Shure MX400D manual Replacement Parts and Accessories, Specifications

Custom Switch Modifications

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

SHURE, the Shure logo, and MICROFLEX are registered trade- marks of Shure 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 Inactive	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 1,000 Hz)

Rated at 150 Ω (180 Ω actual)

Open Circuit Sensitivity

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 (1kHz 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: 70.5 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: 0.82 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

Eligible to bear CE Marking. Conforms to European EMC Directive 89/336/EEC. Meets applicable tests and perfor- mance criteria in European Standard EN55103 (1996) parts 1 and 2, for residential (E1) and light industrial (E2) environments.

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