AKG C 680 BL Modo De Empleo página 7

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3.
Carefully lift the grid out of the bottom panel.
4.
Place the case on a wood block to lift the edge of the case off the
workbench surface.
Ventilate the room and be sure to observe the instructions provided
by the paint manufacturer. When using spray paints, wear a respi-
rator and use a spray booth.
Important:
Do not paint the grid. The paint would inevitably restrict or clog the holes
and thus severely degrade the acoustic performance of the microphone.
3. Powering
The C 680 BL is a condenser microphone and therefore needs a polarization
voltage ("phantom power").
If your mixer provides phantom power, switch the phantom power on. (Refer
to the relevant section in your mixer manual.)
3.1. Using Optional Phantom Power Supplies
If your mixer has no phantom power, insert an external phantom power
supply between the microphone and mixer input. We recommend the
optional N 62 E or N 66 E AC power supplies or B 18 battery supply (also
optional) from AKG. Using any power supplies not recommended by
AKG may damage your microphone and voids the warranty.
3.2. Retrofitting Phantom Power
You may also consider retrofitting a phantom power supply as per DIN 45596
to your mixer. If you do so, be sure to observe the precautions and war-
ranty conditions in the manual for the equipment in which you intend to
install the phantom supply.
3.2.1. Balanced Inputs
The DIN 45596 standard specifies a positive voltage of 12, 24, or 48 V on
the audio lines versus the cable shield. For balanced inputs, we recom-
mend the following wiring schemes:
Fig. 3: Input transformer with center tap (ungrounded).
Fig. 4: Input transformer without center tap (ungrounded).
7

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