1. Продукт бүтүп калдыview
The Walfront ZK-502L is a compact and versatile Bluetooth 5.0 stereo audio amplifier module designed for DIY speaker projects. It offers robust power output and various protection features, making it suitable for a wide range of audio applications, including home audio systems and car audio modifications.
Figure 1: ZK-502L Bluetooth Power Amplifier Board. This image shows the compact design of the amplifier board with its various components, including the volume potentiometer, power input, and speaker terminals.
2. Негизги өзгөчөлүктөрү
- Bluetooth 5.0 туташуусу: Enables direct wireless audio streaming from compatible devices.
- Кеңири кубаттуулук диапазону: Operates with DC 5-24V, compatible with various power adapters, including most laptop power ports.
- Жогорку шайкештик: Supports a variety of speakers with impedances from 4Ω to 8Ω and power ratings from 30W to 200W.
- Built-in Filter Capacitor: Enhances sound signal processing for clearer audio output.
- Integrated Potentiometer: Knob design for convenient power ON/OFF and volume adjustment.
- Күчтүү коргоо механизмдери: Features reverse connection protection, overvoltage коргоо, undervoltage protection, over-temperature protection, short circuit protection, and self-recovery overheating protection.
- Clean Audio Performance: Designed to eliminate POPs sound during power-on, song skipping, and pausing.
- Acrylic Protective Shell: Provides physical protection for the board components.
2-сүрөт: Детальдуу view of the ZK-502L board highlighting key components and protection features.
3. Техникалык шарттар
| Параметр | Нарк |
|---|---|
| Модел | ZK 502L |
| Bluetooth версиясы | 5.0 |
| Каналдар | 2 (Стерео) |
| Киргизүү көлөмүtage | DC 5V-24V |
| Чыгуу күчү | Up to 50W per channel (Total 100W) |
| Adapted Speaker Impedance | 4Ω-8Ω |
| Adapted Speaker Power | 30W-200W |
| Сигнал-ызы-чуу катышы (SNR) | >90 дБ |
| Байланыш аралык | Up to 15 meters (Max, unobstructed) |
| Өлчөмдөрү (пакет) | 4.61 x 2.68 x 1.85 дюйм |
| Элемент Салмагы | 2.82 унция |
Figure 3: Physical dimensions and key electrical specifications of the ZK-502L board.
4. Орнотуу колдонмосу
4.1. Пакеттин мазмуну
Орнотууну баштоодон мурун, бардык компоненттер бар экенин текшериңиз:
- ZK-502L Bluetooth күчү Ampкөтөргүч такта
- Acrylic protective shell components
- Орнотуу жабдыктары (бурамалар, тирөөчтөр)
- DC power cable with 2.1mm jack
- Small screwdriver (for terminal connections)
Figure 4: Contents of the ZK-502L amplifier kit, including the board, protective casing, and accessories.
4.2. Power Connection
Connect a DC power supply (5V-24V) to the amplifier board. You can use either the DC 2.1mm socket or the terminal block labeled "DC5-24V". Ensure correct polarity when using the terminal block (+ to +, - to -) to prevent damage. For high power output, a higher voltage (e.g., 12V or 24V) is recommended.
4.3. Speaker Connection
Connect your speakers to the output terminals on the board. The board supports two channels (stereo). Ensure that the positive (+) and negative (-) terminals of each speaker are connected to the corresponding terminals on the amplifier board. The board is compatible with speakers having an impedance of 4Ω to 8Ω.
Figure 5: Diagram illustrating the correct connection of speakers and power supply to the ZK-502L ampкуткаруучу такта.
5. Иштөө нускамалары
5.1. Күйгүзүү/өчүрүү жана үндү көзөмөлдөө
The integrated knob potentiometer controls both power and volume. Rotate the knob clockwise to turn the unit ON and increase volume. Rotate counter-clockwise to decrease volume and turn the unit OFF.
5.2. Bluetooth Жупташтыруу
- камсыз кылуу amplifier board is powered on. The LED indicator will flash, indicating it is in Bluetooth pairing mode.
- Мобилдик түзмөгүңүздө (смартфон, планшет ж.б.) Bluetooth иштетип, жеткиликтүү түзмөктөрдү издеңиз.
- Locate and select the device named "BT-WUZHI" (or similar, as indicated by a voice prompt "Beep").
- Once successfully paired, the LED indicator on the amplifier board will remain steadily lit.
5.3. Аудио ойнотуу
After successful pairing, you can play audio from your connected device. The amplifier board will output the audio through the connected speakers. Use the potentiometer knob to adjust the overall volume. A voice prompt will sound if the Bluetooth connection is disconnected.
Figure 6: Visual guide demonstrating the steps for connecting and using the ZK-502L amplifier board with a mobile device and speakers.
6. Кыйынчылыктарды
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| No power/LED off | Incorrect power connection; Power supply issue; Potentiometer turned off. | Электр энергиясы менен камсыздоону текшерүү томtage (5-24V) and polarity. Ensure power adapter is functional. Rotate potentiometer clockwise to turn on. |
| Үн чыгышы жок | Speakers not connected correctly; Bluetooth not paired; Volume too low; Damaged speakers. | Check speaker wiring and polarity. Confirm Bluetooth is paired (LED solid). Increase volume on both amplifier and source device. Test with different speakers. |
| Bluetooth connection unstable/drops | Түзмөк өтө алыс amplifier; Interference from other devices; Low battery on source device. | Reduce distance between amplifier and source device (max 15m). Move away from strong Wi-Fi routers or other Bluetooth devices. Ensure source device has sufficient battery. |
| Бурмаланган үн | Volume too high (clipping); Speaker impedance mismatch; Faulty audio source. | Reduce volume. Ensure speakers are 4Ω-8Ω. Test with a different audio source. |
| "POPs" sound | This model is designed to prevent POPs sound. If experienced, check power supply stability or speaker connections. | Ensure stable power supply. Re-check all connections. If issue persists, contact support. |
7. Техникалык тейлөө
- Тазалоо: Тазалоо үчүн жумшак, кургак чүпүрөктү колдонуңуз amplifier board and protective casing. Avoid using liquid cleaners or solvents.
- Сактагыч: Узак мөөнөткө колдонулбаганда, сактаңыз ampliifier салкын, кургак жерде, тике күндүн нурунан жана экстремалдык температурадан алыс.
- Колдонуу: Handle the board with care to avoid damaging electronic components. Avoid static discharge.
8. Кепилдик жана колдоо
Walfront products are manufactured to high quality standards. For information regarding warranty coverage and terms, please refer to the documentation provided with your purchase or contact your retailer.
For technical assistance or inquiries, please contact Walfront customer support through the official Walfront store on Amazon or their designated support channels. Provide your product model (ZK 502L) and a detailed description of your issue for efficient service.
Онлайн ресурстар:
- Walfront Store on Amazon: Visit the Walfront Store
