Behringer PRO MIXER DJX750 User Manual

1. Introduction

The BEHRINGER PRO MIXER DJX750 is a professional 5-channel ultra-low noise DJ mixer designed for intuitive operation with built-in digital effects processing. It delivers clean, transparent sound, making it suitable for various DJ applications from home setups to professional club environments. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your DJX750 mixer.

Figure 1: Behringer PRO MIXER DJX750 Overview

This image displays the overall front view of the Behringer PRO MIXER DJX750, highlighting its compact and professional design. It shows the layout of the channels, faders, and main controls.

2. Key Features

• State-of-the-art 24-bit Digital Effects: Features 33 outstanding effects including Phase Shifters, Flangers, Reverbs, Delays, Auto Filter, and Voice Changer, with advanced parameter control for real-time adjustments.
• Intelligent Dual Auto-BPM Counter: Provides time and beat sync display to assist with seamless track transitions.
• Super-smooth Ultraglide Faders: Designed for durability with up to 500,000 life cycles, ensuring long-term reliability.
• Adjustable XPQ Stereo Surround Effect: Widens the stereo field, adding depth and a vibrant stereo image to your sound.
• VCA-controlled Crossfader: Ensures utmost reliability and smooth audio performance with virtually no audio noise.
• Adjustable Crossfader Curve (CF Curve): Allows customization of the crossfader's control characteristic to suit various mixing styles.
• 3-band Kill EQ (-32 dB) and Precise Level Meters: Available per channel with peak hold function for accurate level monitoring.
• Dedicated Mic Channel: Equipped with a 3-band EQ (80 Hz, 2.5 kHz, 12 kHz) for vocal fine-tuning.
• Monitor Function: Includes master/cue balance control and a split option for flexible monitoring.
• Auto-talkover Function: Automatically ducks the music volume when the microphone is in use, with separate depth control.
• ULN (Ultra Low-Noise) Preamps: Ensures maximum headroom, extremely low noise, and ultra-transparent sound quality.

3. Setup

Follow these steps to set up your Behringer PRO MIXER DJX750:

1. 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.
2. Connecting Audio Sources:
   • Connect your CD players, turntables, or other line-level devices to the RCA inputs (LINE/CD/PHONO) on Channels 1-4. Ensure you select the correct input type (LINE or PHONO) using the switch above each channel's input.
   • Connect your microphone to the XLR or 1/4-inch TRS input on the Mic channel.
3. Connecting Outputs:
   • Main Output: Connect the MAIN OUTPUT RCA jacks to your amplifier or powered PA system.
   • Booth Output: Connect the BOOTH OUTPUT RCA jacks to your booth monitor speakers.
   • Headphone Output: Plug your headphones into the 1/4-inch headphone jack on the front panel.
4. Power On: Once all connections are secure, switch the power button to the ON position.

Figure 2: Rear Panel Connections

This image illustrates the rear panel of the DJX750, showing the various input and output connections for audio sources, main outputs, and effects loops.

4. Operating Instructions

4.1 Controls Overview

Figure 3: Detailed Control Layout

This image provides a close-up view of the Behringer PRO MIXER DJX750's top panel, detailing the knobs, faders, and buttons for each channel, the effects section, and the master controls.

4.2 Mic Channel

• GAIN: Adjusts the input sensitivity for the microphone.
• HIGH/MID/LOW: 3-band equalizer for shaping the microphone's tone.
• MIC ON/OFF: Toggles the microphone signal.

4.3 Input Channels (1-4)

• LINE/CD/PHONO Switch: Selects the input source for the channel.
• GAIN: Adjusts the input level for each channel.
• HIGH/MID/LOW: 3-band kill EQ for frequency manipulation.
• Channel Fader: Controls the volume level of each channel.

4.4 Digital Effects

• FX SELECT/PARAMETER: Rotary encoder to select from 33 built-in effects and adjust their parameters.
• FX ON: Activates the selected effect.
• Parameter Control: Adjust effects parameters such as Bit Crusher depth, manual filter sweeps, Panning (LFO Rate), and delay/echo time.

4.5 BPM Counter

• Dual Auto-BPM Counter: Displays the beats per minute for two channels, aiding in beatmatching.
• BEAT ASSIST: Allows for manual tapping of the tempo if auto-detection is not precise enough.

4.6 Crossfader

• VCA-controlled Crossfader: Smoothly blends between assigned channels (A and B).
• CF CURVE: Adjusts the crossfader's response curve from a sharp cut to a smooth fade.

4.7 XPQ 3D Surround

• SURROUND Control: Adjusts the intensity of the XPQ 3D stereo surround effect, widening the soundstage.

4.8 Monitor Section

• MODE Switch (Split/Stereo): Selects the headphone monitoring mode. In Split, PFL is on the left, Master on the right. In Stereo, MIX control blends PFL and Master.
• MIX Control: Blends between the PFL (Pre-Fader Listen) signal and the Master output in Stereo monitor mode.
• LEVEL Control: Adjusts the headphone output volume.

4.9 Auto-Talkover (Ducking)

• TALK Button: Activates the talkover function.
• DEPTH Control: Adjusts how much the music volume is reduced when the microphone is active.

5. Maintenance

To ensure the longevity and optimal performance of your DJX750 mixer, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Avoid using abrasive cleaners, solvents, or waxes, as they can damage the finish and controls.
• Dust Protection: Keep the mixer covered when not in use to prevent dust accumulation, especially on faders and knobs.
• Ventilation: Ensure proper ventilation around the unit to prevent overheating. Do not block ventilation openings.
• Storage: Store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
• Fader Care: While Ultraglide faders are durable, avoid excessive force or spills on them.

6. Troubleshooting

If you encounter issues with your DJX750, refer to the following common problems and solutions:

• No Sound Output:
  • Check all cable connections (power, inputs, outputs).
  • Ensure the master volume and channel faders are up.
  • Verify input source selection (LINE/PHONO) for each channel.
  • Check if the crossfader is assigned correctly and not cutting off the sound.
• Distorted Sound:
  • Reduce input GAIN levels if the channel or master level meters are consistently peaking into the red.
  • Check for damaged cables or faulty audio sources.
• BPM Counter Inaccurate:
  • The auto-BPM counter is a guide; for precise beatmatching, rely on your ears and use the BEAT ASSIST button for manual input.
  • Ensure the music signal is clear and strong.
• Effects Not Working:
  • Ensure the FX ON button is engaged.
  • Verify that an effect is selected and its parameters are adjusted appropriately.
• Microphone Not Working:
  • Check microphone connection and ensure it is powered if it's a condenser mic requiring phantom power (DJX750 does not provide phantom power, use dynamic mics or external phantom power).
  • Ensure MIC ON/OFF switch is engaged and GAIN is adjusted.

7. Specifications

8. What's in the Box

Upon unboxing your Behringer PRO MIXER DJX750, you should find the following items:

• Behringer DJX750 Pro Mixer
• Power Cable
• User's Manual (this document)

9. Warranty and Support

For warranty information and technical support, please refer to the official Behringer website or contact their customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.