Behringer DJX400 Master section, Crossfader section, Front panel connectors, Auto BPM Counter

PRO MIXER DJX400

happen, the MASTER signal is the only one that would be heard. The MASTER signal is taken post MASTER LEVEL control, whereas the signals from the two input channels are pre CHANNEL faders and are routed to the MONITOR section.

MONITOR SELECT			Headphones output
CH-1	CH-2	MASTER	L	R
ON	OFF	OFF	CH-1 "L"	CH-1 "R"
OFF	ON	OFF	CH-2 "L"	CH-2 "R"
OFF	OFF	ON	MASTER "L"	MASTER "R"
ON	ON	OFF	CH-1 "L" + CH-2 "L"	CH-1 "R" + CH-2 "R"
ON	OFF	ON	CH-1 "MONO"	MASTER "MONO"
OFF	ON	ON	CH-2 "MONO"	MASTER "MONO"

Table 2.1: Selecting a signal with the Monitor Select button

2.4 MASTER section

The LEVEL METER displays the signal level selected with

.

With this switch you determine whether it is the MASTER or the MONITOR signal to be indicated on the LEVEL METER. When the MONITOR LED lights up, it indicates the level of the headphones signal.

+In monitor mode, the LEVEL METER displays the channel 1 signal on the left and the channel 2 signal on the right.

This is the MASTER LEVEL control to adjust the output volume at the MASTER output (see ).

The SURROUND control determines the intensity of the XPQ 3D surround effect (see Chapter 2.7).

2.5 CROSSFADER section

The CF CURVE switch, to the right of the CROSSFADER, allows you to put the fader control character in two stages. In SOFT mode the volume is controlled evenly over the whole slide. In SHARP mode the volume control is limited to the outer portions of the slide. Naturally, a difference in volume can occur when switching modes. Thus, don’t use this switch when the music is on!

The CROSSFADER is for crossfading between channels 1 and 2. The CROSSFADER, like the CHANNEL fader, is also a professional 45 mm fader.

The TIME OFFSET LED indicates the synchronisation of channels 1 and 2 (see Chapter 2.8).

The TEMPO DIFFERENCE LED displays tempo differences between the signals from channel 1 and 2 (see Chapter 2.8).

The BEAT ASSIST button is for manually determining the tempo for channels 1 and 2 (see Chapter 2.8).

2.6 Front panel connectors

Fig. 2.2: Headphones and microphone connector

The MIC IN connector is the balanced jack input for a dynamic microphone.

+We strongly discourage the use of cheap plugs for transmitting audio signals. Please use only high-quality plugs as these provide the best corrosion protection.

The PHONES OUT connector is for you to listen to bits of music with your headphones (MONITOR signal). Your headphones should have a minimum impedance of 32 ohms.

2.7 XPQ 3D surround effect

The XPQ 3D surround function is a built-in effect that puts the finishing touches to your music and turns every gig into a real experience. The widening of the stereo base makes for a livelier, more transparent sound. You select the intensity of the effect with the XPQ SURROUND control.

2.8 Auto BPM Counter

The PRO MIXER DJX400 auto BPM counter is an extremely useful feature. It ensures smooth transition from one track to the next, making your session an absolute success. It can calculate the various tempi of tracks in bpm (beats per minute). The channel 1 and channel 2 BPM counter sections are identical.

Each channel’s DISPLAY indicates the track tempo. Several tempo changes in one track would produce a constant display of various BPM values and thus lead to unnecessary confusion. That’s why the beat counter sections each have a SYNC LOCK

button that can be used during the song to limit the range of possible tempo values. This makes sense if the counter has already calculated a realistic value. You can do the same thing manually with the BEAT ASSIST button . Pushing this button at least three times in sync with the song’s tempo results in the calculated tempo appearing in the DISPLAY. The BEAT ASSIST and SYNC LOCK buttons are each equipped with a LED.

When you have limited the tempo of the tracks on both channels with the SYNC LOCK or BEAT ASSIST buttons, the difference in tempo from channel 1 and channel 2 is illustrated in the form of a nine-character message on the TEMPO DIFFERENCE-LED . The extent of the difference in tempo is indicated by a corresponding swing to the right (the channel 1 signal is slower) or to the left (the channel 2 signal is slower). When the middle LED lights up, the tempi are the same. The TIME OFFSET LED below that displays the channel 1 and 2 synchronisation. Should the middle LED light up, the tracks are synchronised. Should the display move to the left or right, either channel 1 or channel 2 is not synchronised. The TEMPO DIFFERENCE and TIME OFFSET displays are only active if the tempi of both channels have been fixed in one of the ways described.

6 2. CONTROL ELEMENTS