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Powering

3 Powering
14
The C4500 BC operates on any phantom power source to IEC 61938. This
standard specifies a positive voltage of 12, 24 or 48 VDC on both audio wires
referenced to the cable shield. Alternatively, you can operate the microphone
on any DC voltage between 9 and 52 V fed to the microphone via standard
phantom power circuitry.
Adding Phantom Power to Balanced Input Stages
Input transformer with center tap (floating).
Input transformer with no center tap (floating).
Standard values for Rv or 2 x Rv:
V
R
s
12 V ±2 V
330 ohms
24 V ±4 V
680 ohms
48 V ±4 V
3300 ohms
2 x R
v
v
680 ohms
1200 ohms
6800 ohms
C4500 BC

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