Depusheng MG8 8-Channel Professional Audio Mixer User Manual

1. Introduzione

Grazie per l'acquistoasing the Depusheng MG8 8-Channel Professional Audio Mixer. This device is a concert-grade mixing console designed for various audio applications, including stage performances, live shows, and parties. It features an 8-channel input, built-in 256 DSP effects, Bluetooth and USB connectivity, and a 7-band graphic equalizer for precise sound control. This manual provides detailed instructions to help you set up, operate, and maintain your audio mixer effectively.

Please read this manual carefully to ensure proper usage and to fully understand the product's capabilities. Keep it in a safe place for future reference.

2. Precauzioni di sicurezza

WARNING: To avoid serious injuries caused by electric shock, short circuit, injuries, fires or other dangers, be sure to meet the following basic precautions.

• Non aprire: This device does not contain user-serviceable parts. Do not open or attempt to disassemble its internal components. If an exception occurs, stop using it immediately and contact qualified maintenance personnel.
• Posizionamento: Do not place this equipment in an unstable location where it could fall. Avoid environments with corrosive gases, salt, excessive dust, vibration, or extreme temperatures (direct sunlight, near heating devices, or in a scorching car).
• Umidità: Do not use the equipment in rain or near water. Avoid placing liquid containers on the device. If liquid enters the device, immediately cut power, unplug all cables, and contact maintenance personnel. Do not handle connected cables with wet hands.
• Connessione: Before connecting this device to other equipment, turn off the power switch of all equipment. Adjust all volume levels to the minimum before turning on or off any equipment.
• Manutenzione: Always unplug all product connection cables before cleaning the device. Use a soft, dry cloth for cleaning; do not use coatings, solvents, cleaning liquids, or chemical towels.
• Operazione: Do not use this device near TVs, radios, stereo equipment, mobile phones, or other electronic devices to prevent noise interference. Avoid placing ethylene, plastic, or rubber objects on the machine to prevent discoloration.
• Condensazione: If condensation occurs due to rapid temperature changes, do not use the device. Allow several hours for the condensation to disappear completely before turning on the power.
• Livelli sonori: Do not set any equalizer or attenuator to the maximum position, as this may damage connected speakers due to feedback. Avoid using speakers or headphones at high or uncomfortable volume levels for extended periods to prevent permanent hearing damage. Seek medical attention if you experience hearing damage or tinnitus.
• Oggetti estranei: Do not insert fingers or hands into any space or opening. Prevent foreign objects (paper, plastic, metal, etc.) from falling into the device. If this happens, immediately turn off power, unplug all cables, and contact maintenance personnel.
• Power Sequence: When turning on the audio system, always turn on the power amplifier last to avoid damaging speakers. When turning off, turn off the power amplificatore per primo.
• Situazioni anomale: If any of the following occur, immediately turn off the power, unplug all cables, and contact maintenance personnel: damaged power cable/plug, objects falling into the device, unusual smell or smoke, or sudden interruption of sound.

3. Caratteristiche del prodotto

• 8-Channel Audio Mixer: Includes 8 XLR+6.5MM inputs and 1 RCA recording input.
• Controllo indipendente: Each channel features an independent mute button.
• Alimentazione Phantom 48V: A master switch controls the mixer's power, and a dedicated +48V phantom power switch is available for condenser microphones.
• Riproduzione multiformato: Supports Bluetooth connectivity for mobile phones, tablets, etc., and USB flash memory for direct playback of MP3, WAV, APE, and other audio formats.
• USB OTG Conversion: The USB flash memory interface can be connected to a mobile phone for OTG conversion for live streaming.
• Funzione REC: Record your favorite songs directly to a USB flash drive through the mixer.
• Built-in 256 DSP Effects: High-quality 256 DSP effects processor with parameter adjustable sound effects, suitable for various scenarios.
• Equalizzatore grafico a 7 bande: Effective and musical 7-band balanced total volume adjustment for precise sound control.
• 3-Band Channel Equalizer: Each channel has a 3-section equalizer (Hi, Mid, Low) for individual tone adjustments.
• Monitoraggio: 12-seconditage double level monitoring, PAN sound image positioning, and signal distortion monitoring light.
• AUX & FX Sends: AUX auxiliary shipping and FX shipping effect for external processing or monitoring.
• Input di ritorno: RCA connection return input for additional audio sources.
• Headphones Monitoring: Dedicated headphones interface for real-time monitoring.
• Alimentazione universale: Compatible with American, European, Australian, and British standard power supplies.

4. Controlli e funzioniview

This section details the various controls and interfaces on your Depusheng MG8 mixer.

