1. Introducció
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. Informació de seguretat
- Font d'alimentació: Use a DC9-24V/3A or above power supply. Do not connect to a 24V battery pack directly. Ensure the power supply voltage is stable and within the specified range.
- Compatibilitat d'altaveus: Connect speakers with an impedance of 4-8Ω and a power rating of 15-100W. Using incompatible speakers may damage the amptauler més viu.
- Mecanismes de protecció: 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.
- Medi ambient: Operar el amplifier in a dry, well-ventilated area. Avoid exposure to moisture, dust, or extreme temperatures.
- Manipulació: Handle the board with care to avoid damaging electronic components. Avoid touching the circuit board while powered on.
3. Contingut del paquet
Verifiqueu que tots els elements que s'enumeren a continuació s'inclouen al vostre paquet:
- ZK-502MT Bluetooth-Compatible AmpJunta més viva
- Knobs (Volume, Treble, Bass)
- Ferramenteria de muntatge (cargols, separadors)
- DC power adapter connector
- Petit tornavís
- Dissipador de calor
Image 3.1: ZK-502MT amplifier board, three control knobs, mounting hardware, DC power connector, screwdriver, and heat sink.
4. Producte acabatview
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.
Imatge 4.1: Part superior view of the ZK-502MT amplifier board showing the main components, input/output terminals, and control knob shafts.
Imatge 4.2: Part inferior view of the ZK-502MT amplifier board, displaying the model number and circuit board traces.
5. Especificacions
| Paràmetre | Valor |
|---|---|
| Model de producte | ZK-502MT |
| Versió Bluetooth | 5.0 (unobstructed range up to 15 meters / 49 feet) |
| Relació senyal/soroll (SNR) | > 90 dB |
| Mètode d'entrada | AUX + Bluetooth-Compatible |
| Nombre de canals | 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 |
| Mecanismes de protecció | Overheating, Overcurrent, Short Circuit, Voltage Protecció |
| Dimensions del producte (L*W*H) | 89mm * 60mm * 21mm (overall, including connectors/knobs) |
| Board Dimensions (L*W) | 74mm * 60mm (board only) |
| Pes del producte | Approximately 111g (including packaging) |
Image 5.1: ZK-502MT amplifier board with board dimensions of 74mm x 60mm indicated.
6. Instruccions de configuració
- Install Heat Sink: Attach the provided heat sink to the amplifier chip on the board. Ensure good contact for efficient heat dissipation.
- Connectar els altaveus: 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.
- Connecteu la font d'alimentació: 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.
- Instal·leu els botons: Place the three control knobs onto their respective shafts (Volume, Treble, Bass).
- Encès: Once all connections are secure, turn on the power supply. The amplifier board will power on.
7. Instruccions de funcionament
7.1. Connexió Bluetooth
- Assegureu-vos el ampLa placa del lifter està encesa.
- 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. Connexió d'entrada AUX
- Connect your audio source device to the AUX-IN port on the amplifier board using a 3.5mm audio cable.
- El amplifier will automatically switch to AUX input when a cable is detected.
7.3. Adjusting Audio
- Control de volum: Rotate the Volume knob to adjust the overall output level.
- Control dels aguts: Rotate the Treble knob to increase or decrease high-frequency sounds.
- Control de baix: Rotate the Bass knob to increase or decrease low-frequency sounds.
8. Manteniment
- Neteja: Utilitzeu un drap suau i sec per netejar-lo ampplaca de lificador. No utilitzeu netejadors líquids ni dissolvents.
- Emmagatzematge: Quan no s'utilitzi durant períodes prolongats, guardeu-lo amplifier in a cool, dry place away from direct sunlight and moisture.
- Inspecció: Periodically check all connections for tightness and ensure no wires are frayed or damaged.
9. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense sortida de so |
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| Bluetooth no emparellat |
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| So distorsionat |
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| Ampsobreescalfament més viu |
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10. Informació de la garantia
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. Atenció al client
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.