Custom Switch Modifications

S4 is available for custom logic modifications. When S4 is in the ON position, pad W4 is connected to pad W5.

NOTE: For technical data by Fax, phone 1-800-488-3297 and follow the recorded instructions. For additional technical assis- tance, phone Shure at (847) 866-2200. In Europe, phone 49-7131-72140.

SHURE, the Shure logo, and MICROFLEX are registered trade- marks of Shure Brothers Incorporated.

REPLACEMENT PARTS AND ACCESSORIES

Snap-Fit Foam Windscreen (4 per pkg.) . . . . . . . RK412WS Foam Ball Windscreen . . . . . . . . . . . . . . . . . . . . . . . . . A99WS Locking Metal Windscreen . . . . . . . . . . . . . . . . . . . A412MWS Replacement 3 m (10 ft) XLR Cable . . . . . . . . . . . . . . . C120 Custom Logic Cable (specify length) . . . . . . . . . . . 15A523/1 Omnidirectional Cartridge . . . . . . . . . . . . . . . . . . . . . . R183B Supercardioid Cartridge . . . . . . . . . . . . . . . . . . . . . . . . R184B Cardioid Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R185B Base Plate Bumpers . . . . . . . . . . . . . . . . . . . . . . . . 80A8053A

DESIRED MICROPHONE FUNCTION

USER ACTION/LED DISPLAY

 

DIP SWITCH SETTINGS

 

 

 

 

Push to Mute (As Shipped)

Press and hold switch to temporarily mute micro-

S1

= OFF

 

phone; release switch to unmute

S2

= OFF

 

LED turns on when microphone is active

S3

= OFF

 

 

 

 

Push to Talk

Press and hold switch to activate microphone; re-

S1

= OFF

 

lease switch to mute

S2

= ON

 

LED turns on when microphone is active

S3

= OFF

 

 

 

 

Push On/Push Off

Press switch to toggle microphone on or off

S1

= ON,

 

LED turns on when microphone is active

S2

= ON for muted initial state

 

 

S2

= OFF for active initial state

 

 

S3

= OFF

 

 

 

 

Switch Deactivated, Mic Always Active

No action, LED Always OFF

S3

= ON

 

 

 

 

Switch Deactivated, Mic Always Active

Short LED IN terminal to LOGIC GROUND terminal

S3

= ON

 

LED Always ON

 

 

 

 

 

 

Automatic Mixer Mode

If S1=OFF, SWITCH OUT signal will be momentarily

S1

= ON or OFF

 

logic low when switch is pressed

S3

= ON

 

If S1=ON, SWITCH OUT signal will be latching logic

 

 

 

low when switch is pressed

 

 

 

Connect SWITCH OUT signal to various logic inputs

 

 

 

of automatic mixer for custom functions

 

 

 

Connect mixer channel GATE OUT to microphone

 

 

 

LED IN. LED on microphone turns on when its

 

 

 

channel is gated on

 

 

SPECIFICATIONS

Frequency Response (Figure 3)

50 to 17,000 Hz

Polar Pattern (Figure 4)

Output Impedance (at 1000 Hz)

Rated at 150 Ω (180 Ω actual)

Open Circuit Sensitivity

At 1 kHz, ref. 1 V per microbar*

Cardioid: ±53.5 dBV (2.11 mV)

Supercardioid: ±52.5 dBV (2.37 mV)

Omnidirectional: ±48.0 dBV (3.98 mV)

*1 microbar = 74 dB SPL

At 1 kHz, ref. 1 V per Pascal*

Cardioid: ±33.5 dBV (21.1 mV)

Supercardioid: ±32.5 dBV (23.7 mV)

Omnidirectional: ±28.0 dBV (39.8 mV)

*1 Pascal = 94 dB SPL

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

Cardioid:

123.0 dB

Supercardioid:

122.0 dB

Omnidirectional: 117.5 dB

Equivalent Output Noise (A-weighted)

Cardioid:

29.0 dB SPL

Supercardioid:

28.0 dB SPL

Omnidirectional: 23.5 dB SPL

Signal to Noise Ratio (referenced at 94 dB SPL)

Cardioid:

65.0 dB

Supercardioid:

66.0 dB

Omnidirectional: 70.5 dB

Dynamic Range with 1 kΩ Load 94.0 dB

Common Mode Rejection

45.0dB minimum

Mute Switch Attenuation

50.0dB minimum

Preamplifier Output Clipping Level (1% THD) ±6.0 dBV (0.5 V)

Polarity

Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of XLR output connector.

Power Requirements

11 to 52 Vdc phantom, 2.0 mA

Environmental Requirements

Operating Temperature Range: ±18° to 57° C (0° to 135° F)

Relative Humidity: 0 to 95% Dimensions (Figure 5)

Weight

MX412D: 0.81 kg (1.80 lbs) net, 1.63 kg (3.62 lbs) packaged

MX418D: .82 kg (1.82 lbs) net, 1.64 kg (3.64 lbs) packaged

Cable Type (Figure 7)

The attached custom cable contains a shielded audio pair and three unshielded conductors for logic control. Overall diameter = 0.6 mm (0.165 in.)

Certification

Conforms to European Union directives, eligible to bear CE marking; meets European Union EMC Immunity Requirements (EN 50 082±1, 1992).

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Shure MX400D manual Replacement Parts and Accessories, Specifications