ENGLISH
OPERATION MANUAL
JB SYSTEMS
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MX3 USB
CONNECTIONS
Except for microphone and headphone outputs, all connections are cinch. Use good quality cinch-cinch
cables to prevent bad audio quality.
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 up to 2V. This includes
tuners, videos, CD-players, etc.
Both USB connections will be detected as a sound card on your computer. These connections are
bidirectional (play/record music simultaneously)
CONTROLS AND FUNCTIONS (
FRONT)
ENGLISH
OPERATION MANUAL
JB SYSTEMS
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MX3 USB
1. DJ MIC INPUT JACK:
Accepts an unbalanced microphone with 1/4” mono jack. This input is mainly
used as DJ-microphone.
2. 2-BAND TONE CONTROL:
The frequency of the DJ mic can be controlled over a +/-12dB range.
3. DJ MIC VOLUME:
Used to adjust the level of the DJ mic.
4. MIC SWITCH:
Used to switch the microphone:
OFF
ON
TALK OVER:
mic switched on; the sound level of all the other channels will decrease to
around -14dB
5. PFL SELECTOR:
Used to select the source (CH-1 to CH-3) to be monitored via the headphones output.
Pressing multiple Cue-buttons makes it possible to derive a mixed sound from the selected sources.
6.
CHANNELFADER:
Used to set the level of each channel separately.
7.
INPUT SOURCE SELECTOR:
Used to select the correct input on each channel: Phono, line or USB.
8. GAIN LEVEL:
Adjusts the input level on each channel.
9. 3-BAND TONE CONTROLS:
The frequency of each channel can be controlled separately over a range
from -26dB to +12dB. In the center position the tone control is flat. (switched off)
10. CROSSFADER:
With this fader you can mix over between the channels 1 & 3. The crossfader only
works when you move the channel faders (6) to the desired level!
11. MASTER LEVEL:
Used to adjust the level of the Master output.
12. MASTER VU METERS:
Monitors the output level. Make sure the levels do not exceed 0dB (or 100%).
The audio will be distorted when the signal level comes in the red zone of the VU-meter.
13. CUE MIX:
With this knob you can mix the master output and any of the input channels through the
headphone output (15):
Put the knob in the extreme left position to monitor a selected PFL signal (7).
Put the knob in the extreme right position to hear the master output.
Put the knob in any other position to hear a mix of the two signals.
This option makes it possible to check your mix before you put it on the master output.
14. CUE LEVEL:
Used to control the output level of the headphone output.
15. HEADPHONE JACK:
You can monitor all inputs/outputs when you connect any modern stereo
headphone to this 6.3mm jack.
16. POWER SWITCH:
Used to turn the power of the mixer on and off. The blue led is lit when the mixer is
turned on.
CONTROLS AND FUNCTIONS (
rear)
17. POWER SUPPLY:
connect the supplied AC adapter to this input. Before use, inspect the cable to be
sure it’s not damaged!
18. MASTER OUTPUT:
Use output to connect amplifiers.
19. RECORD OUTPUT:
Carries the same signal as the master output but is not influenced by the master
level. Used to connect analog recording equipment. You can also connect a computer for direct digital
recording, see USB connections (20).
20. USB CONNECTIONS:
two bidirectional USB connections (USB1 for CH1 ~ USB2 for CH3). You can
connect any PC through these USB connections. The PC/Mac will detect your mixer as a sound card,
normally no drivers are needed. Since both USB ports are bidirectional you are able to play music on
