SHURE MX412D/C Desktop Gooseneck Microphones ก้านไมค์ยาว 12 นิ้ว

• 50 to 17,000 Hz

Polar Pattern (Figure 2)

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

• 45.0 dB minimum

Mute Switch Attenuation

• 50.0 dB minimum

Preamplifier Output Clipping Level (1% THD)

• –6.0 dBV (0.5 V)

Polarity

• Positive sound pressure on diaphram 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 3)
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 performance
• criteria in European Standard EN55103 (1996) parts 1 and 2, for
• residential (E1) and light industrial (E2) environments.

REPLACEMENT PARTS

• 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