Behringer XENYX QX1222USB Mixer User Manual

1. Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of your Behringer XENYX QX1222USB Premium 16-Input 2/2-Bus Mixer. Please read this manual thoroughly to ensure proper usage and to maximize the performance of your device. The XENYX QX1222USB is a premium ultra-low noise, high headroom mixer designed for various audio applications.

2. Key Features

• 2/2-bus mixer with 60mm faders for precise control.
• XPQ 3D Stereo Surround Effect for enhanced spatial audio.
• Voice Canceller Function for karaoke applications.
• FBQ Feedback Detection system to identify and eliminate feedback frequencies.
• 7-band Stereo Graphic EQ for detailed frequency shaping.
• Equipped with XENYX Mic Preamps and Compressors for high-quality audio input.
• Integrated Klark Teknik Multi-FX Processor for a wide range of digital effects.
• USB/Audio Interface for direct connection to computers.

3. What's in the Box

Upon unpacking your Behringer XENYX QX1222USB mixer, please ensure all components are present:

• Behringer XENYX QX1222USB Mixer Unit
• Power Cable
• User Manual (this document)
• Four state-of-the-art XENYX mic preamps (integrated)

4. Setup

4.1 Power Connection

1. Ensure the mixer's power switch is in the OFF position.
2. Connect the supplied power cable to the AC input on the rear panel of the mixer.
3. Plug the other end of the power cable into a suitable AC power outlet.
4. Turn on the mixer using the power switch.

4.2 Input Connections

The QX1222USB offers a variety of input options:

• Microphone Inputs (XLR): Connect microphones to the XLR inputs on channels 1-8. These channels feature XENYX mic preamps. For condenser microphones, activate the +48V phantom power switch.
• Line Inputs (1/4" TRS): Connect line-level devices such as keyboards, drum machines, or other audio sources to the 1/4" TRS inputs.
• Stereo Line Inputs (1/4" TRS/RCA): Channels 9/10, 11/12, 13/14, and 15/16 are designed for stereo line-level signals, offering both 1/4" TRS and RCA connections.
• USB/Audio Interface: Connect the mixer to your computer via the USB port for audio streaming and recording.

4.3 Output Connections

Connect your monitoring and recording devices to the mixer's outputs:

• Main Outputs (XLR): Connect these to your main PA system or studio monitors.
• Monitor Outputs (1/4" TRS): For connecting stage monitors or additional monitoring systems.
• FX Send (1/4" TRS): For sending signals to external effects processors.
• Headphone Output (1/4" TRS): For personal monitoring.

Figure 1: Front view of the Behringer XENYX QX1222USB mixer, showing all controls and inputs.

Figure 2: Rear view of the Behringer XENYX QX1222USB mixer, highlighting power and USB connections.

5. Operating Instructions

5.1 Channel Controls

Each input channel features a set of controls to shape your audio:

• GAIN Knob: Adjusts the input sensitivity for the connected microphone or line source. Set this to achieve a healthy signal level without clipping.
• COMP (Compressor) Knob: Available on microphone channels, this single-knob compressor helps to smooth out dynamic peaks and add sustain to vocals or instruments.
• EQ Section: Each mono channel includes a 3-band equalizer (High, Mid, Low) for tone shaping. Stereo channels typically feature 2-band EQ.
• AUX/FX Send: Controls the amount of signal sent to the internal effects processor or external auxiliary devices.
• PAN/BAL: Adjusts the stereo position of the channel's signal.
• MUTE Button: Mutes the channel's output.
• CLIP LED: Illuminates when the channel's signal is too high, indicating potential distortion. Reduce the GAIN if this LED lights up frequently.
• LEVEL Fader: Controls the overall volume of the channel in the main mix.

5.2 Klark Teknik Multi-FX Processor

The integrated Klark Teknik Multi-FX processor offers a wide array of effects to enhance your sound:

1. Use the PROGRAM knob to select a desired effect preset. The display will show the effect number and name.
2. Press the PROGRAM knob to confirm your selection.
3. Adjust the PARAMETER knob to fine-tune specific aspects of the selected effect (e.g., decay time for reverb, delay time for echo).
4. Use the FX ON button to activate or deactivate the effects.
5. Control the overall level of the effects return to the main mix using the FX RTN fader.

5.3 7-Band Stereo Graphic Equalizer

The built-in 7-band stereo graphic equalizer allows for precise frequency adjustments to your main mix:

• Each slider corresponds to a specific frequency band. Move the sliders up to boost or down to cut frequencies.
• The FBQ Feedback Detection system will illuminate the sliders corresponding to frequencies causing feedback, allowing you to quickly identify and reduce them.

5.4 USB/Audio Interface

The USB/Audio Interface allows for seamless integration with your computer:

• Connect the mixer to your computer using a standard USB cable.
• The mixer will be recognized as an audio device by your operating system.
• You can use the USB connection for recording the main mix to your computer or for playing back audio from your computer through the mixer.

6. Maintenance

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

• Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Avoid using abrasive cleaners or solvents.
• Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and excessive dust.
• Handling: Always handle the mixer with care. Avoid dropping it or subjecting it to strong impacts.

7. Troubleshooting

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

• No Power: Ensure the power cable is securely connected to both the mixer and a working power outlet. Check the power switch position.
• No Sound Output: Verify that all input and output cables are correctly connected. Check channel level faders, main mix faders, and monitor/headphone levels. Ensure any mute buttons are disengaged.
• Distorted Sound: Reduce the GAIN knob on input channels if the CLIP LED is frequently lit. Check for proper impedance matching between sources and inputs.
• Feedback: Utilize the FBQ Feedback Detection system to identify and cut problematic frequencies using the 7-band graphic equalizer. Ensure microphones are not pointed directly at speakers.
• USB Audio Issues: Confirm the USB cable is properly connected. Check your computer's audio settings to ensure the mixer is selected as the input/output device.

8. Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your product or visit the official Behringer website. Keep your purchase receipt as proof of purchase for any warranty claims.