1. Introdução
This manual provides detailed instructions for the operation and maintenance of your IINCOOY Digital 31-Band Graphic Equalizer. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize its performance.
The IINCOOY Digital Graphic Equalizer is designed to offer precise audio control and enhancement for various sound systems. It features advanced DSP digital processor technology, a clear LCD display, and intelligent noise reduction capabilities.
2. Principais características
- Redução de ruído profissional: Utilizes advanced DSP technology for high-definition audio and noise reduction across 31 frequency bands.
- Feedback visual: Features LED spectrum lights for visual representation of audio frequencies.
- Adjustable Bass: Allows customization of bass levels to personal preference.
- 10 Preset Effects: Equipped with a DSP chip offering 10 pre-configured audio enhancement effects.
- Redução Inteligente de Ruído: Reduces background noise for improved audio clarity.
- Controle por computador: USB interface for easy control and adjustment via a connected computer, with multi-language software support.
- High-Definition LCD Display: Large, clear LCD for real-time monitoring of frequency, volume, and mode settings.
3. Produto acabadoview: Controls and Display
Familiarize yourself with the front panel controls and display features of your equalizer.

Figura 3.1: Frente view of the IINCOOY Digital 31-Band Graphic Equalizer, showcasing the LCD display, LED spectrum lights, and control knobs.

Figura 3.2: Detalhado view of the sensitive adjustment knobs/buttons, dynamic LED spectrum indicator lights, and the HD LCD display. The LCD shows numerical values, while the LED lights provide visual feedback on frequency levels.
3.1. LED Spectrum Light Indicators
The LED spectrum lights provide visual feedback on the audio frequency levels. Understanding the color indicators is crucial for monitoring audio status.

Figura 3.3: Explanation of LED light colors. Blue indicates static/normal meter, flashing blue indicates frequency band parameter adjustment, green is normal status, yellow is warning, and red is critical state.
- Luz Azul: Indicates a static state, meaning the meter is operating normally.
- Luz Azul Piscando: Represents an increase or attenuation adjustment of the frequency band parameter.
- Luz verde: Indicates normal operational status.
- Luz amarela: Indicates a warning status.
- Luz vermelha: Indicates a critical state, requiring immediate attention.
4. Conexões
The rear panel of the equalizer features various input and output interfaces for connecting to your audio system.

Figura 4.1: Rear panel layout with numbered connection points.
- PODER: Main power switch (on/off).
- POWER Interface: Connects to 110V/220V AC power supply.
- INPUT (Lotus): Left and right channel RCA (Lotus) input interface.
- OUTPUT (Lotus): Left and right channel RCA (Lotus) output interface.
- ENTRADA 1/ENTRADA 2: Left and right channel 6.5mm / XLR two-in-one common input interface.
- OUTPUT 1/OUTPUT 2 (XLR): Left and right channel XLR output interfaces.
- OUTPUT (6.5mm): Left and right channel 6.5mm output interface.
5. Configuração e instalação
Follow these steps to properly connect your IINCOOY Digital Graphic Equalizer to your audio system.

