Model Microflex® MX100 Series Wired Lavalier Microphones User Guide
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 mon- itoring applications. They can be clipped to neckties, lapels, and other articles of clothing. Interchangeable cartridges make it possi- ble 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
•Supplied
•Balanced, transformerless output for increased immunity to noise over long cable runs
•Supplied dual tie clip holds two microphones for dual mik- ing applications
MODEL VARIATIONS
MX183 (Omnidirectional): Provides low handling noise. Pick- up angle = 360.
MX184 (Supercardioid): Provides high rejection of ambient noise and narrow pickup angle. Use of windscreen highly recom- mended. Pickup angle
MX185 (Cardioid): Provides good rejection of ambient noise. Use of windscreen highly recommended. Pickup angle
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 mi- crophone. Refer to Figure 1 on page 7.
USING THE WINDSCREENS
NOTE: The
Foam windscreen: slip the windscreen over the top of the mi- crophone 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 interchange- able cartridges. To remove the cartridge, unscrew it from the mi- crophone body, as shown in Figure 2 on page 7. Install the replacement cartridge by screwing it onto the microphone body.
ADJUSTING PREAMP GAIN (FIGURE 3 ON PAGE 8)
This MX microphone includes an adjustable gain preamplifier, allowing 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
Type
Condenser (electret bias)
Frequency Response (Figure 8 on page 10)
50 to 17,000 Hz
Polar Pattern (Figure 9 on page 10) MX183: Omnidirectional MX184: Supercardioid MX185: Cardioid
Output Impedance
EIA rated at 150 180 actual)
Open Circuit Sensitivity (at 1 kHz, ref. 1V/Pascal*)
MX183:
MX184:
MX185:
All settings
Max SPL (1kHz at 1%THD, 1 k load)
MX183: 116.7 dB
MX184: 122.7 dB
MX185: 124.2 dB
All settings +6 dB at 0 gain
Equivalent Output Noise
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 load
96.2 dB
100 dB at 0 gain
Power Requirements
11 to 52 Vdc phantom, 2.0 mA
Common Mode Rejection
45.0dB minimum
Polarity
Positive sound pressure on diaphragm produces positive volt- age on pin 2 relative to pin 3 of output XLR connector.
©2004, Shure Incorporated | Printed in U.S.A. |
27D2832 (Rev. 3) |
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