LD Systems LD PRO Série Manuel D'utilisation page 14

CONTROLS:
1 MICROPHONE INPUT
Balanced XLR/jack microphone input
2 GAIN MICRO
Adjust the input sensitivity of the microphone
input with this gain control. Please note that
microphones that require phantom power
(condenser microphones, for example) will not
work on these inputs because they do not supply
phantom power.
3 LINE INPUTS
Balanced XLR/jack mono line input.
LINE INPUTS
4
Unbalanced stereo RCA line inputs.
5 GAIN LINE
Adjust the input sensitivity of the line input with
this gain control.
6 LINE OUTPUTS
Balanced XLR and jack mono outputs. The mixed
input signals are split before the power amplifier
unit and sent to this output. You can use this
output, for example, to drive additional active
speakers or amplifiers with the mixed input
signals.
Important: This output signal is sent before the
master tone control and the master volume, so
it is unaffected by these settings.
7 VOLUME MASTER
Use this control to adjust the overall volume of the
power amplifier.
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8 TREBLE
With the treble control, you can boost or decrease
the treble in the output signal by 12 dB.
9 BASS
With the bass control, you can boost or decrease
the bass in the output signal by 12 dB.
The bass boost switch on the LDPN122A2 and
LDPN152A2 additionally permits a boost of 3
dB @ 100 Hz (LDPN122A2) and 6 dB @ 100
Hz (LDPN152A2).
10 POWER / CLIP
The power LED lights up green when the unit is
on. The red clip LED starts to light up when the
amplifier overloads, in other words, when signal
modulation reaches the clipping range. You should
avoid constant illumination of this LED by reducing
the master volume (control no. 7 in the picture)
until the clip LED goes out.
11 GROUND-LIFT SWITCH
If you connect mains-powered instruments that
are grounded by a protective contact to the inputs
of the active cabinet, a ground loop may result
due to double grounding. You can eliminate the
resulting low-frequency hum by activating the
ground-lift switch.
12 AC INPUT
This power socket is used to connect the power
cord.
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ON / OFF
On/off switch