Behringer DI800 V2 Signal Direct Box Instruction Manual

1. Introduction

The Behringer DI800 V2 is a professional 8-channel direct injection (DI) box designed to connect instruments or other audio sources directly to a mixing console or amplifier. It converts unbalanced, high-impedance signals into balanced, low-impedance signals, suitable for long cable runs without signal degradation. The DI800 V2 offers flexible power options, including mains power or phantom power from a mixing console, and features an ultra-flat frequency response for transparent audio reproduction.

2. Important Safety Instructions

• Read these instructions thoroughly before operating the device.
• Keep these instructions for future reference.
• Heed all warnings on the product and in the manual.
• Do not use this apparatus near water or moisture.
• Clean only with a dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

3. Unpacking and Initial Inspection

Upon receiving your Behringer DI800 V2, carefully unpack the unit and inspect it for any signs of damage that may have occurred during transit. If damage is found, contact your dealer immediately. The package should contain the DI800 V2 unit and a power cable. Ensure all components are present before proceeding with setup.

4. Setup

4.1 Front Panel Overview

Figure 1: Front panel of the Behringer DI800 V2. Each of the 8 channels features an input jack, a link output, a -20dB pad switch, and a ground lift switch. LED indicators show signal presence and phantom power status.

• INPUT (1-8): 1/4" TS/TRS input jacks for connecting instruments or line-level sources.
• LINK (1-8): 1/4" TS/TRS output jacks for connecting the input signal to an amplifier or monitor. This output is parallel to the input.
• -20dB PAD (1-8): Attenuates the input signal by 20dB. Use this for high-output sources to prevent clipping.
• GROUND LIFT (1-8): Disconnects the ground connection between the input and output, which can help eliminate hum or ground loops.
• POWER Switch: Turns the unit on or off.
• PHANTOM POWER LED: Illuminates when phantom power is detected on an XLR output.
• SIGNAL LED: Illuminates when an input signal is present.

4.2 Rear Panel Overview

Figure 2: Rear panel of the Behringer DI800 V2. It features eight balanced XLR outputs and the AC power input.

• BAL OUT (1-8): Balanced XLR outputs for connecting to a mixing console's microphone inputs.
• AC INPUT: Standard IEC power connector for connecting the included power cable.

4.3 Powering the Unit

The DI800 V2 can be powered in two ways:

1. Mains Power: Connect the supplied AC power cable to the AC INPUT on the rear panel and then to a suitable wall outlet.
2. Phantom Power: The unit can also be powered by 48V phantom power supplied from a mixing console via the XLR outputs. If phantom power is present on at least one XLR output, the unit will power on automatically. The PHANTOM POWER LED on the front panel will illuminate.

Note: If both mains power and phantom power are connected, the unit will prioritize mains power. It is recommended to use mains power for consistent operation, especially if phantom power sources are unreliable or vary.

4.4 Connections

• Connect your instrument (e.g., guitar, bass, keyboard) to an INPUT jack on the front panel using a 1/4" TS or TRS cable.
• If you need to send the signal to an amplifier or monitor on stage, connect a 1/4" TS or TRS cable from the corresponding LINK jack to your amplifier's input.
• Connect the BAL OUT XLR output on the rear panel to a microphone input on your mixing console using a balanced XLR cable.

5. Operating Instructions

5.1 Signal Flow

The DI800 V2 takes an unbalanced, high-impedance signal from your instrument, converts it to a balanced, low-impedance signal, and sends it to your mixing console. The LINK output provides a direct, unprocessed copy of the input signal for local monitoring.

5.2 Using the -20dB Pad

If your instrument or audio source has a very high output level, the input signal to the DI800 V2 might be too strong, leading to distortion. In such cases, engage the -20dB PAD switch for the corresponding channel. This will reduce the input signal level by 20 decibels, preventing clipping and ensuring a clean signal to the mixing console.

5.3 Ground Lift Function

Ground loops can cause an audible hum or buzz in your audio system. The GROUND LIFT switch disconnects the ground connection between the input and output stages of the DI800 V2. If you experience hum, try engaging the GROUND LIFT switch for the affected channel. This often resolves ground loop issues without affecting the audio signal.

5.4 Monitoring Signal Presence

The SIGNAL LED for each channel illuminates when an audio signal is detected at the input. This provides a quick visual confirmation that your instrument is connected and sending a signal to the DI box.

6. Maintenance

• Cleaning: Disconnect the unit from power before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
• Storage: Store the DI800 V2 in a cool, dry place away from direct sunlight and extreme temperatures.
• Service: There are no user-serviceable parts inside the DI800 V2. Refer all servicing to qualified service personnel.

7. Troubleshooting

8. Specifications

9. Warranty

For detailed warranty information, please refer to the official Behringer website or contact Music Tribe US support. The warranty typically covers manufacturing defects for a specified period from the date of purchase. Keep your proof of purchase for warranty claims.

Warranty Description: Musictribe. Support.

10. Support

If you encounter issues not covered in this manual or require further assistance, please visit the official Behringer support website or contact Music Tribe US customer service. You can find contact details and additional resources on their official website.

Online Support: Music Tribe Support