CUQI ZK-HT21 Bluetooth AmpManual de instrucciones de la placa elevadora

1. Introducción

This manual provides detailed instructions for the installation, operation, and maintenance of the CUQI ZK-HT21 Bluetooth Amplifier Board. This 2.1 channel amplifier module is designed for DIY speaker projects, offering high-fidelity audio output with versatile input options and robust protection features.

2. Características del producto

• Three Audio Input Methods: Supports AUX (3.5mm), USB (U-Disk), and Bluetooth 5.0 connections for broad compatibility with various audio devices. The Bluetooth connection range is approximately 15 meters (49 feet). Note: When using AUX mode, ensure the module's Bluetooth connection is disconnected.
• Triple-Channel Audio Experience: Features a built-in DA7498E chip, delivering 160W for left and right channels and 220W for the subwoofer, providing clear and powerful sound.
• Disipación de calor efectiva: Incorporates a semi-open structure with a silent fan to efficiently reduce operating temperature and extend the amplifier board's lifespan.
• Multi-protection: Built-in safeguards against reverse polarity, short circuits, overheating, and overcurrent ensure safe operation.
• Amplia compatibilidad: Supports DC 15–36V power supplies (under-voltage protection triggers below 9V, also supports 12V). Compatible with 30–200W, 4–8Ω speakers.

3. Contenido del paquete

Verifique que todos los artículos enumerados a continuación estén incluidos en su paquete:

Figura 3.1: Contenido del paquete. This image displays the ZK-HT21 amplifier board, top and bottom cover plates, various screws and copper columns for assembly, five button caps, a power terminal, and a screwdriver.

• ZK-HT21 Bluetooth Amplifier Board x1
• Top Cover Plate x1
• Lower Cover Plate x1
• M2x18 Copper Column x4
• M2x5+4 Copper Column x4
• Tornillos M2x4mm x8
• Button Cap x5
• Power Terminal x1
• Destornillador x1

4. Producto terminadoview

Familiarize yourself with the components and controls of the ZK-HT21 amptablero más duradero.

Figure 4.1: Component Layout. This diagram identifies the power input, speaker terminals, audio inputs (Bluetooth, AUX, USB), control knobs (Subwoofer Frequency, Bass Volume, Left/Right Channel Treble, Left/Right Channel Bass, Master Volume/Switch), and internal components like the fan and capacitors.

• Entrada de energía: 5.5x2.1DC Header and 2P Terminal for DC 15-36V power supply.
• Salidas de altavoz: Terminals for Left, Right, and Subwoofer channels.
• Entradas de audio: Bluetooth, AUX (3.5mm), USB (U-Disk).
• Subwoofer Freq (Frequency): Adjusts the cutoff frequency for the subwoofer.
• Volumen del altavoz de subgraves: Controls the output level of the subwoofer.
• Agudos del canal izquierdo y derecho: Adjusts high frequencies for stereo channels.
• Graves del canal izquierdo y derecho: Adjusts low frequencies for stereo channels.
• Volumen maestro/Interruptor: Controls overall volume. Press the dial button for short press (pause/play) or long press (switch mode: USB/Bluetooth/AUX).
• Interfaz de entrada USB: For connecting a U-Disk to play audio files.
• Base de la antena: For Bluetooth antenna (can be directly welded or use the antenna base).

5. Configuración e instalación

Siga estos pasos para ensamblar y conectar su amptablero más duradero.

Figura 5.1: Diagrama de ensamblaje. This image illustrates the assembly process, showing the PCB board, copper columns, top and bottom cover plates, screws, and button caps.

1. Assemble the Casing:
   • Attach the M2x5+4 copper columns to the PCB board using the M2x4mm screws.
   • Place the lower cover plate onto these copper columns.
   • Attach the M2x18 copper columns to the PCB board.
   • Place the top cover plate onto the M2x18 copper columns and secure with the remaining M2x4mm screws.
   • Install the five button caps onto the control shafts.
2. Conectar altavoces: Connect your 30-200W, 4-8Ω speakers to the designated Left, Right, and Subwoofer output terminals on the ampPlaca del amplificador. Asegúrese de que la polaridad sea correcta (+/-).
3. Conecte la electricidad: Connect a DC 15-36V power supply to the 5.5x2.1DC header or the 2P terminal. Ensure correct polarity.
4. Conectar fuente de audio: Elija uno de los siguientes métodos de entrada:
   • Bluetooth: Power on the board. The Bluetooth indicator will flash. Buscar "ZK-HT21" on your device and pair.
   • Auxiliar: Connect your audio device (phone, PC, MP3, TV) to the 3.5mm AUX input. Ensure Bluetooth is disconnected.
   • USB: Insert a U-Disk with audio files into the USB input interface.

6. Instrucciones de funcionamiento

Una vez conectado, opere el amplificador utilizando los siguientes controles:

Figure 6.1: Audio Input Methods. This image visually represents connecting audio sources via Bluetooth, AUX, or USB to the amplifier board for playback through speakers.

• Encendido/apagado: El amplifier powers on automatically when connected to a suitable power supply.
• Master Volume/Switch Knob:
  • Rotate to adjust the overall output volume.
  • Prensa breve: In Bluetooth mode, this acts as Play/Pause. In AUX mode, it mutes/unmutes the audio.
  • Pulsación larga: Switches between input modes (USB, Bluetooth, AUX).
• Subwoofer Freq Knob: Adjusts the low-pass filter frequency for the subwoofer output. Turn clockwise for higher cutoff, counter-clockwise for lower.
• Perilla de volumen del subwoofer: Ajusta el nivel de volumen del subwoofer de forma independiente.
• Left and Right Channel Treble Knob: Ajusta la respuesta de alta frecuencia para los canales estéreo principales.
• Left and Right Channel Bass Knob: Ajusta la respuesta de baja frecuencia para los canales estéreo principales.

7. Mantenimiento

To ensure optimal performance and longevity of your ZK-HT21 ampplaca elevadora:

• Mantenga la pizarra limpia y sin polvo. Utilice un paño suave y seco para limpiarla.
• Asegúrese de que haya una ventilación adecuada alrededor del amplifier, especially around the fan, to facilitate proper heat dissipation.
• Avoid exposing the board to moisture, extreme temperatures, or direct sunlight.
• Do not attempt to modify the circuit board, as this may void any potential warranty and could cause damage.

8. Solución de problemas

Si encuentra problemas, consulte los siguientes problemas y soluciones comunes:

Figure 8.1: Protection Features. This image highlights the various built-in protections of the amplifier board, including undervoltage, overheat, overcurrent, short-circuit, and reverse connection protection.

9. Especificaciones

Figura 9.1: Dimensiones del producto. This image provides a visual representation of the amplifier board's physical dimensions.

10. Información de seguridad

Lea y siga estas pautas de seguridad para evitar lesiones o daños al producto:

• Use only the specified DC 15-36V power supply. Using an incorrect voltage or AC power can damage the board.
• Ensure correct polarity when connecting the power supply and speakers.
• No opere el ampLifier en mojado o damp condiciones.
• Avoid touching the circuit board components while the unit is powered on.
• Mantener fuera del alcance de los niños.
• El amplifier board includes built-in protections against reverse polarity, short circuits, overheating, and overcurrent. However, always exercise caution during installation and operation.

11. Garantía y soporte

For warranty information or technical support, please contact the seller or manufacturer directly. Retain your purchase receipt for any warranty claims.