LD Systems LDVIBZ12DC Manuel D'utilisation page 7

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LOW CUT CHANNEL 1 - 7/8
Low cut filter for suppressing low-frequency signals. Especially with voice and singing transmissions, an activated LOW CUT feature (switch
in the down position) can reduce disruptive bass frequencies and thus increase speech intelligibility. The cut-off frequency is 95 Hz.
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COMPRESSOR
Sliding compressor controller for channels 1 to 4. Depending on the setting, the signal is more or less compressed, i.e., the dynamics of
the signal is restricted (controller to the left stop = compressor is disabled, controller to the right stop = maximum compression). The level
loss caused by the increasingly stronger compression is automatically compensated by the compressor unit. The use of the compressor can
provide for an improved clarity of a singing voice in the mix.
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EQUALIZER HI CHANNEL 1 - 11/12
Equalizer high band for channels 1 to 11/12 (12 kHz, +/-15 dB). When turned to the left, levels are lowered, when turned to the right, they
are raised. In the centre position (resting point), the equalizer is inactive.
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EQUALIZER MID CHANNEL 1 - 7/8
Equalizer mid band for channels 1 to 7/8 (2.5 kHz, +/-15 dB). When turned to the left, levels are lowered, when turned to the right, they are
raised. In the centre position (resting point), the equalizer is inactive.
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EQUALIZER LOW CHANNEL 1 - 11/12
Equalizer bass band for channels 1 to 11/12 (80 kHz, +/-15 dB). When turned to the left, levels are lowered, when turned to the right, they
are raised. In the centre position (resting point), the equalizer is inactive.
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LEVEL AUX1 PRE / POST CHANNEL 1 - 11/12
Volume controller for adding the signal from channel 1 to 11/12 to an external effects device (effect send, switch 11 POST), or for controlling
an active stage monitor (monitor send, switch 11 PRE) Use the line output AUX SEND 1 (N 50) for activation.
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AUX1 PRE/POST CHANNEL 1 - 11/12
When using AUX 1 to control an external effects device, bring the switch to the up position POST. The control signal is now picked up after
the channel level controller (N 20), it is therefore dependent on the latter. To control a stage monitor, bring the switch to the down position
PRE. The signal is picked up before the channel level controller (N 20) and the volume of the stage monitor can be adjusted independently
of the channel volume.
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LEVEL DFX / AUX2 POST CHANNEL 1 - 11/12
Volume controller for adding the signal from channel 1 to 11/12 to the internal digital effects device (effect send, post fader). Use the line
output AUX SEND 2 (N 52) for activating an external effect. When using the AUX SEND 2 jack socket, the internal effects device is automati-
cally bypassed, and is therefore not usable.
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PAN CHANNEL 1 - 4 & BAL CHANNEL 5/6 - 11/12
PAN channel 1 to 4: Using the Panorama controller, position the signal of the corresponding channel in the stereo field of the total signal
(Centre position = perception of the signal in the middle of the stereo field). BAL channel 5/6 to 11/12: Use the balance controller to set the
relative volume between the left and right part of the connected stereo signal. When only the XLR socket or left socket L (MONO) of the line
input of channels 5/6 and 7/8 is in use, the controller performs the function of a Panorama controller.
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MUTE CHANNEL 1 - 11/12
To mute a channel, press down on the MUTE switch of the corresponding channel. The MUTE LED of the selected channel lights up. When
disabling the mute function, the MUTE LED goes out.
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PFL CHANNEL 1 - 11/12
Press down on the PFL switch (Pre Fader Listen) to be able to listen to the signal of the respective channel regardless of the channel level
controller (N 20) using headphones connected to the headphone jack PHONES (N 26). The PFL LED of the selected channel lights up. If the
PFL switch is brought to its original position (not down), the PFL LED will go out.
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