Figura 5.1: Example connection diagram showing the equalizer integrated into an audio setup including a DVD player, processor, mixer, amplificador e alto-falantes.
- Conexão de energia: Connect the power cable to the POWER interface (2) on the rear panel and then to a suitable 110V/220V AC power outlet.
- Conexão de entrada:
- Connect your audio source (e.g., mixer, DVD player, processor) to the equalizer's input interfaces (3 or 5). Use either RCA (Lotus) cables for INPUT (3) or 6.5mm/XLR cables for INPUT 1/INPUT 2 (5).
- Conexão de saída:
- Connect the equalizer's output interfaces (4, 6, or 7) to your amplifier or next audio processing unit. Use RCA (Lotus) cables for OUTPUT (4), XLR cables for OUTPUT 1/OUTPUT 2 (6), or 6.5mm cables for OUTPUT (7).
- Integração do sistema: Ensure all other audio components (e.g., amplifier, speakers) are correctly connected and powered.
- Inicialização: After all connections are secure, switch on the equalizer using the POWER switch (1).
Observação: Always ensure all devices are powered off before making any connections to prevent damage to equipment.
6. Operação
6.1. Basic Audio Adjustment
Once powered on, the LCD display will show current settings. Use the front panel controls to adjust audio parameters.
- Ajuste da faixa de frequência: Use the individual sliders or rotary controls (if applicable) for each of the 31 frequency bands to boost or cut specific frequencies. Observe the LED spectrum lights for visual feedback.
- Controle de Ganho: Adjust the main gain knob to control the overall output level.
- Controle de volume: Use o botão de volume para ajustar o nível de audição desejado.
6.2. Treble, Midrange, and Bass Adjustments
The equalizer allows for independent adjustment of treble, midrange, and bass frequencies.
- Agudos: Adjusts frequencies in the 20-250Hz range.
- Intervalo médio: Adjusts frequencies in the 300-2500Hz range.
- Baixo: Adjusts frequencies in the 3.15-20KHz range.
6.3. Preset Effects
The equalizer includes 10 preset effects. Refer to the device's specific controls or the computer software for selecting and applying these effects.
6.4. Intelligent Noise Reduction
The intelligent noise reduction feature automatically minimizes background noise. This function is typically active by default or can be toggled via the control panel or computer software.
7. Controle do computador
The equalizer can be controlled via a computer for more precise adjustments and access to advanced features.
- Conecte USB: Use a USB data cable to connect the equalizer's front panel USB interface to your computer.
- Instalar software: Install the provided debugging software on your computer. The software supports both Chinese and English languages.
- Control and Adjust: Use the software interface to control all equalizer functions, including frequency adjustments, preset selection, and noise reduction settings. The software provides a visual representation of the signal flow for intuitive operation.
8. Especificações
Technical specifications for the IINCOOY Digital 31-Band Graphic Equalizer.

Figura 8.1: Product dimensions and key technical specifications.
| Parâmetro | Valor |
|---|---|
| Volumetage | 110 V/220 V |
| Consumo de energia | 30 W |
| Sound Transmission Gain | 1dB ou 11dB |
| Resposta de frequência | 20Hz-20KHz |
| Product Dimensions (Single) | 480 mm x 175 mm x 45 mm |
| Product Dimensions (Double) | 480 mm x 180 mm x 100 mm |
| Peso do item | 8.82 libras (aproximadamente 4 kg) |
| Impedância de entrada de linha | 15KΩ |
| Impedância de saída de linha | 300 Ω |
| Sinal-Ruído | 82 dB |
9. Solução De Problemas
Esta seção fornece soluções para problemas comuns que você pode encontrar.
- Sem energia:
- Ensure the power cable is securely connected to both the equalizer and a working power outlet.
- Check the power switch (1) on the rear panel is in the 'ON' position.
- Verifique se a tomada elétrica está funcionando.
- Sem saída de som:
- Check all audio input and output cables are correctly and securely connected.
- Ensure the input source is active and producing sound.
- Verify the equalizer's volume and gain settings are not set to minimum.
- Check connections to the ampamplificador e alto-falantes.
- Som distorcido:
- Reduce the input gain to prevent clipping.
- Adjust individual frequency bands to identify and correct over-amplified frequencies.
- Certifique-se de que todos os cabos estejam em boas condições e devidamente conectados.
- Ruído/Zumbido:
- Ensure proper grounding for all audio equipment.
- Verifique se há conexões de cabo soltas.
- Utilize the intelligent noise reduction feature.
- Separate audio cables from power cables to reduce interference.
- Visor LCD não funciona:
- Certifique-se de que a unidade está ligada.
- Se o problema persistir, entre em contato com o suporte ao cliente.
10. Manutenção
Proper maintenance ensures the longevity and optimal performance of your equalizer.
- Limpeza: Use um pano macio e seco para limpar a parte externa da unidade. Não use produtos de limpeza líquidos ou materiais abrasivos.
- Ventilação: Ensure the unit has adequate ventilation and is not placed in an enclosed space that could lead to overheating.
- Armazenar: Quando não estiver em uso por longos períodos, guarde o equalizador em local fresco e seco, longe da luz solar direta e de temperaturas extremas.
- Desligar: Always power off and unplug the unit before cleaning or moving it.
11. Garantia e Suporte
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact IINCOOY customer service.
Please have your model number (IINCOOY) and purchase date available when contacting support.