute Switch Attenuation (switched models only)

50.0 dB minimum

Preamplifier Output Clipping Level (1% THD)

–6.0 dBV (0.5 V)

–12 dB at 0 gain

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)

Model MX400 Series Microphones

Specification Sheet

Product specificaties