Controls And Functions - JB Systems BEAT4 USB Mode D'emploi

ENGLISH
CONNECTIONS
Except for microphones, headphone and master 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 (

1. DJ MIC INPUT: Accepts a balanced microphone with an XLR connector. This input is mainly used as
DJ-microphone. The talk over does not affect the signal level of this input.
2. TALKOVER: Use the switch to automatically mute the input channels 2 to 4 while you are talking
through the DJ microphone.
3. PFL SELECTOR: Used to select the source (CH-1 to CH-4) to be monitored via the headphones output.
Pressing multiple Cue-buttons makes it possible to derive a mixed sound from the selected sources.
4. CHANNEL FADER: Used to set the level of each channel separately. You can easily exchange this
fader with a new one. Later in this manual we explain how to do this.
5. PFL VU METERS: Monitors the level of the channel you selected with the PFL-switch (3). 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.
6. INPUT SOURCE SELECTOR: Used to select the correct input on each channel: Phono, line, USB, aux
or mic. On some channels there are additional input selectors on the back.
Hint: Line, Aux, CD, Tuner, etc... are different names for inputs with almost the same signal levels.
7. GAIN LEVEL: Adjusts the input level on each channel. Use this control to adjust the level on the VU-
meter at about 0dB.
8. 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)
9. BEAT COUNTER DISPLAY: Shows the number of beat per minute (BPM) of the music on the channel
selected with the crossfader assign selector (12). To have a reliable result on the display the music must
have a clear and steady beat.
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10. FADER START ON/OFF SWITCH: When you have a compatible CD-player connected to the fader
control connectors, you can control its start/stop (re-cue) functions with the cross fader. With this switch
you can turn the fader start control on and off.
11. CROSSFADER: With this VCA fader you can mix over between the channels you selected with the
crossfader assign selectors (12). The crossfader only works when you move the selected channel faders
(4) to the desired level! The crossfader also integrates the optical fader starts. See the next chapter for
more information on this issue.
12. CROSSFADER ASSIGN: Selects the input channels to be used with the crossfader (11) and beat
counters (9). When set to "0" the crossfader is switched off.
13. MASTER1 LEVEL: Used to adjust the level of the balanced Master1 output.
14. BALANCE MASTER1: used to adjust the balance between left and right output on Master1.
15. MASTER2 LEVEL: Used to adjust the level of the unbalanced Master2 output.
16. MASTER1 VU METERS: Monitors the output level of master1. 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.
17. CUE MIX: With this fader you can mix the master output and any of the input channels through the
headphone output (19):
 Put the fader in the extreme left position to monitor a selected PFL signal (3).
 Put the fader in the extreme right position to hear the master output.
 Put the fader 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.
18. CUE LEVEL: Used to control the output level of the headphone output.
19. HEADPHONE JACK: You can monitor all inputs/outputs when you connect any modern stereo
headphone to this 6.3mm jack.
20. CROSS FADER CURVE: Adjusts the curve of the cross fader from smooth (left position) to sharp (right
position).
21. 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 (
22. MAINS CABLE: connect this cable to a 230V/50Hz mains outlet. Before use, inspect the cable to be
sure it's not damaged!
23. FADER CONTROL: When connected to these inputs, compatible CD-players can be controlled by the
fader starts of this mixer.
24. MASTER1 BALANCED OUTPUT: The XLR-connectors can be used to connect this mixer to any
balanced amplifier input, using special balanced signal cables.
25. MASTER UNBALANCED OUTPUTS: The "master 1" output has the same output signal as the
balanced master output(24) but unbalanced. The "master 2" output carries the same signal but can be
controlled independently by the master2 level (15). Use the outputs to connect unbalanced amplifiers.
26. RECORD OUTPUT: Carries the same signal as the master outputs but is not influenced by the master
level and balance controls. Used to connect analog recording equipment. You can also connect a
computer for direct digital recording, see USB connections (34).
27. INPUT CHANNELS: each used to connect two different line level audio signals. Refer to switch (28) to
change one line input to phono level. The input source selector (6) on the front determines which input
will be active.
28. PHONO/CD SWITCH: This switch makes it possible to switch between the CD and phono level inputs
on channels 2, 3 and 4.
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