Танилцуулга
The EC Buying ZK-502H is a high-fidelity 2.0 stereo digital power amplifier module designed to deliver clear and powerful audio. Featuring the TPA3116D2 chip, this amplifier board provides 50W+50W output and supports multiple audio input sources including Bluetooth 5.0, AUX, and USB. It is equipped with various protection mechanisms to ensure stable and secure performance.
Бүтээгдэхүүний онцлог
- Өндөр нарийвчлалтай аудио: Delivers 50W+50W output with the TPA3116D2 chip for crystal-clear stereo sound.
- Multiple Input Sources: Supports Bluetooth 5.0, AUX (3.5mm jack), USB flash drive, and computer USB sound card (plug and play).
- Bluetooth 5.0 холболт: Offers seamless wireless connection with a range of over 15 meters in unobstructed environments.
- Бат бөх хамгаалалт: Overvol орноtage, undervoltage, overheating, DC detection, and short circuit protection for enhanced safety and durability.
- Wide Speaker Compatibility: Adaptable to 10-100W, 4-8Ω speakers.
- Уян цахилгаан хангамж: Operates with a DC power supply ranging from 9V to 24V.
- Компакт дизайн: Measures 60x60x29mm, making it suitable for various applications and portable setups.
Багцын агуулга
Таны багцад бүх бүрэлдэхүүн хэсгүүд байгаа эсэхийг шалгана уу:
- ZK-502H AmpАмьдралын самбар
- Top and Bottom Acrylic Plates
- Эзлэхүүний товчлуур
- Дулаан шингээгч
- Халив
- Mounting Hardware (screws, standoffs)
- DC тэжээлийн адаптер кабель

Image: All components included with the ZK-502H amplifier board, laid out for assembly.
Тохируулах заавар
1. Assembly (Optional, if not pre-assembled)
- Attach the heat sink to the main chip on the ampөргөгч самбар.
- -ийг аюулгүй болго amplifier board between the two acrylic plates using the provided standoffs and screws.
- Install the volume knob onto the potentiometer shaft.
2. Эрчим хүчний холболт
- -ийг баталгаажуулах amplifier is switched off and the volume knob is set to minimum.
- Connect a DC power supply (9-24V) to the DC IN port (labeled DC9-24V). Use the provided DC power adapter cable if necessary.
- Чухал: Илүү өндөр боть ашиглахtage within the specified range (e.g., 24V) is recommended for achieving higher power output.
3. Чанга яригчийн холболт
- Connect your passive speakers to the speaker output terminals (labeled L+, L-, R+, R-).
- Ensure correct polarity: positive (+) to positive, negative (-) to negative for each channel.
- The amplifier supports speakers with an impedance of 4-8Ω and power rating of 10-100W.
4. Аудио оролтын холболт
Choose one of the following audio input methods:
- Bluetooth: No physical connection needed. Proceed to Operating Instructions for pairing.
- AUX: Connect an audio source (e.g., smartphone, MP3 player) to the 3.5mm AUX IN jack using an audio cable.
- USB: Insert a USB flash drive into the USB IN port or connect the amplifier to a computer via USB for use as a sound card.

Зураг: дээд view of the ZK-502H amplifier board, highlighting the AUX IN, Bluetooth, USB IN, DC IN, and speaker output terminals.
Ашиглалтын заавар
1. Асаах/унтраах
- Press the ON/OFF button to power on the amplifier. A blue indicator light will illuminate.
- Press the ON/OFF button again to power off the ampнастан.
2. Дууны түвшний хяналт
- Rotate the large silver knob clockwise to increase volume.
- Rotate the large silver knob counter-clockwise to decrease volume.
3. Оруулах горимын сонголт
The amplifier automatically detects the input source. If multiple sources are connected, it will prioritize them or switch based on activity.
- Bluetooth горим: асаалттай үед amplifier will enter Bluetooth pairing mode. A voice prompt will confirm "Bluetooth Mode".
- AUX горим: If an AUX cable is connected and playing audio, the amplifier will switch to AUX input.
- USB горим: If a USB flash drive is inserted or connected to a computer, the amplifier will switch to USB input.
4. Bluetooth хослол
- -ийг баталгаажуулах amplifier is powered on and in Bluetooth mode (indicated by a voice prompt).
- On your audio device (e.g., smartphone, tablet), enable Bluetooth and search for available devices.
- Select "ZK-502H" from the list of devices to pair.
- Once paired, a voice prompt will confirm the connection. You can now play audio from your device.
Үзүүлэлтүүд
| Бүтээгдэхүүний загвар | ZK-502H |
| Чипийн шийдэл | TPA3116D2 (with AM interference suppression) |
| Аудио оролт | Bluetooth 5.0, AUX (3.5mm), USB Flash Drive, Computer USB Sound Card |
| Эрчим хүчний хангамж | DC 9-24V хувилбартай |
| Гаралтын хүч (Макс) | 50W + 50W (at 24V, 4Ω) |
| Чанга яригчийн эсэргүүцэл | 4-8 Ом |
| Чанга яригч | 10-100 Вт |
| Сувгийн тоо | 2.0 Stereo (Left and Right) |
| Bluetooth хувилбар | 5.0 |
| Bluetooth хүрээ | >15 meters (unobstructed) |
| Хамгаалалтын механизмууд | Хэт ихtage, Undervoltage, Overheating, DC Detection, Short Circuit Protection |
| Бүтээгдэхүүний хэмжээс | 60 x 60 x 29 мм |
| Бүтээгдэхүүний жин | Approximately 104g (including packaging) |
Power Output Table:
| Цахилгаан хангамж Voltage | 8Ω Speaker Output | 4Ω Speaker Output |
|---|---|---|
| 12 В | 12W + 12W байна | 20W + 20W байна |
| 15 В | 18W + 18W байна | 30W + 30W байна |
| 19 В | 32W + 32W байна | 40W + 40W байна |
| 24 В | 38W + 38W байна | 50W + 50W байна |
Засвар үйлчилгээ
- -г хадгал amplifier board clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to moisture, extreme temperatures, or direct sunlight.
- Ensure proper ventilation to prevent overheating, especially during prolonged use at high volumes.
- Үүнийг задлах эсвэл өөрчлөхийг бүү оролдоорой amplifier beyond the initial assembly steps, as this may void any potential warranty and could cause damage.
Алдааг олж засварлах
| Асуудал | Боломжит шалтгаан | Шийдэл |
|---|---|---|
| Дууны гаралт байхгүй. |
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| Bluetooth төхөөрөмжийг холбох боломжгүй. |
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| Гажуудсан дуу чимээ. |
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Баталгаат болон дэмжлэг
For product support, technical assistance, or warranty inquiries, please contact EC Buying customer service through the retailer where the product was purchased. Please retain your proof of purchase for any warranty claims.
Үйлдвэрлэгч: Европын холбооны худалдан авалт
Загвар: ZK-502H