LD Systems LDVIBZ12DC Manuel D'utilisation page 8

16
PEAK LED CHANNEL 1 - 11/12
PEAK channel 1 - 7/8: Once the red Peak LED lights up, the corresponding channel is operating at the distortion limit. Adjust the Gain con-
troller (N 4) so that the peak LED of the corresponding channel only lights up briefly when signal peaks occur. Avoid the permanent lighting
of the peak LED by reducing the input gain or input sensitivity. PEAK Channel 9/10 and 11/12: Once the red Peak LED lights up, the corre-
sponding channel is operating at the distortion limit. Adjust the output level of the source device so that the peak LED of the corresponding
channel only lights up briefly when signal peaks occur. Avoid the permanent lighting of the peak LED.
17
GR1-2 CHANNEL 1 - 11/12
Press down on the GR1-2 switch to add the corresponding channel to the channel group 1 (PAN/BAL all the way to the left), to the channel
group 2 (PAN/BAL all the way to the right), or to both groups of channel groups 1 and 2 in the same proportion (PAN/BAL in central position).
The signals of the channels grouped together in one group are routed simultaneously to the corresponding line outputs GR OUT 1 / 2. The
total volume of the resulting group is adjusted using the volume controller GR 1-2 (N 49); if the audio signals of the group are to be routed
to the MAIN MIX sum channel, press down on the switch GR TO MAIN MIX (N 18).
18
GR TO MAIN MIX
Route the signal of the channel group GR1-2 to the sum channel MAIN MIX by pressing down on the switch.
19
L-R CHANNEL 1 - 11/12
To route an input channel (channel 1 - 11/12) directly to the MAIN MIX sum channel, press down on the L-R switch of the corresponding channel.
20
FADER CHANNEL 1 - 11/12
Volume controller for channels 1 to 11/12. Push the Fader button upwards to increase the volume of the corresponding channel and down-
wards to decrease it.
21
LINE IN L / R CHANNEL 5/6 - 7/8
Unbalanced inputs for the stereo channels 5/6 and 7/8 with 6.3 mm jacks to connect external devices with line level (e.g. keyboard). If only
the left input jack is used (L), the channel will be mono.
22
LINE IN CHANNEL 9/10 - 11/12
Unbalanced line inputs for the stereo channels 9/10 and 11/12. The RCA sockets can be used as an alternative to the jack sockets of the channel.
23
ST RETURN L / R
Unbalanced stereo line input with 6.3 mm jack sockets for connecting an external effects device (left input = mono), or another source
device with a line level.
24
ST RETURN TO MAIN
Volume controller for the stereo line input ST RETURN (N 23). The ST RETURN signal is mixed directly into the sum channel MAIN MIX.
Turning the dial to the right increases the volume and turning it to the left decreases it.
25
ST RETURN TO AUX1
Volume controller for the stereo line input ST RETURN (N 23). The ST RETURN signal is mixed directly to the AUX 1 output. Turning the dial to
the right increases the volume and turning it to the left decreases it.
26
PHONES
Headphone connection with 6.3 mm stereo jack. Output of the sum channel signal MAIN MIX, of the GR1-2 group, or of PFL. The volume
can be adjusted via the PHONES / CTRL volume controller (N 28) and is independent of the volume of the MAIN MIX volume controller. Use
headphones with a minimum impedance of 30 ohms and make sure that the volume stays at a pleasant level, in order to avoid hearing
damage caused by loud noise.
27
CTRL OUT L / R
Unbalanced stereo line output with 6.3 mm jack sockets to connect active monitors etc... Output of the sum channel signal MAIN MIX, of
the GR1-2 group, or of PFL. The volume can be adjusted via the PHONES / CTRL volume controller (N 28) and is independent of the volume
level of the MAIN MIX and GR1-2 volume controllers.
8