ENGLISH
USER MANUAL
JB SYSTEMS
5/8
LIVERACK-10
the instruments or other sources connected to the inputs. When a channel is not being used, its fader
should be set at the minimum position to prevent the addition of unwanted noise to the main program
signal
10. [LOW CUT] filter button:
this button can be used to cut frequencies below 80Hz. This can be useful to
decrease popping of microphones or to avoid low feedback from acoustic instruments. If you use
subwoofers, activating this filter removes the input source from the subwoofers. It helps to create a
cleaner mix.
11. [PAN] knob:
This control pans the channel signal across the master L and R busses, thus determining
the perceived position of the sound from that channel in the output stereo sound field. If a PAN control is
set all the way to the left, for example, the sound from that channel will be heard from the left speaker
system only. If it is set all the way to the right, the sound will be heard from the right speaker system
only. Intermediate settings will cause the sound to appear at corresponding locations in the stereo sound
field
12. [PEAK] LED indicator:
This LED indicator shows the level of the signal input of the stereo channel 9/10.
The peak indicator lights up when the input signal reaches 5dB below the channel’s clipping point. This
indicator shows the level of the Post-EQ/ pre-fader signal. If the PEAK indicator lights more than briefly
on high-level transients, you should reduce the output level of the connected source.
13. [STEREO IN]
connector:
this minijack can be used to connect a tablet or phone via wire
14. Channel LEVEL:
This is the channel’s main level control for the media player, usb stick or computer
input, mini-jack stereo input on the front panel (13) or stereo input on the back (35). It determines the
level of the signal that is sent from the channel to the master mixing and post fader effect busses (AUX
and internal effect module). When the channel is not being used, its should be set at the minimum
position to prevent the addition of unwanted noise to the main program signal
15. Effect [PARAMETER] knob:
this knob can be used to adapt the selected effect to your taste by
adjusting it’s parameters. (longer effect, shorter effect, etc.)
16. [CH9/10 or USB] switch:
with this switch you can select the audio source for channels 9/10
•
= RCA input on the rear / Stereo input on the front
•
= USB Stick (internal player) / computer / Bluetooth
17. PHANTOM Power switch:
This switch toggles the phantom power on or off.
Set this switch on when using one or more condenser microphones that need to receive external power from the
mixer. When this switch is on, the mixer supplies DC +48V power to pins 2 and 3 of all XLR-type MIC INPUTS.
•
Be sure to leave this switch off
if you do not need phantom power
•
When tuning the switch on
, be sure that only condenser MICs are connected to the XLR input
WARNING:
Devices other than condenser MICs may be damaged if connected to the phantom power supply.
However, the switch may be left on without problem when connecting balanced dynamic microphones.
To avoid damage to speakers, be sure to turn off the amplifiers (or powered speakers) before turning this switch on
or off. We also recommend that you turn all out controls (MAIN master fader, AUX send, etc.) to minimum settings
before operating the switch, to avoid risk of loud noises that could cause hearing loss or device damage.
18. [AUX] send knob:
controls the general level of the AUX output. This Post Fader output is influenced by
the blue AUX level knobs and the channel level knobs/faders. The effect is not sent to this output.
19. Aux [RETURN]:
controls the level of the AUX input that will be sent to the main outputs
20. USB connector:
can be used to connect a storage device (USB stick) or a computer
•
USB stick: for the recording of the main mix (mp3) or for the playback of
WMA, WAV, FLAC, APE and
MP3 files
•
PC: use a USB-A / USB-A cable to connect a computer. This port is bidirectional, so you can playback
music from your computer or use the computer to record the main mix output
21. Internal player:
by pressing the
[MODE] button shortly you can scroll through the different working modes:
•
[NO]
: when you are in the internal player mode and no USB stick is connected to the unit, the display will
show [NO]
•
[USB]
: when an USB stick is connected to the unit, the display will show [USB] shortly. The music on the
stick will start playing automatically. The 3 other buttons of the internal player are now active:
o
Play/Pause/REC button: can be used to start or pause the playback of a song
o
Back/- button:
▪
press it shortly to go to the previous song on the USB device.
▪
press it longer to decrease the playback volume
o
F button:
▪
press it shortly to go to the next song on the USB device.
▪
press it longer to increase the playback volume (max = 30)
o
Loop mode: it is possible to select a loop for 1 song or for ALL songs. Press the [MODE] button for
a while and one of these options will appear. To go to the other option, press the [MODE] button
again for a longer period (no short pressing)
▪
[ONE]: only one song will be played in a loop.