Shure Microflex MX418 Manual

Shure Mikrofon Microflex MX418

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GENERAL

Shure Microflexr MX400 Series microphones are miniature goose-

neck-mounted electret condenser microphones designed primarily for

speech and vocal pickup. They can be mounted on lecterns, pulpits,

or conference tables. All models include a preamplifier and are avail-

able with interchangeable cardioid, supercardioid, or omnidirectional

cartridges.

FEATURES

SWide dynamic range and frequency response 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 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.

SELECTING A POLAR PATTERN

All MicroflexR microphones are available with any one of three inter-

changeable cartridges. The polar pattern of the cartridge is indicated

by the model number suffix:

/C = Cardioid, /S = Supercardioid, /O= Omnidirectional

Cardioid (C). Recommended for general sound reinforcement

applications. Pickup angle (–3 dB) = 130°.

Supercardioid (S). Recommended for sound reinforcement

applications requiring narrow or more distant coverage. Pickup

angle (–3 dB) = 115°.

Omnidirectional (O). Recommended for recording or remote

monitoring applications. Pickup angle = 360°.

GENERAL INSTALLATION GUIDELINES

1. Aim the microphone toward the desired sound source,

such as the talker, and away from any unwanted sound

source, such as a loudspeaker.

2. Place the tip of the microphone within 15 to 30 cm (6 to

12 in.) of the desired sound source.

3. Always use the supplied windscreen or the optional met-

al windscreen to control breath noise.

4. If four or more microphones will be open at the same time,

use of an automatic mixer, such as the Shure SCM810

or FP410, is recommended.

MICROPHONE INSTALLATION

Installing a Microphone in a Mounting Flange (Figure 2)

1. Drill a 22 mm (7/8 in.) diameter hole in the desired location.

2. Trace and drill three starter holes for the supplied screws

using the flange as a template.

3. Insert the preamplifier through the mounting flange.

4. Slip the mounting flange retaining ring over the bottom

of the preamplifier and slide it up until it is flush to the bot-

tom of the flange. Then press the ring firmly into place.

5. Secure the flange to the mounting surface with three

screws.

Installing a Microphone in a Shock Mount (Figure 1)

1. Drill a 44 mm (1-3/4 in.) diameter hole in the desired

location.

2. Trace and drill three starter holes for the screws using

the shock mount as a template.

3. Secure the shock mount to the mounting surface with

three screws.

Installing the Foam Windscreen (Figure 3)

1. Press the foam windscreen onto the microphone until it

snaps into the groove located below the cartridge.

2. To remove the windscreen, spread the gap in its mounting

ring with a screwdriver or thumbnail and pull the wind-

screen off carefully.

ADJUSTING PREAMP GAIN (Figure 4)

This MX microphone includes an adjustable gain preamplifier, al-

lowing the user to specify a 12 dB or 0 dB gain setting. The preamp

ships at the 12dB setting. Gain may be decreased by 12dB by moving

the preamp jumpers to the 0dB setting.

SPECIFICATIONS

Frequency Response (Figure 5)

50 to 17,000 Hz

Polar Pattern (Figure 5)

Output Impedance (at 1000 Hz)

180 Ω actual (rated at 150 Ω)

Microflex MX400S Series

User Guide

27F2830 (BG)

2002, Shure Incorporated Printed in U.S.A.

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 6)

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.

NOTE: For technical data by Fax, phone 1-800-488-3297 and follow

the recorded instructions. For additional technical assistance, phone

Shure at (847) 866-2200. In Europe, phone 49-7131-72140.

SHURE, the Shure logo, and MICROFLEX are registered trademarks of

Shure Incorporated.

REPLACEMENT PARTS AND ACCESSORIES

Foam Ball Windscreen A99WS. . . . . . . . . . . . . . . . . . . . . .

Locking Metal Windscreen A412MWS. . . . . . . . . . . . . . . .

Portable Desktop Base A412B. . . . . . . . . . . . . . . . . . . . . . .

Stand Adapter A57E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Omnidirectional Cartridge R183B. . . . . . . . . . . . . . . . . . . .

Supercardioid Cartridge R184B. . . . . . . . . . . . . . . . . . . . . .

Cardioid Cartridge R185B. . . . . . . . . . . . . . . . . . . . . . . . . . .

Snap-fit Foam Windscreen (4) RK412WS. . . . . . . . . . . . .

Shock Mount A400SM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Microphone à col de cygne MicroflexR

série MX400, Guide de l’utilisateur

GÉNÉRALITÉS

Les Shure MicroflexR s rie MX400 sont des microphones minia-é

tures électrostatiques col de cygne con us essentiellement pourà ç

le captage de la voix. Ils peuvent ê étre mont s sur des lutrins,

chaires ou tables de conférence. Tous les modèles sont dot s d uné ’

préamplificateur et disponibles avec cartouches cardioïde, super-

cardio de ou omidirectionnelle interchangeables.ï

AVANTAGES

SLarge gamme dynamique et courbe de réponse pour une

reproduction précise du son sur tout le spectre audio

SCartouches interchangeables permettant une courbe de

directivité optimale pour chaque application

SSortie équilibrée sans transformateur pour une

immunité aux bruits accrue avec de grandes longueurs

de fil.

SMonture silentbloc assurant une isolation de 20 dB

contre le bruit des vibrations de surface

SMonture à bride verrouillable permettant de fixer en

permanence le microphone sur un lutrin, une chaire ou

une table de conférence

SCoupe-vent encliquetable

VARIANTES

SMX412 : Microphone à col de cygne de 305 mm

SMX418 : Microphone col de cygne de 457 mmà

SMX412S : Microphone à col de cygne de 305 mm avec

interrupteur et témoin DEL.

SMX418S : Microphone à col de cygne de 457 mm avec

interrupteur et témoin DEL.

CHOIX DE LA CARTOUCHE

Tous les microphones MicroflexR sont offerts avec l’une des trois

cartouches interchangeables. La courbe de directivité de la car-

touche utilisé ée dans un micro particulier est indiqu e par le suffixe

du numé èro de mod le :

C = Cardioïde, S = Supercardioïde, O= Omnidirectionnelle

Cardioïde (C). Recommand pour les applications de sonorisa-é

tion gé é –n rale. Angle de captage ( 3 dB) = 130_.

Supercardioïde (S). Recommandé pour les applications de so-

norisation exigeant un captage plus troit ou plus grande dis-é à

tance. Angle de captage (–3 dB) = 115_.

Omnidirectionnel (O). Recommandé pour l’enregistrement ou le

captage à distance. Angle de captage = 360_.

DIRECTIVES GÉNÉRALES POUR L’INSTALLATION

1. Diriger le microphone vers la source sonore d sir e, paré é

exemple un orateur, et à ’ é l oppos des sources sonores

indésirables telles que des haut-parleurs.

2. Placer la tê à àte du microphone 15 30 cm de la source

sonore dé ésir e.

3. Toujours utiliser le coupe-vent fourni ou le coupe-vent op-

tionnel en métal pour minimiser les bruits de respiration.

4. Lorsque quatre microphones ou plus doivent être ouv-

erts simultané ’ment l usage d’ éune table de m lange au-

tomatique, telle que la Shure SCM810 ou FP410 est re-

command .é

INSTALLATION DU MICROPHONE

Fixation des microphones sur une bride de montage

(Figure 2)

1. Percer un trou de 22 mm à ’ l emplacement dé ésir .

Produkt Specifikationer

Mærke:	Shure
Kategori:	Mikrofon
Model:	Microflex MX418

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