Replacement Parts - Shure Microflex MX391/C serie Guia Del Usuario

MICROPHONE SPECIFICATIONS
Polar Pattern (Figure 6)
Cardioid (MX391/C, MX391W/C, MX391LP/C, MX391WLP/C)
Supercardioid (MX391/S,
MX391WLP/S)
Omnidirectional (MX391/O,
MX391WLP/O)
Environmental Requirements
Operating Temperature Range: –18° C to 57° C (0° F to 135° F)
Relative Humidity: 0 to 95%
Dimensions
See Figure 3
Wiring Diagram
3
1
4
2
PREAMPLIFIER SPECIFICATIONS
These specifications apply only to the MX391/MX391W micro-
phones when used with the supplied preamplifier. All measurements
taken with the microphone mounted on a 76.2 cm x 76.2 cm (30 in.
x 30 in.) wooden surface and with the sound source incident at 30°
with respect to the surface plane.
Frequency Response (Figure 5)
50 to 17,000 Hz
Output Impedance (at 1000 Hz)
180Ω actual (rated at 150Ω)
Open Circuit Sensitivity
Cartridge Type 1 kHz ref. 1 V per
Pascal *
Cardioid –29.6 dB (33.5 mV)
Supercardioid –28.3 dB (38.5 mV)
Omnidirectional –21.5 dB (81.4 mV)
All settings –12 dB at 0 gain
*1 Pascal = 94 dB SPL
MX391W/S, MX391LP/S,
MX391W/O, MX391LP/O,
PIN 1 = SHIELD (use only HALF of the
shield, the other half solder to cable
clamp)
PINS 3 and 4 = BLACK LEAD (jumped)
PIN 2 = RED LEAD
FIGURE 2
Maximum Sound Pressure Level
(1 kHz at 1% Total Harmonic Distortion, 1 kΩ load)
Cardioid: 118.8 dB
Supercardioid: 117.5 dB
Omnidirectional: 110.7 dB
All settings +6 dB at 0 gain
Signal to Noise Ratio (referenced at 94 dB SPL)
Cardioid: 71.4 dB
Supercardioid: 72.7 dB
Omnidirectional: 79.5 dB
Equivalent Output Noise (A-weighted)
Cardioid: 22.6 dB SPL
Supercardioid: 21.3 dB SPL
Omnidirectional: 14.5 dB SPL
at 1 kΩ Load
Dynamic Range
96.2 dB
100 dB at 0 gain
Common Mode Rejection
45 dB minimum, 10 Hz to 100 kHz
Preamplifier Output Clipping Level
–6 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 the preamplifier XLR output connector.
Power Requirements
11 to 52 Vdc phantom
2.0 mA current consumption
Certification
Eligible to bear CE Marking.
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.

REPLACEMENT PARTS

Omnidirectional Cartridge
Supercardioid Cartridge
Cardioid Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preamplifier Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement Cable Kit (black)
Replacement Cable Kit (white)
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.
2
Conforms to European EMC
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R183B
R184B
R185B
RK183PK
C123
C125