1. Pengenalan
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. Maklumat Keselamatan
- Bekalan Kuasa: 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.
- Keserasian Pembesar Suara: Connect speakers with an impedance of 4-8Ω and a power rating of 15-100W. Using incompatible speakers may damage the amppapan hidup.
- Mekanisme Perlindungan: 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.
- Persekitaran: Mengendalikan amplifier in a dry, well-ventilated area. Avoid exposure to moisture, dust, or extreme temperatures.
- Pengendalian: Handle the board with care to avoid damaging electronic components. Avoid touching the circuit board while powered on.
3. Kandungan Pakej
Sahkan bahawa semua item yang disenaraikan di bawah disertakan dalam pakej anda:
- ZK-502MT Bluetooth-Compatible AmpLembaga yang lebih hidup
- Knobs (Volume, Treble, Bass)
- Mounting hardware (screws, standoffs)
- DC power adapter connector
- Pemutar skru kecil
- Sinki haba
Image 3.1: ZK-502MT amplifier board, three control knobs, mounting hardware, DC power connector, screwdriver, and heat sink.
4. Produk Lebihview
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.
Imej 4.1: Atas view of the ZK-502MT amplifier board showing the main components, input/output terminals, and control knob shafts.
Imej 4.2: Bawah view of the ZK-502MT amplifier board, displaying the model number and circuit board traces.
5. Spesifikasi
| Parameter | Nilai |
|---|---|
| Model Produk | ZK-502MT |
| Versi Bluetooth | 5.0 (unobstructed range up to 15 meters / 49 feet) |
| Nisbah Isyarat kepada Bunyi (SNR) | > 90dB |
| Kaedah Input | AUX + Bluetooth-Compatible |
| Bilangan Saluran | 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 |
| Mekanisme Perlindungan | Overheating, Overcurrent, Short Circuit, Voltage Perlindungan |
| Dimensi Produk (L*W*H) | 89mm * 60mm * 21mm (overall, including connectors/knobs) |
| Board Dimensions (L*W) | 74mm * 60mm (board only) |
| Berat Produk | Approximately 111g (including packaging) |
Image 5.1: ZK-502MT amplifier board with board dimensions of 74mm x 60mm indicated.
6. Arahan Persediaan
- Install Heat Sink: Attach the provided heat sink to the amplifier chip on the board. Ensure good contact for efficient heat dissipation.
- Sambungkan Pembesar Suara: 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.
- Sambungkan Bekalan Kuasa: 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.
- Pasang Tombol: Place the three control knobs onto their respective shafts (Volume, Treble, Bass).
- Hidupkan kuasa: Once all connections are secure, turn on the power supply. The amplifier board will power on.
7. Arahan Operasi
7.1. Sambungan Bluetooth
- Memastikan amplifier board is powered on.
- Pada peranti sumber audio anda (cth., telefon pintar, tablet), dayakan Bluetooth dan cari peranti yang tersedia.
- 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.
- The amplifier will automatically switch to AUX input when a cable is detected.
7.3. Adjusting Audio
- Kawalan Kelantangan: Rotate the Volume knob to adjust the overall output level.
- Kawalan Treble: Rotate the Treble knob to increase or decrease high-frequency sounds.
- Kawalan Bes: Rotate the Bass knob to increase or decrease low-frequency sounds.
8. Penyelenggaraan
- Pembersihan: Gunakan kain lembut dan kering untuk membersihkannya amppapan penghawa dingin. Jangan gunakan pembersih cecair atau pelarut.
- Storan: Apabila tidak digunakan untuk tempoh yang lama, simpan amplifier in a cool, dry place away from direct sunlight and moisture.
- Pemeriksaan: Periodically check all connections for tightness and ensure no wires are frayed or damaged.
9. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada keluaran bunyi |
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| Bluetooth tidak berpasangan |
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| Bunyi herot |
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| Amppemanasan lebih panas |
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10. Maklumat Waranti
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. Sokongan Pelanggan
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.