Nobsound NS-04G PRO 2.0 Channel HiFi Stereo Digital Power AmpManuale utente lifier

1. Introduzione

The Nobsound NS-04G PRO is a compact 2.0 channel HiFi stereo digital power amplifier designed for home audio systems. It features dual TPA3116 IC chips, providing a maximum output of 100W + 100W (at 4Ω load). This amplifier is compatible with various audio sources via standard stereo RCA input and is suitable for driving passive bookshelf, computer, desktop, or floor-standing speakers. Its design focuses on clear sound reproduction with low distortion and dynamic balance.

Image: The Nobsound NS-04G PRO amplifier, highlighting the internal TPA3116D2 chips responsible for its audio processing capabilities.

2. Cosa c'è nella scatola

Si prega di controllare il contenuto della confezione una volta disimballata per assicurarsi che siano presenti tutti gli articoli:

• 1 x Nobsound NS-04G PRO Amppiù vivace
• 1 alimentatore da 19 V
• 1 x Manuale utente

Image: Contents of the Nobsound NS-04G PRO package, including the amplifier unit, its power supply, and the user manual.

3. Prodotto finitoview

The Nobsound NS-04G PRO amplifier features a straightforward design for ease of use. Below is an overview of its front and rear panels:

Image: Detailed diagram showing the front and rear panels of the Nobsound NS-04G PRO amplifier, indicating input, output, power, and control elements.

Pannello frontale

• Indicatore di alimentazione: A small LED light that illuminates when the amplifier è acceso.
• Manopola del volume / Interruttore di accensione: This multi-function knob controls the audio output level and also serves as the power on/off switch. Turn clockwise to increase volume and power on, counter-clockwise to decrease volume and power off.

Pannello posteriore

• Ingresso RCA (S/D): Standard stereo RCA jacks for connecting audio sources such as phones, TVs, MP3 players, CD players, DACs, or computers.
• Uscita altoparlante (S/D): Binding posts for connecting passive speakers. Ensure correct polarity (+ to + and - to -) for optimal sound.
• Ingresso alimentazione CC 12V-24V: Jack for connecting the provided 19V power adapter.

4. Impostazione

Follow these steps to set up your Nobsound NS-04G PRO amplificatore:

1. Collegare gli altoparlanti: Connect your passive speakers to the speaker output binding posts on the rear panel. Ensure the positive (+) terminal of the amplifier connects to the positive (+) terminal of the speaker, and the negative (-) terminal connects to the negative (-) terminal.
2. Collega la sorgente audio: Connect your audio source (e.g., phone, TV, CD player) to the RCA input jacks on the rear panel using an RCA cable. Match the left (L) and right (R) channels.
3. Connetti alimentazione: Connect the provided 19V power adapter to the DC 12V-24V power input jack on the rear panel, then plug the adapter into a wall outlet.
4. Accensione: Turn the volume knob clockwise to power on the amplifier. The power indicator light on the front panel will illuminate.

Image: The Nobsound NS-04G PRO amplifier set up with two passive speakers and an audio source, demonstrating a typical connection.

5. Istruzioni per l'uso

Una volta il amplifier is set up, operating it is straightforward:

• Accensione/spegnimento: Rotate the volume knob clockwise to turn on the amplifier. Rotate it counter-clockwise until it clicks to turn off the amppiù vivace.
• Regola volume: After powering on, rotate the volume knob clockwise to increase the volume and counter-clockwise to decrease it. Start with a low volume and gradually increase it to a comfortable listening level.
• Riproduzione audio: Ensure your audio source is playing content. The amplifier will output the sound through the connected speakers.

Immagine: un primo piano view of the volume knob on the Nobsound NS-04G PRO, which also functions as the power switch.

6. Specifiche

7. Risoluzione Dei Problemi

If you encounter issues with your Nobsound NS-04G PRO amplifier, fare riferimento ai seguenti problemi comuni e alle relative soluzioni:

• Nessun suono o volume basso:
  • Ensure all cables (power, audio input, speaker wires) are securely connected.
  • Verificare che la sorgente audio sia in riproduzione e che il volume sia alzato.
  • Controllare il amplifier's volume knob and ensure it is turned up sufficiently.
  • Confirm speaker wires are connected with correct polarity (+ to + and - to -).
• Sound Only from One Speaker:
  • Check the RCA input cable connections for both left and right channels.
  • Inspect speaker wire connections for the affected channel.
  • Test with a different audio source or cable to rule out external equipment issues.
• Distortion or Poor Sound Quality at Higher Volumes:
  • The provided 19V power supply may limit the amplifier's full potential. For optimal performance and higher output without distortion, consider upgrading to a 24V power supply with a higher wattage (e.g., 240W), ensuring it is compatible with the amplifier's DC input specifications.
  • Ensure your speakers are rated to handle the amppotenza di uscita del generatore.
• High-Pitched Screeching Sound:
  • This can indicate interference or a faulty component. Try isolating the amplifier from other electronic devices.
  • Assicurarsi che tutti i collegamenti siano ben saldi e privi di cortocircuiti.
  • Se il problema persiste, contatta l'assistenza clienti.
• Pop Sound at Power On/Off:
  • A slight pop sound upon power cycling can be normal for some amplifiers. If it is excessively loud or concerning, ensure the volume is turned down before powering on or off.
• Volume Knob Too Sensitive:
  • The volume control may be highly reactive. Make small, precise adjustments to achieve the desired volume level.

8. Manutenzione

To ensure the longevity and optimal performance of your Nobsound NS-04G PRO amplifier, seguire queste linee guida per la manutenzione:

• Pulizia: Utilizzare un panno morbido e asciutto per pulire la parte esterna del amplificatore. Evitare l'uso di detergenti liquidi, spray o solventi, poiché potrebbero danneggiare la finitura o i componenti interni.
• Posizionamento: Posizionare il amplifier in a well-ventilated area to prevent overheating. Avoid direct sunlight, heat sources, and areas with high humidity or dust.
• Gestione: Gestire il amplificatore con cura. Evitare di farlo cadere o di sottoporlo a forti urti.
• Spegnimento quando non in uso: For extended periods of inactivity, power off the amplificatore e scollegarlo dalla presa a muro.

9. Garanzia e supporto

Nobsound products are designed for reliability and performance. For specific warranty details, please refer to the warranty card included with your product or visit the official Douk Audio website. If you encounter any issues not covered in this manual or require further assistance, please contact Nobsound customer support through the retailer where you purchased the product or via the contact information provided on the official Douk Audio webposto (www.doukaudio.com).