Shure MX391 Handleiding

Shure Microfoon MX391

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Pagina 1/16

Printed in U.S.A.

www.shure.com

27A14048 (Rev. 1)

MX391 Series

MX391

Shure Microflex® MX391 Series microphones

are small, surface-mounted electret condenser

microphones designed for mounting on confer-

ence tables, stage floors, and lecterns. Their

high sensitivity and wide frequency range make

them especially suitable for picking up speech

and vocals in sound reinforcement and recording

applications.

Features

• Flat frequency response across the vocal range

for uncolored sound

• Interchangeable cartridges that provide a

choice of polar pattern for each application

• Sleek, low-profile design for unobtrusive

appearance

• RF filtering

Model Variations

Microflex MX391 microphones are available in

black or white.

The polar pattern of the included cartridge is indi-

cated by a model number suffix:

/C Cardioid

/S Supercardioid

/O Omnidirectional

Interchangeable Cartridges

Microflex microphones

use interchangeable car-

tridges that allow you to

choose the polar pattern

for different installations.

Surface Mount

Microphones

R183 Omnidirectional

R184 Supercardioid

R185 Cardioid

Microphone Placement

For best low-frequency response and rejection

of background noise, place the microphone on

a large, flat surface, such as a floor, table, or

lectern.

To reduce reverberance, avoid reflective surfaces

above or to the side of the microphone, such as

beveled sides of pulpits or overhanging shelves.

PREAMP

Preamp Gain

If necessary, the preamplifier gain can be reduced

by 12 dB. Contact an authorized Shure service

center for information.

RFI Filtering

Important: Microphones must be used with the

RK100PK preamp to optimize RF immunity.

Permanent Installation

1. Remove grille.

2. Place housing in position and mark location of

screw holes and bottom cable exit hole.

3. Drill starter hole for each screw and a 1/2 in.

bottom exit hole for the mic cable.

4. Insert 4-pin mini-connector and cable through

cable hole.

5. Replace grille with screw. Do not overtighten.

Do not attempt to detach the cable from the mi-

crophone, as damage may result.

Specifications

Replacement Parts

Omnidirectional Cartridge (Black) R183B

Supercardioid Cartridge (Black) R184B

Cardioid Cartridge (Black) R185B

In-Line Preamplifier (Black) RK100PK

In-Line Preamplifier (White) RK100PKW

Furnished Accessories

Zipper Bag 95B2313

In-Line Preamplifier (Black) RK100PK

Hex Wrench #4 80A67

CERTIFICATION

Eligible to bear CE Marking. Conforms to

European EMC Directive 2004/108/EC. Meets

Harmonized Standards EN55103-1:1996 and

EN55103-2:1996, for residential (E1) and light

industrial (E2) environments.

The Declaration of Conformity can be obtained

from:

Authorized European representative:

Shure Europe GmbH

Headquarters Europe, Middle East & Africa

Department: EMEA Approval

Wannenacker Str. 28

D-74078 Heilbronn, Germany

Phone: +49 7131 72 14 0

Fax: +49 7131 72 14 14

Email: EMEAsupport@shure.de

Type

Condenser (electret bias)

Frequency Response

50–17000 Hz

Polar Pattern

MX391/O: Omnidirectional

MX391/C: Cardioid

MX391/S: Supercardioid

Output Impedance

EIARatedat150Ω(180Ωactual)

Output Configuration

Active balanced

Sensitivity (at 1 kHz , open circuit voltage)

Cardioid: –30 dBV/Pa (33.5 mV)

Omnidirectional: –22 dBV/Pa (81.4 mV)

Supercardioid: –28 dBV/Pa (38.5 mV)

1 Pascal=94 dB SPL

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

Cardioid: 119 dB

Omnidirectional: 111 dB

Supercardioid: 118 dB

Equivalent Output Noise (A-weighted)

Cardioid: 23 dB SPL

Omnidirectional: 15 dB SPL

Supercardioid: 21 dB

Signal-to-Noise Ratio (referenced at 94 dB

SPL at 1 kHz)

Cardioid: 71 dB

Omnidirectional: 80 dB

Supercardioid: 73 dB

Dynamic Range (1 kΩ load at 1 kHz)

96 dB

Common Mode Rejection (10 Hz–100 kHz)

45 dB minimum

Preamplifier Output Clipping Level (1% THD)

–6 dBV (0.5 V)

Polarity

Positive sound pressure on diaphragm produces

positive voltage on pin 2 relative to pin 3 of out-

put XLR connector.

Logic Connections

LED IN: Activelow(≤1.0V),TTLcompatible.

Absolute maximum voltage: -0.7V to 50V.

Environmental Conditions

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

Storage Temperature: -29–74 °C (-20–165 °F)

Relative Humidity: 0–95%

Power Requirements

11–52 Vdc phantom, 2.0 mA

Product specificaties

Merk:	Shure
Categorie:	Microfoon
Model:	MX391
Kleur van het product:	Wit
Breedte:	53.04 mm
Diepte:	79.4 mm
Hoogte:	19.05 mm
Soort:	Tafelmicrofoon
Stroombron:	DC
Connectiviteitstechnologie:	Bedraad
Ingangsspanning:	11 - 52 V
Temperatuur bij opslag:	-29 - 74 °C
Aansluiting:	Mini XLR (4-pin)
Stroomverbruik:	2 mA
Signaal/ruis-verhouding:	110.7 dB
Microphone direction type:	Omnidirectioneel
Gevoeligheid microfoon:	-22 dB
Frequentie microfoon:	50 - 17000 Hz
Bedrijfstemperatuur (T-T):	-18 - 57 °C
Dynamisch bereik:	96.2 dB
Output impedance:	150 Ohm