Audibax ADI-20A Aktiv DI-boks Brugermanual

1. Introduktion

Thank you for choosing the Audibax ADI-20A Active DI Box. This device is designed to convert unbalanced, high-impedance instrument signals into balanced, low-impedance signals suitable for professional audio equipment such as mixing consoles and audio interfaces. The ADI-20A features 48V phantom power operation, ensuring optimal signal integrity and versatility in various audio environments, from live stages to recording studios.

2. Sikkerhedsinstruktioner

• Strømkilde: The ADI-20A operates on 48V phantom power supplied by a connected mixer or audio interface. Ensure the phantom power source is stable and within specifications.
• Fugtighed: Do not expose this unit to rain or moisture to prevent fire or electric shock.
• Ventilation: Sørg for tilstrækkelig ventilation omkring enheden. Bloker ikke ventilationsåbningerne.
• Rensning: Rengør kun med en tør klud. Brug ikke flydende rengøringsmidler eller aerosoler.
• Service: Refer all servicing to qualified service personnel. Do not attempt to repair this unit yourself.
• Placering: Place the unit on a stable surface. Avoid placing it near heat sources or in direct sunlight.

3. Produktet er slutview

The Audibax ADI-20A is a high-quality active DI box featuring advanced technology for optimal performance. It offers versatile connectivity and effective signal conversion for a wide range of instruments and audio equipment.

Nøglefunktioner:

• Active DI Box with 48V Phantom Power.
• Stereo operation with independent Left and Right channels.
• 1/4" Jack inputs for instrument signals.
• Balanced XLR outputs for connection to mixers or audio interfaces.
• Switchable PAD (0/-15dBu) for input level attenuation.
• Ground-Lift switch to eliminate hum and ground loop noise.
• 80Hz High-Pass Filter (HPF) to remove unwanted low-frequency rumble.
• 180° Polarity Reverse switch for phase correction.

Kontrol og forbindelser:

Figur 3.1: Samlet set view of the Audibax ADI-20A Active DI Box, highlighting all input/output connections and control switches.

Figur 3.2: Detaljeret view of the input panel, including 1/4" Jack inputs for Left and Right channels, the PAD switch, the 48V phantom power indicator LED, and the HPF switch.

Figur 3.3: Detaljeret view of the output panel, featuring balanced XLR outputs for Left and Right channels and the Ground-Lift switch.

• INPUT (Left/Right): 1/4" TS/TRS Jack inputs for connecting instruments or line-level sources.
• THRU (Left/Right): 1/4" TS/TRS Jack outputs that pass the input signal directly through, allowing connection to an instrument ampapparat eller skærm.
• PAD (0/-15dB): Attenuates the input signal by 15dB to prevent clipping when connecting high-output sources.
• 48V LED: Illuminates when the unit is receiving 48V phantom power.
• HPF (80Hz): Activates an 80Hz high-pass filter to cut unwanted low-frequency rumble or stage støj.
• BALANCED OUT (Left/Right): XLR outputs providing a balanced, low-impedance signal to a mixing console or audio interface.
• LIFT/GND: Ground-Lift switch. Engages or disengages the ground connection between the input and output to eliminate hum caused by ground loops.
• 180° POLARITY REVERSE: Reverses the phase of the output signal by 180 degrees. Useful for correcting phase issues when combining multiple microphones or sources.

4. Opsætning

Follow these steps to set up your Audibax ADI-20A Active DI Box:

1. Tilslut instrument: Connect your instrument (e.g., guitar, bass, keyboard) to the INPUT (Left/Right) 1/4" Jack on the ADI-20A using a standard instrument cable.
2. Opret forbindelse til Ampafdækning (valgfrit): If you wish to send the signal to an instrument ampliber eller stage monitor, connect the THRU (Left/Right) 1/4" Jack to your amplifers input.
3. Tilslut til mixer/interface: Tilslut BALANCED OUT (Left/Right) XLR outputs of the ADI-20A to the XLR inputs of your mixing console or audio interface using balanced XLR cables.
4. Aktivér fantomkraft: Ensure that 48V phantom power is enabled on the corresponding channels of your mixing console or audio interface. The 48V LED on the ADI-20A will illuminate, indicating that the unit is receiving power.
5. Indledende indstillinger: Indstil PAD switch to 0dB, the HPF switch to OFF, the LIFT/GND switch to GND, and the 180° POLARITY REVERSE switch to its normal position (0°). Adjust these settings as needed during operation.

