Behringer PRO MIXER DJX900USB Professional 5-Channel DJ Mixer User Manual

Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your Behringer PRO MIXER DJX900USB. This 5-channel DJ mixer features an INFINIUM 'Contact-Free' VCA Crossfader, advanced digital effects, and a built-in USB audio interface for versatile performance and recording capabilities.

Figure 1: Front panel view of the Behringer DJX900USB mixer. This image displays the layout of all controls, including channels, EQ sections, faders, effects, and the master section.

Setup

1. Unpacking and Inspection

Carefully unpack the mixer and inspect it for any signs of damage during transit. Retain the packaging materials for future transport or storage.

2. Power Connection

Connect the supplied power cable to the mixer's power input and then to a suitable AC power outlet. Ensure the power switch is in the OFF position before connecting.

3. Audio Connections

The DJX900USB offers multiple input and output options:

• Microphone Input: Connect a microphone to the XLR input on the top panel.
• Channel Inputs (1-4): Each channel features RCA inputs for Line/CD and Phono sources. Connect your turntables, CD players, or other audio devices. Ensure the correct input type (Phono/Line) is selected via the switch for each channel.
• Master Output: Connect your main sound system or amplifier to the Master RCA or XLR outputs.
• Booth Output: Connect your monitor speakers to the Booth RCA outputs.
• Record Output: Use the Record RCA output to connect to a recording device.

4. USB Connection

Connect the mixer to your computer (PC or Mac) using a standard USB cable. The DJX900USB functions as a USB audio interface, allowing for recording and playback of digital music files without requiring additional drivers or setup.

Figure 2: Close-up of the USB interface logo and port, highlighting the mixer's capability for direct computer connection for audio transfer.

Operating Instructions

1. Channel Controls (Channels 1-4)

• Gain: Adjusts the input level for each channel. Set to achieve a strong signal without clipping (distortion).
• Equalizer (EQ): Each channel has a 3-band EQ (High, Mid, Low) with kill switches for instant frequency cut. Use these to shape the sound of each track.
• Channel Fader: Controls the volume of the individual channel.
• Monitor Cue: Routes the channel's audio to the headphones for pre-listening.

2. INFINIUM 'Contact-Free' VCA Crossfader

The DJX900USB features a high-quality optical crossfader designed for durability and smooth operation. It includes adjustable tension and fader curve settings to suit different mixing styles.

• CF Curve: Adjusts the response curve of the crossfader, from a smooth blend to a sharp cut.
• Assign A/B: Assigns channels to either side of the crossfader.

Figure 3: Detailed view of the INFINIUM 'Contact-Free' VCA Crossfader, showing its robust design and control elements.

3. Digital Effects Section

The mixer includes a 24-bit digital effects processor with advanced parameter control. Use the FX Select/Parameter knob to choose and adjust effects such as delay, flanger, filter, and more. The FX ON button activates the selected effect.

4. Dual Auto-BPM Counter

The intelligent dual auto-BPM counter displays the tempo of tracks on channels A and B, assisting with beat matching. The SYNC LOCK and BEAT ASSIST indicators provide visual feedback for synchronization.

Figure 4: Close-up of the dual auto-BPM counter, showing the digital display and sync indicators for precise beat matching.

5. Microphone Section

• Mic Gain: Adjusts the input level of the microphone.
• Talk Function: Dims the music volume when the microphone is in use, allowing vocals to be heard clearly.

6. Monitoring Section

• Phones Level: Adjusts the volume of the headphone output.
• Monitor Mode: Selects what is heard in the headphones (Cue, Master, or Split).
• Split: Divides the headphone output, sending Cue to one ear and Master to the other.

7. Master Output Controls

• Master Balance: Adjusts the left/right balance of the main output.
• Master Level: Controls the overall volume of the main output.
• Booth Level: Controls the volume of the monitor output.

8. XPQ Surround

The XPQ Surround feature enhances the stereo image, providing a wider and more immersive sound experience. Adjust the Level knob to control the intensity of the effect and use the XPQ ON button to activate/deactivate it.

Figure 5: Close-up of the XPQ Surround control knob and activation button, illustrating the spatial enhancement feature.

Maintenance

1. Cleaning

Regularly clean the mixer's surface with a soft, dry cloth. Avoid using abrasive cleaners or solvents, as these can damage the finish and controls. For stubborn dirt, a slightly damp cloth can be used, followed by immediate drying.

2. Fader Care

The INFINIUM 'Contact-Free' VCA Crossfader is designed for longevity. Avoid applying excessive force or introducing liquids/debris into the fader mechanism. If fader performance degrades, consult a qualified service technician.

3. Storage

When not in use, store the mixer in a cool, dry place, away from direct sunlight and extreme temperatures. If transporting, use appropriate protective casing.

Troubleshooting

• No Sound Output:
  • Check all audio cable connections (inputs, master output, booth output).
  • Ensure the mixer is powered on and the Master Level and Channel Faders are raised.
  • Verify that the correct input source is selected for each channel.
  • Check the volume levels on your amplifier or powered speakers.
• Distorted Sound:
  • Reduce the Gain levels on individual channels and the Master Level.
  • Ensure input sources are not overdriving the mixer.
  • Check for damaged cables.
• USB Audio Not Working:
  • Ensure the USB cable is securely connected to both the mixer and the computer.
  • Verify that the DJX900USB is selected as the audio input/output device in your computer's sound settings or DAW software.
  • Restart your computer and the mixer.
• BPM Counter Inaccurate:
  • The auto-BPM counter works best with clear, rhythmic audio. Complex or unstructured audio may result in less accurate readings.
  • Ensure the signal level for the channel is adequate.

Specifications

What's in the Box

The Behringer PRO MIXER DJX900USB package typically includes:

• Behringer PRO MIXER DJX900USB
• Power Cable
• User Manual (this document)
• Optical VCA Crossfader (pre-installed)
• Digital Effects and USB Interface (integrated)