PRESONUS ADL600 User Manual page 7

High voltage tube preamp
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CONTROLS & CONNECTIONS
+48V: The 48 volts supplied by way of the XLR connector, provides power for
condenser mics and any other devices requiring continuous phantom power
through the XLR input. This power is supplied at a constant level to prevent any
degradation of audio quality.
XLR connector wiring for Phantom Power
Pin 1= GND
Pin 2= +48V
Pin3= +48V
POL INV: Reverses the polarity of the signal. Use the phase invert when
recording with more than one open microphone to combat phase cancellation
between microphones.
-20dB PAD: Engaging the PAD switch provides 20dB of attenuation. This is a
very useful feature for reducing the level coming into the ADL 600 and thus
preventing the signal from clipping or distorting. This may occur due to high
output level from a microphone or other device. Padding the input serves to
provide increased "headroom" for the operator while lessening the likelihood of
signal overload.
HP FILTER: Engages the high pass filter set with the HP FILT control.
VU METER -6dB: Decreases the VU meter by 6dB. This can help you meter
loud input sources if your VU meter is "slamming" or is pegged.
POWER: Turns your ADL 600 ON/OFF.
7

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