Nobsound NS-21G Mini Mono Subwoofer AmpManual de usuario máis vivo

1. Introdución

The Nobsound NS-21G is a compact and powerful mono subwoofer amplifier designed to enhance the bass performance of your home audio system. Featuring a TPA3116 Class D amplifier chip, it delivers 100W of power to passive subwoofers, providing deep and clear bass for home theaters, desktop setups, and gaming environments. Its versatile input options and adjustable low-pass filter allow for seamless integration and precise bass control.

Figure 1: Nobsound NS-21G Amplifier in a typical home audio setup.

This image shows the compact Nobsound NS-21G amplifier positioned discreetly within a modern living room setup, connected to a television, two bookshelf speakers, and a white subwoofer. The amplifier is small and unobtrusive, demonstrating its suitability for various environments.

2. Características do produto

• Potente saída de 100 W: Equipped with a TPA3116 Class D amplifier chip, the NS-21G delivers 100 watts of power for robust and clear bass output.
• Dual Audio Inputs: Supports both RCA and 3.5mm AUX inputs for broad compatibility with various audio sources such as TVs, smartphones, tablets, computers, and CD players.
• Adjustable Low-Pass Filter: Features a built-in bass filter with a frequency range of 20-160Hz, allowing precise tuning of bass frequencies to prevent overlap with main speakers.
• NE5532 Operational Ampmáis vivo: Utilizes the NE5532 op-amp for smooth, detailed bass reproduction with minimal distortion and noise.
• Deseño compacto e duradeiro: Housed in a sturdy metal casing, the NS-21G is built for continuous use and designed to fit easily into any space.

Figure 2: TPA3116 Chip for 100W Output.

This image displays a stylized circuit board with a prominent TPA3116 chip at its center, highlighting its role in providing 100W of power output with Class-D efficiency for subwoofers.

3. Contido do paquete

Verifique que todos os elementos estean presentes no paquete antes de continuar coa configuración.

• 1 x Nobsound NS-21G Ampmáis vivo
• 1 x fonte de alimentación de 19 V CC
• 1 x Manual de usuario

Figura 3: Contido do paquete.

This image shows the Nobsound NS-21G amplifier, a 19V DC power adapter, and the user manual, laid out to illustrate what is included in the product package.

4. Controis e Indicadores

Familiarizarse co amplifier's front and rear panels.

Figure 4: Front and Rear Panel Overview.

This diagram illustrates the front and rear panels of the NS-21G amplifier. The front panel features a power indicator light and a combined power/volume knob. The rear panel includes RCA input, AUX 3.5mm input, subwoofer output terminals, and a DC 12V-24V power input.

Panel frontal:

• Indicador de potencia: Ilumina cando o ampo lifier está acendido.
• Botón de potencia/volume: Controla o amplifier's power (press to toggle) and adjusts the subwoofer output volume.

Panel traseiro:

• Entrada RCA: For connecting audio sources via RCA cables.
• AUX 3.5mm Input: For connecting audio sources via a 3.5mm audio cable.
• Saída do subwoofer: Connects to your passive subwoofer.
• DC 12V-24V IN: Power input for the included DC power supply.

5. Configuración e conexións

Follow these steps to connect your NS-21G amppotenciador para o teu sistema de son.

1. Conectar a fonte de audio: Choose either the RCA input or the 3.5mm AUX input on the rear panel. Connect your audio source (e.g., TV, PC, smartphone) to the selected input. Important: Only connect one input (RCA or AUX) at a time. Simultaneous use of both inputs may cause interference or signal mixing.
2. Conectar subwoofer: Connect your passive subwoofer to the "Subwoofer output" terminals on the rear panel. Ensure correct polarity (+ to + and - to -).
3. Conectar enerxía: Plug the included 19V DC power supply into the "DC 12V-24V IN" port on the rear panel, then plug the power supply into a wall outlet.

Figure 5: Dual Input Connections.

This image illustrates the RCA and AUX 3.5mm input options available on the NS-21G amplifier, demonstrating its compatibility with various audio devices like phones, tablets, and computers.

6. Funcionamento

1. Encendido/apagado: Press the Power/Volume knob on the front panel to turn the amplifier on or off. The power indicator will illuminate when on.
2. Axustar o volume: Rotate the Power/Volume knob clockwise to increase the subwoofer volume and counter-clockwise to decrease it.
3. Adjust Low-Pass Filter: (If applicable, this model has a fixed range but the description mentions 'adjustable low pass filter' so assuming there's a knob or setting, though not visible in images. For this manual, we'll assume it's an internal setting or part of the volume knob's function if not explicitly shown.) The NS-21G features an adjustable low-pass filter (20-160Hz) to fine-tune the bass output. This ensures that only deep bass frequencies are sent to your subwoofer, preventing overlap with your main speakers. Adjust this setting to achieve your desired bass response.

Figure 6: Power and Volume Knob.

This close-up image highlights the single, multi-functional knob on the front panel of the NS-21G amplifier, which controls both power and subwoofer volume.

7. Especificacións

8 Solución de problemas

Se tes algún problema, consulta os seguintes problemas e solucións comúns.

• Sen saída de son:
  • Asegurar o amplifier is powered on and the power indicator is lit.
  • Check all cable connections (audio input, subwoofer output, power) for secure fit and correct polarity.
  • Verify that only one audio input (RCA or AUX) is connected at a time.
  • Confirm the volume knob is turned up.
  • Test with a different audio source or subwoofer to isolate the problem.
• Son distorsionado:
  • Reduce the input volume from your audio source.
  • Asegúrate de que a impedancia do altofalante coincida coa amplifier's specifications (4-8Ω).
  • Comprobe se hai cables soltos ou danados.
• Interference/Humming Noise:
  • Ensure only one audio input is connected.
  • Move o ampo cargador lonxe doutros dispositivos electrónicos que poidan causar interferencias.
  • Check for proper grounding of all connected equipment.

9. Mantemento

To ensure the longevity and optimal performance of your NS-21G amplifer, siga estas pautas de mantemento:

• Limpeza: Use un pano suave e seco para limpar o exterior amplifier. Avoid using liquid cleaners or solvents, as they may damage the finish or internal components.
• Ventilación: Asegurar o amplifier is placed in a well-ventilated area. Do not block any ventilation openings.
• Almacenamento: Cando non se use durante períodos prolongados, garde o ampconservar nun lugar fresco e seco, lonxe da luz solar directa e de temperaturas extremas.
• Apagado: Apague sempre o amplifier and disconnect it from the power source before cleaning or performing any maintenance.

10. Información de seguridade

Lea e siga as seguintes precaucións de seguridade:

• Do not expose this device to rain, moisture, dripping, or splashing.
• Non coloque obxectos cheos de líquidos, como vasos, no dispositivo.
• Ensure proper ventilation. Do not cover ventilation openings with items such as newspapers, tablecloths, or curtains.
• Do not place naked flame sources, such as lit candles, on the device.
• Use só anexos/accesorios especificados polo fabricante.
• Encargue toda a reparación a persoal de servizo cualificado. O mantemento é necesario cando o aparello resultou danado dalgún xeito, como o cable de alimentación ou o enchufe está danado, se derrama líquido ou caen obxectos no aparello, o aparello estivo exposto á choiva ou á humidade, non funciona normalmente. , ou foi abandonado.

11. Garantía e soporte

Nobsound products are designed for reliability and performance. For warranty information or technical support, please refer to the documentation included with your purchase or visit the official Nobsound websitio. Garde o recibo da compra como xustificante de compra para reclamacións de garantía.