5. Betjeningsvejledning

Once the ADI-20A is connected and powered, you can adjust its settings for optimal performance:

• PAD Switch (0/-15dB): If your instrument or source has a very high output level, and you notice distortion or clipping at the mixer input, engage the -15dB PAD switch. This attenuates the input signal by 15dB, preventing overload. For most instruments, the 0dB setting is appropriate.
• Ground-Lift Switch (LIFT/GND): If you experience a persistent hum or buzz in your audio signal, it may be caused by a ground loop. Try flipping the LIFT/GND switch to the LIFT position. This disconnects the ground connection between the input and output, often resolving ground loop issues. If the hum persists or worsens, return the switch to GND.
• HPF Switch (80Hz): Engager 80Hz HPF switch to activate a high-pass filter. This filter removes frequencies below 80Hz, which can be useful for eliminating unwanted low-frequency rumble, stage vibrations, or excessive bass from certain instruments, resulting in a cleaner and more defined sound.
• 180° Polarity Reverse Switch: This switch reverses the phase of the output signal. It is primarily used to correct phase cancellations that can occur when combining signals from multiple microphones or direct inputs, especially in multi-mic setups or when blending a DI signal with a miked amplifier. Listen carefully and choose the setting that provides the fullest and most coherent sound.

6. Vedligeholdelse

To ensure the longevity and optimal performance of your Audibax ADI-20A:

• Rensning: Brug en blød, tør klud til at rengøre enhedens yderside. Brug ikke slibende rengøringsmidler, opløsningsmidler eller voks, da disse kan beskadige overfladen og de indvendige komponenter.
• Opbevaring: When not in use, store the DI box in a cool, dry place, away from direct sunlight and extreme temperatures.
• Håndtering: Avoid dropping or subjecting the unit to strong impacts, as this can damage internal circuitry.
• Forbindelser: Periodically check all cables and connectors for wear and tear. Replace damaged cables to maintain signal integrity.

7. Fejlfinding

If you encounter issues with your Audibax ADI-20A, refer to the following troubleshooting guide:

• Ingen lyd:
  • Ensure 48V phantom power is enabled on your mixer/interface. The 48V LED on the ADI-20A should be lit.
  • Check all cable connections (instrument to DI, DI to mixer). Ensure cables are fully inserted and not damaged.
  • Verify that the input and output levels on your mixer/interface are set correctly.
  • Test with a different instrument and different cables to rule out external equipment issues.
• Brummen eller summende støj:
  • Engager LIFT/GND switch to the LIFT position. This often resolves ground loop hum.
  • Ensure all audio equipment is connected to the same electrical outlet or power strip to minimize ground potential differences.
  • Kontroller for defekte eller uskærmede kabler.
• Forvrænget lyd:
  • Engager -15dB PAD skifte, hvis dit instrument har et højt udgangsniveau.
  • Reducer input gainen på din mixer/interface.
  • Ensure the instrument's output level is not excessively high.
• Svagt signal:
  • Sørg for -15dB PAD switch is disengaged (set to 0dB).
  • Øg input gainen på din mixer/interface.
  • Check the instrument's output level.

8. Specifikationer

Technical specifications for the Audibax ADI-20A Active DI Box:

Figur 8.1: Dimensions of the Audibax ADI-20A Active DI Box.

9. Garanti og support

Audibax products are designed for reliability and performance. For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official Audibax webwebsted. Gem din købsbevis i tilfælde af garantikrav.

For further assistance, please contact Audibax customer support through their official channels.