Audio Connections; Impedance Selection; Logic Connections - Shure 522 User Manual

Impedance Selection

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.

Logic Connections

The RED and BLACK leads may be used to control an external relay or switching circuit.

Audio Connections

Unbalanced high-impedance operation:
Set the impedance switch to the HI position (as shipped). Connect the GREEN cable lead and the shield to the amplifier chas­
sis ground. The WHITE cable lead is the "hot" conductor.
Balanced-line low-impedance operation:
Set the impedance switch to the LO position. Connect the shield to the amplifier chassis ground. The WHITE and GREEN ca­
ble leads are the "hot" conductors.
Cable-to-Connector Wiring
Input Type Wire Color
White
Unbalanced Green
Shield
White
Balanced Green
Shield
Function XLR Connector
Audio Pin 2
Audio Ground Pin 3
Chassis Ground Pin 1
Audio + Pin 2
Audio - Pin 3
Chassis Ground Pin 1
Shure Incorporated
1/4 in. Phone Plug
Tip
Sleeve
Sleeve
Tip
Ring
Sleeve
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