The Model 522 is a dynamic base-station microphone for radio communications, paging, and dispatching systems. Its cardioid (unidirectional) pickup pattern suppresses unwanted background noise from nearby dispatchers, ventilating equipment, or office machines. It also can reduce feedback in public address paging applications.
Press and hold the bar switch to talk. To lock the switch, press and pull it forward. To unlock the switch, move the bar back and release.
Use the switch located under the microphone base, near the cable entry, to select high (HI) or low (LO) impedance.
Use the low-impedance position for long cable lengths under conditions of severe hum disturbance. Use Shure Model A95 Series Line Matching Transformers when using a low-impedance microphone line with a high-impedance amplifier input.
The RED and BLACK leads may be used to control an external relay or switching circuit.
Set the impedance switch to the HI position (as shipped). Connect the GREEN cable lead and the shield to the amplifier chassis ground. The WHITE cable lead is the "hot" conductor.
Set the impedance switch to the LO position. Connect the shield to the amplifier chassis ground. The WHITE and GREEN cable leads are the "hot" conductors.
Input Type | Wire Color | Function | XLR Connector | 1/4 in. Phone Plug |
---|---|---|---|---|
Unbalanced | White | Audio | Pin 2 | Tip |
Green | Audio Ground | Pin 3 | Sleeve | |
Shield | Chassis Ground | Pin 1 | Sleeve | |
Balanced | White | Audio + | Pin 2 | Tip |
Green | Audio - | Pin 3 | Ring | |
Shield | Chassis Ground | Pin 1 | Sleeve |
Dynamic (moving coil)
60 to 11,000 Hz
Cardioid
Dual. "Low" is 260 ohms for connection to microphone inputs rated at 19 to 300 ohms and "High" for connection to high-impedance microphone inputs.
at 1kHz, open circuit voltage, dependent on impedance setting
LOW | -57.5 dB (1.3 mV) |
HIGH | -38.5 dB (12 mV)[1] |
Press-to-Talk Switch | lockable, for microphone and an external relay or control circuit. Microphone circuit normally shorted in both high and low impedance. |
Impedance Selection Switch | provides either high- or low-impedance operation. |
Internal rubber vibration isolator
2.1 m (7 ft) four-conductor, two conductors shielded non-detachable
Two-tone gray ARMO-DUR, with dull-chrome-plated steel screen
736 g (1 lb 10 oz.)
[1]1 Pa = 94 dB SPL
Typical Polar Pattern
Typical Frequency Response
Overall Dimensions
Cable | C31C |
On-Off Switch | K141S |
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4
Email: info@shure.de