Figure 4.1: Depusheng MG8 Mixer Control Layout

1. Microphone Input Interface (XLR/6.5mm Mono Input): Used to connect microphones, instruments, or external audio equipment. The multifunctional plugs accept both XLR and 6.5mm Phone type connectors.
2. Regolatore di guadagno: Adjusts the input signal level for each channel. This knob regulates the sensitivity of the microphone and line input signals to conform to the ideal internal control level.
3. EQ Balance (3-Band Equalizer):
   • [HI] Treble Tone Controller: Controls the high-frequency band signal. Adjust the knob from the 12 o'clock position to increase or attenuate signals on the 12KHz channel.
   • [MID] Alto Tone Controller: Controls the mid-frequency band signal. Adjust the knob from the 12 o'clock position to increase or attenuate signals on the 2.5KHz channel.
   • [BASSO] Controller del tono dei bassi: Controls the low-frequency band signal. Adjust the knob from the 12 o'clock position to increase or attenuate signals on the 80Hz channel, improving bass and other musical instruments' effects.
   

   Figure 4.2: 3-Band EQ Equalizer Curves
4. AUX Auxiliary Assistant (AUX Controller): Controls the auxiliary sending signal size of this channel. The signal is sent to external devices (e.g., effects processors) via the main AUX Send knob. It can be used for effect levels or independent music mixes in recording rooms/stages.
5. FX Auxiliary Effect (FX Controller): Sends signals from each channel to the internal effects processor and returns them to the main stereo channel.
6. PAN Sound Image Positioning (PAN Controller): Adjusts the left and right distribution of the sound source in the stereo mix.
7. MUTE Mute + PEAK Indicator:
   • Tasto MUTO: Silences the channel when pressed. Useful for switching channels or isolating unused channels.
   • PK Light: (Shared with MUTE light) Illuminates red when the input signal of the channel is too high, indicating distortion. The PK light is only active when the MUTE key is not pressed.
8. Volume Fader (Channel Faders): Controls the individual channel volume levels.
9. DC-12A Power Input Socket: Connects to the DC power cable. Ensure the power adapter is connected to a standard AC 100-240V, 50Hz/60Hz outlet.
10. Ignition Switch (Power Switch): Turns the machine on or off. Set to 'I' for ON, 'O' for OFF.
11. AUX/FX Output Interface: TRS impedance-balanced output plugs for connecting to monitoring systems or external effects equipment.
12. Return Input Interface: An interface for connecting external effect devices or additional audio sources.
13. Recording Mode (Tape Input/Output):
    • Ingresso: Uses non-balanced RCA (Tape Input) for stereo line signals from recorders, CD players, MP3 players, etc.
    • Produzione: Uses non-balanced RCA (Tape Output) to send mixed signals to a recording device.
14. Headphone Monitor Connector (Phones Headphones Interface): Connects headphones. Supports stereo phone plugs. Use a conversion adapter for mini plugs.
15. Main Output (BAL/UNBAL Output): XLR and balanced TRS output plugs for mixed output signals. These signals are adjusted by the main stereo thrust and connect to the main speaker power amppiù vivace.
16. USB Flash Memory Interface (USB OTG): Built-in MP3 Player for direct playback of songs or audio files from a USB flash drive. Can also connect to a mobile phone with OTG conversion for live broadcasting.
17. BT/MP3 Playback (USB Interface): Integrated core supports MP3, WAV, APE, and other audio formats. Features Bluetooth 4.2 (2.1+EDR). Can function as a USB sound card when connected to a computer via USB cable for music playback and recording. Controls include: Previous/Next Song, Play/Pause, Mode (USB playback/recording, Bluetooth conversion).
18. LED Light Level Indicators (Left/Right Level): Two LED light arrays indicate the left and right output levels, using three colors to show different levels.
19. Power Feed Light: Illuminates when the mixer's power switch is ON.
20. +48V Phantom Power Switch and LED Light: When ON, the +48V LED illuminates, providing DC+48V power to XLR plug devices (e.g., condenser microphones). Always turn OFF when not needed. When connecting/disconnecting cables, ensure the switch is OFF. Before turning ON/OFF, pull the channel's fader to the bottom.
21. 7-Band Equalizer (Stereo Graphic Equalizer): Provides 7 frequency tone controls per channel for high-quality precise sound control.
22. AUX Knob (AUX Output Volume Adjustment): Controls the overall level of the signal sent from the AUX output.
23. FX Knob (FX Output Volume Adjustment): Controls the overall level of the signal from the FX output.
24. Auxiliary Stereo Auxiliary (Return Input Interface): Allows a part of the stereo sound to return the signal to AUX, enabling processed signals to be transmitted to another processor or stage monitorare.
25. Headphones Adjustment Knob/Monitoring: Adjusts the volume of headphones and monitor speakers connected to the headphone output.
26. Tape/MP3 Volume Fader: Controls the volume of signals from Tape Output and MP3 playback.
27. Effect Volume Fader: Controls the amount of reverberation from the effects returning to the main channel bus, adjusting the overall effect volume.
28. Main Fader (Main Channel Fader): Controls the main mix level and output level of the main line. Adjust carefully to ensure the level meter is not overloaded and the output level is suitable for the audience.

