Shure MX100 - Manual

Model Microflex

®

MX100 Series Wired

Lavalier Microphones User Guide

©

2006, Shure Incorporated

27F2832 (Rev. 1)

Printed in U.S.A.

GENERAL

Models MX183, MX184,

and

MX185

are wired lavalier electret

condenser microphones designed for speech and vocal pickup,

general purpose sound reinforcement, recording, and remote

monitoring applications. They can be clipped to neckties, lapels,

and other articles of clothing. Interchangeable cartridges make it

possible to easily reconfigure microphone coverage as the need

arises.

FEATURES

•

Wide dynamic range and frequency response for accurate

sound reproduction across the audio spectrum

•

Interchangeable cartridges that provide an optimal choice

for each application

•

Rotatable tie-clip that pivots in 90

°

increments for place-

ment flexibility

•

Supplied snap-fit foam windscreen that controls breath

noise and stays on securely

•

Balanced, transformerless output for increased immunity

to noise over long cable runs

•

Supplied dual tie clip holds two microphones for dual mik-

ing applications

•

New RF filtering

MODEL VARIATIONS

MX183 (Omnidirectional):

Provides low handling noise.

Pickup angle = 360

°

.

MX184 (Supercardioid):

Provides high rejection of ambient

noise and narrow pickup angle. Use of windscreen highly

recommended. Pickup angle (-3 dB) = 115

°

.

MX185 (Cardioid):

Provides good rejection of ambient noise.

Use of windscreen highly recommended. Pickup angle (-3 dB) =

130

°

.

GENERAL RULES FOR LAVALIER MICROPHONE USE

1. Attach the lavalier microphone approximately 76 mm to

152 mm (3 to 6 in.) below the neckline for the best sound.

2. Do not cover the microphone with your hand or clothing.
3. Use one of the supplied windscreens to minimize wind and

breath noise.

4. If four or more microphones will be active at any given time,

use of an automatic mixer, such as the Shure SCM810 or

FP410, is recommended.

USING THE TIE CLIP

Insert the top of the microphone through tie clip loop from below

until tie clip loop snaps into place over the lower groove on the

microphone. Refer to Figure 1.

USING THE WINDSCREENS

Snap-fit windscreen:

press it down on the microphone until it

clicks into place inside the upper groove on the microphone.

Provides 30 dB of “pop” protection.

NOTE:

The snap-fit windscreen can be removed by spreading

the slot in the plastic snap-fit ring.

Foam windscreen:

Slip the windscreen over the top of the

microphone so that it covers the side slots. The foam windscreen

provides 5 to 10 dB of “pop” protection.

CHANGING CARTRIDGES

The MX183, MX184, and MX185 microphones use

interchangeable cartridges. To remove the cartridge, unscrew it

from the microphone body, as shown in Figure 2. Install the

replacement cartridge by screwing it onto the microphone body.

ADJUSTING PREAMP GAIN

(Figure 3)

The MX100 microphone includes an adjustable gain

preamplifier, allowing the user to specify a

12 dB

or

0 dB

gain

setting. The preamp ships at the

12 dB

setting. To reduce the

signal gain at the MX100 preamplifier by

12 dB

, replace the gain

resistors to the

0 dB

setting (Table 3A).

RF FILTERING

MX100 Series must be used with RK100PK preamplifier in order

to optimize RF immunity.

SPECIFICATIONS
Type

Condenser (electret bias)

Frequency Response

(Figure 6)

50 to 17,000 Hz

Polar Pattern

(Figure 7)

MX183: Omnidirectional

MX184: Supercardioid

MX185: Cardioid

Output Impedance

EIA rated at 150

Ω

(

180

Ω

actual)

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

MX183: -27.5 dB (42.2 mV)

MX184: -33.5 dB (21.1 mV)

MX185: -35.0 dB (17.0 mV)

All settings -12 dB at 0 gain

*

1 Pascal = 94 dB SPL

Max SPL (1kHz at 1%THD, 1 k

Ω

load)

MX183: 116.7 dB

MX184: 122.7 dB

MX185: 124.2 dB

All settings +6 dB at 0 gain

Equivalent Output Noise (A-weighted)

MX183: 20.5 dB

MX184: 26.5 dB

MX185: 28.0 dB

Signal to Noise Ratio (referenced at 94 dB SPL)

MX183: 73.5 dB

MX184: 67.5 dB

MX185: 66.0 dB

Dynamic Range at 1 k

Ω

load

96.2 dB

100 dB at 0 gain

Power Requirements

11 to 52 Vdc phantom, 2.0 mA