JB Systems CONTROL 5.2 Mode D'emploi page 4

ENGLISH
CLEANING THE MIXER:
Clean by wiping with a polished cloth slightly dipped with water. Avoid getting water
inside the unit. Do not use volatile liquids such as benzene or thinner which will
damage the unit.
CONNECTIONS
Except for microphones, headphone and zone outputs, all connections are cinch.
Use good quality cinch-cinch cables to prevent bad audio quality. (example: JB
Systems code: 2-0370)
For more information on connections, please refer to the next chapter.
Be sure to turn off the mixer before you make changes to the different connections.
In this manual we talk about "line inputs". This is a global name for inputs with a level
between 750mV and 2V. This includes tuners, videos, CD-players, etc.
FRONT PANEL
1. DJ MICRO input: The DJ micro can be connected to the XLR/Jack input on the
front plate or to the stereo jack on rear panel. This input is balanced but accepts
any kind of microphone equipped with an XLR or jack connector.
2. TALKOVER level: When you switch the talkover(3) on, you can adjust the
amount of muting on input channels 2 to 5. The more you turn to the right, the
more these channels are muted while talking through the DJ Micro(1).
3. TALKOVER switch: Use this switch to automatically mute the input channels 2 to
5 while you are talking through the DJ microphone. Use the zone selectors(4) to
choose on which output the talkover should work.
Attention: the talkover will only work on the zone you selected for the DJ Micro. The other zone
won't be affected.
4. ZONE switch: for every input channel you can choose to which zone (master) it
should be routed. This means that you can use this mixer to serve two different
rooms with completely different music!
Example:
You want channels 2&3 to be routed to Master A (room1). Channels 4&5 must
be routed to Master B (room2). But you want to be able to make
announcements in both rooms. This is what you should do:
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 Select "zone A" on channels 2&3
 Select "zone B" on channels 4&5
 Select "zone A" and "zone B" on DJ Micro input.
Now you can do announcements in both rooms, while the music you play in
both rooms is completely different.
5. INPUT SELECTOR switch: On channels 2 and 3 you can choose between line
or balanced micro inputs.
6. INPUT SELECTOR switch: On channels 4 and 5 you can choose between line
or balanced micro inputs but you can also connect a turntable. (line/phono switch
on the back)
7. MONO/STEREO switch: used to switch Master A in mono or stereo mode.
8. BALANCE: used to adjust the balance between left and right output on Master A.
9. VU-meters: Used to monitor the level of the audio signals selected with the CUE
selector(13). With the channel faders you can change the input level of each
connected audio source. Make sure the levels do not exceed 0dB (or 100%). The
audio risks to be distorted when the signal level comes in the red zone of the VU-
meter.
10. MONO/STEREO switch: used to switch Master B in mono or stereo mode.
11. BALANCE: used to adjust the balance between left and right output on Master B.
12. POWER switch: Used to turn the power of the mixer on and off.
13. CUE SELECTOR switch: Used to select the source you want to monitor. You
can listen to any input channel while its channel fader is closed.
14. CUE LEVEL: Used to control the output level of the headphone output.
15. HEADPHONE jack: You can connect any modern stereo headphone to this
6.3mm jack. Together with the cue selector (13) and the cue level (14) you can
use it to listen to the selected input channel.
16. MASTER B level: Used to adjust the output level of Master B.
17. 3BAND TONE control: use these 3 controls to modify the audio signal of Master
B to your personal taste.
18. MASTER A level: Used to adjust the output level of Master A.
19. 3BAND TONE control: use these 3 controls to modify the audio signal of Master
A to your personal taste.
20. GAIN controls: Used to set the sensitivity of each channel separately. Based on
the information from the VU meters(9) and the peak led(22) you can adjust the
channel sensitivity.
21. CHANNEL FADERS: Used to set the level of each channel separately.
22. PEAK & SIGNAL LEDS: all channels are equipped with a peak and signal led:
 Signal led: The green signal led indicates that a music signal is present at this
channel input.
 Peak led: The red peak led indicates that the input signal is too high. Make sure
that the peak led only turns on from time to time. When the peak led is on for
longer periods, you are urged to lower the input signal using the GAIN
control(20).
23. 3BAND TONE control: you can use these 3 controls to modify the audio signal of
the DJ micro to your personal taste or to remove feedback from the microphone.
Note: Feedback is where an acoustic signal is amplified over and over again until it develops
rapidly into a loud screech: Reduce the gain on your microphone channel and/or try cutting HF
from your tone controls.
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