5. Guida all'installazione

Follow these steps to set up your Depusheng MG8 audio mixer.

Figure 5.1: Packing List (Mixer, User Manual, Power Cord)

5.1 Collegamento di alimentazione

1. Ensure the mixer's power switch (10) is in the 'O' (OFF) position.
2. Connect the DC power cable to the DC-12A Power Input Socket (9) on the rear panel of the mixer.
3. Plug the power adapter into a standard AC 100-240V, 50Hz/60Hz electrical outlet.

5.2 Connecting Audio Inputs

Figure 5.2: Connection Diagram for various devices

• Microfoni: Connect microphones to the Microphone Input Interfaces (1) using XLR or 6.5mm TRS cables. For condenser microphones requiring phantom power, ensure the +48V Phantom Power Switch (21) is OFF before connecting, then turn it ON after connection.
• Instruments (e.g., Guitar): Connect instruments to the 6.5mm Mono Input sections of the Microphone Input Interfaces (1).
• External Audio Sources (CD Player, DVD, etc.): Connect devices like CD players or DVD machines to the Recording Mode Input (14) using RCA cables.
• Chiavetta USB: Insert a USB flash drive into the USB Flash Memory Interface (17).
• Computer: Connect your computer to the mixer via the USB OTG interface (17) using a USB to USB cable. This allows two-way audio transfer.
• Mobile Phone (OTG/Bluetooth): For OTG live broadcasting, connect your mobile phone to the USB OTG interface (17) using an appropriate OTG cable. For Bluetooth, pair your phone wirelessly (see Operating Instructions).

5.3 Collegamento delle uscite audio

• Relatori principali/Amplificatore: Connect the Main Output (16) to your power amplifier or active speakers using XLR or TRS cables.
• Cuffie: Plug your headphones into the Headphone Monitor Connector (15). Use an adapter if necessary for mini plugs.
• Effetti esterni/monitor: Connect external effects processors or stage monitors to the AUX/FX Output Interfaces (11/12) using TRS cables.
• Dispositivo di registrazione: Connect a recording device to the Recording Mode Output (14) using RCA cables.

6. Istruzioni per l'uso

6.1 Accensione/Spegnimento

1. Ensure all channel faders (8) and the Main Fader (29) are at their lowest positions.
2. Turn on any connected input devices (microphones, instruments, etc.).
3. Set the mixer's Ignition Switch (10) to the 'I' (ON) position. The Power Feed Light (20) will illuminate.
4. Finally, turn on your power ampdiffusori acustici o attivi.
5. To power off, reverse the sequence: turn off power amplifier/active speakers first, then the mixer, then input devices.

6.2 Adjusting Channel Levels and EQ

1. For each active input channel, slowly raise the corresponding channel fader (8) to a desired level.
2. Adjust the Gain Controller (2) for each channel to achieve an optimal input level without clipping (monitor the PK light (7.2)).
3. Use the EQ Balance knobs (3) (HI, MID, LOW) to fine-tune the tone of each channel. Start with knobs at 12 o'clock (flat) and adjust as needed.
4. Adjust the PAN Sound Image Positioning knob (6) to position the sound source in the stereo field.
5. Use the MUTE Key (7.1) to temporarily silence a channel.

6.3 Utilizzo degli effetti DSP

Figure 6.1: DSP 256 Effects Display

1. Use the FX Auxiliary Effect knob (5) on each channel to send a portion of that channel's signal to the internal DSP effects processor.
2. On the DSP256 display section, rotate the 'ENTER' knob to select from the 256 available reverb effects. Press 'ENTER' to confirm your selection.
3. Adjust the Effect Volume Fader (28) to control the overall wet/dry mix of the effects in the main output.

