1. Introdución
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of the EC Buying ZK-502MT 50W x 2 Bluetooth-Compatible Amplifier Board. Please read this manual thoroughly before using the product to ensure proper function and safety.
2. Información de seguridade
- Fonte de alimentación: Use a DC9-24V/3A or above power supply. Do not connect to a 24V battery pack directly. Ensure the power supply voltage é estable e está dentro do rango especificado.
- Compatibilidade de altofalantes: Connect speakers with an impedance of 4-8Ω and a power rating of 15-100W. Using incompatible speakers may damage the ampplaca de eliminación.
- Mecanismos de protección: The board includes built-in overheating, overcurrent, short circuit, and voltage protection. However, avoid operating the device under extreme conditions to prevent triggering these protections unnecessarily.
- Ambiente: Operar o amplifier in a dry, well-ventilated area. Avoid exposure to moisture, dust, or extreme temperatures.
- Manexo: Handle the board with care to avoid damaging electronic components. Avoid touching the circuit board while powered on.
3. Contido do paquete
Verifique que todos os elementos que se indican a continuación estean incluídos no seu paquete:
- ZK-502MT Bluetooth-Compatible AmpConsello máis vivo
- Knobs (Volume, Treble, Bass)
- Mounting hardware (screws, standoffs)
- DC power adapter connector
- Desaparafusador pequeno
- Disipador de calor
Image 3.1: ZK-502MT amplifier board, three control knobs, mounting hardware, DC power connector, screwdriver, and heat sink.
4. Produto rematadoview
The ZK-502MT is a compact 50W x 2 Bluetooth-Compatible audio amplifier module designed for home passive speakers. It features Bluetooth 5.0 connectivity and an AUX input, along with independent treble and bass controls for sound customization.
Imaxe 4.1: Arriba view of the ZK-502MT amplifier board showing the main components, input/output terminals, and control knob shafts.
Imaxe 4.2: Parte inferior view of the ZK-502MT amplifier board, displaying the model number and circuit board traces.
5. Especificacións
| Parámetro | Valor |
|---|---|
| Modelo de produto | ZK-502MT |
| Versión Bluetooth | 5.0 (unobstructed range up to 15 meters / 49 feet) |
| Relación sinal a ruído (SNR) | > 90 dB |
| Método de entrada | AUX + Bluetooth-Compatible |
| Número de canles | Left and right dual channels (Stereo) |
| Adaptive Power Supply | DC9~24V / 3A or above (cannot be connected to 24V battery pack) |
| Compatible Speaker Impedance | 4~8Ω |
| Compatible Speaker Power | 15 ~ 100 W. |
| Output Power (at 8Ω) | 12V: 12W+12W, 15V: 18W+18W, 19V: 30W+30W, 24V: 40W+40W |
| Output Power (at 4Ω) | 12V: 20W+20W, 15V: 30W+30W, 19V: 40W+40W, 24V: 50W+50W |
| Mecanismos de protección | Overheating, Overcurrent, Short Circuit, Voltage Protección |
| Dimensións do produto (L*W*H) | 89mm * 60mm * 21mm (overall, including connectors/knobs) |
| Board Dimensions (L*W) | 74mm * 60mm (board only) |
| Peso do produto | Approximately 111g (including packaging) |
Image 5.1: ZK-502MT amplifier board with board dimensions of 74mm x 60mm indicated.
6. Instrucións de configuración
- Install Heat Sink: Attach the provided heat sink to the amplifier chip on the board. Ensure good contact for efficient heat dissipation.
- Conectar altofalantes: Connect your passive speakers to the speaker output terminals (L+, L-, R+, R-) on the amplifier board. Ensure correct polarity. Use the small screwdriver for secure connections.
- Conectar fonte de alimentación: Connect a DC9-24V power supply (3A or higher) to the DC power input jack. If using the included DC power adapter connector, wire it to your power supply.
- Instalar botóns: Place the three control knobs onto their respective shafts (Volume, Treble, Bass).
- Encendido: Once all connections are secure, turn on the power supply. The amplifier board will power on.
7. Instrucións de funcionamento
7.1. Conexión Bluetooth
- Asegurar o amplifier board is powered on.
- On your audio source device (e.g., smartphone, tablet), enable Bluetooth and search for available devices.
- Select "ZK-502MT" from the list of devices to pair. A confirmation sound may indicate successful pairing.
- Once paired, audio from your device will play through the connected speakers.
7.2. AUX Input Connection
- Connect your audio source device to the AUX-IN port on the amplifier board using a 3.5mm audio cable.
- O amplifier will automatically switch to AUX input when a cable is detected.
7.3. Axuste do audio
- Control de volume: Rotate the Volume knob to adjust the overall output level.
- Control de agudos: Rotate the Treble knob to increase or decrease high-frequency sounds.
- Control de graves: Rotate the Bass knob to increase or decrease low-frequency sounds.
8. Mantemento
- Limpeza: Use un pano suave e seco para limpar amptarxeta lifter. Non empregue produtos de limpeza líquidos nin disolventes.
- Almacenamento: Cando non se use durante períodos prolongados, garde o amplifier in a cool, dry place away from direct sunlight and moisture.
- Inspección: Periodically check all connections for tightness and ensure no wires are frayed or damaged.
9 Solución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| Sen saída de son |
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| Bluetooth non se sincroniza |
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| Son distorsionado |
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| Ampsobrequecemento do lifier |
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10. Información da garantía
Warranty information for the EC Buying ZK-502MT amplifier board is not available in the provided product data. Please refer to your purchase documentation or contact the seller for details regarding warranty coverage.
11. Atención ao cliente
Customer support contact information for the EC Buying ZK-502MT amplifier board is not available in the provided product data. For assistance, please contact the retailer or seller from whom you purchased the product.