6.4 Riproduzione e registrazione USB/Bluetooth

Figura 6.2: Funzione Bluetooth

1. Riproduzione USB: Inserisci un'unità flash USB con audio files into the USB Flash Memory Interface (17). Use the controls on the BT/MP3 Playback section (18) to navigate and play tracks.
2. Riproduzione Bluetooth: Press the 'MODE' button on the BT/MP3 Playback section (18) until 'BL' (Bluetooth mode) is displayed. On your mobile device, search for and connect to the mixer's Bluetooth signal. Once connected, you can play audio from your device wirelessly.
3. Registrazione USB: In USB mode, press the 'MODE' button to select 'REC'. Press the play button to start recording. Press again to pause. The recording will automatically save to the USB flash drive.
4. Connessione al computer: Connect the mixer to a computer via the USB OTG interface (17). The mixer can act as a USB sound card for both playing computer audio through the mixer and recording the mixer's output to the computer.

6.5 Monitoraggio

Figura 6.3: Monitoraggio delle cuffie in tempo reale

1. Plug headphones into the Headphone Monitor Connector (15).
2. Adjust the Headphones Adjustment Knob/Monitoring (26) to control the headphone volume.
3. The LED Light Level Indicators (19) provide visual feedback on the main output levels.

7. Specifiche

8. Risoluzione Dei Problemi

If you encounter issues with your Depusheng MG8 mixer, refer to the following common problems and solutions:

• Nessun potere:
  • Check if the power cable is securely connected to the mixer and the electrical outlet.
  • Ensure the Ignition Switch (10) is in the 'I' (ON) position and the Power Feed Light (20) is illuminated.
  • Verificare che la presa elettrica funzioni.
• Nessuna uscita audio:
  • Controllare tutti i collegamenti dei cavi di ingresso e di uscita.
  • Ensure channel faders (8) and the Main Fader (29) are raised to an audible level.
  • Verify that the MUTE Key (7.1) is not engaged for active channels.
  • Check the volume levels on connected ampdiffusori acustici o altoparlanti attivi.
  • If using USB or Bluetooth, note that the output is mono audio and there is no auxiliary output.
• Distorsione o ritaglio:
  • Reduce the Gain Controller (2) for the affected channel.
  • Lower the channel fader (8) or Main Fader (29).
  • If the PK Light (7.2) is illuminated, the input signal is too high; reduce the source volume or the Gain Controller.
• Ronzio o rumore:
  • Assicurarsi che tutti i cavi siano adeguatamente schermati e collegati.
  • Move the mixer away from other electronic devices (TVs, radios, mobile phones) that might cause interference.
  • Close all unused channels by engaging their MUTE keys (7.1).
• USB/Bluetooth Output is Mono:
  • This is a design characteristic. When USB and Bluetooth are connected, the output is mono audio, and there is no auxiliary output.
• Computer Recording is Single-Track:
  • This is a design characteristic. The mixer is a single-track recording device; only one channel can be recognized on the computer, and all sounds output by the mixer are mixed into one track on the computer.

9. Suggerimenti per l'utente

• Connettività del computer: The USB interface is a two-way connection. You can input microphone sound from the mixer to your computer for recording, and also transmit audio from your computer back to the mixer for playback. Control the volume using the Tape/MP3 Fader (27) and the Main Fader (29).
• Connessione giradischi: For connecting Technics turntables with RCA cables, use the RCA recording input (14). Ensure proper gain staging to match the turntable's output level.
• Utilizzo dell'alimentazione fantasma: Always ensure the +48V Phantom Power Switch (21) is OFF before connecting or disconnecting condenser microphones to prevent damage to the microphone or mixer.
• Gestione dei canali: Utilize the MUTE function (7.1) on unused channels to reduce overall noise and simplify your mix.

10. Manutenzione

Proper maintenance ensures the longevity and optimal performance of your Depusheng MG8 mixer.

• Pulizia: Always unplug all product connection cables before cleaning. Use a soft, dry cloth to wipe the surface of the mixer. Do not use abrasive cleaners, solvents, cleaning liquids, or chemical towels, as these can damage the finish or internal components.
• Condensazione: If the device is exposed to rapid temperature changes (e.g., moving from a cold to a warm environment), condensation may form. Do not operate the mixer until the condensation has completely evaporated, which may take several hours.
• Lubrificazione: Do not apply oil, grease, or contact cleaner to the faders or knobs. These components are designed for smooth operation without additional lubrication.
• Magazzinaggio: Quando non viene utilizzato per lunghi periodi, conservare il mixer in un ambiente asciutto e privo di polvere, lontano dalla luce solare diretta e da temperature estreme.

11. Garanzia e supporto

Depusheng audio products come with a 12-month manufacturer's warranty and backed customer service.

For further detailed information, diagrams, or specific instructions, please refer to the official user manual PDF:

View Manuale utente (PDF)

If you require technical assistance or have questions not covered in this manual, please contact Depusheng customer service.