Zavedení
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.
Vlastnosti produktu
- Vysoce kvalitní zvuk: 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).
- Připojení Bluetooth 5.0: Offers seamless wireless connection with a range of over 15 meters in unobstructed environments.
- Robustní ochrana: Zahrnuje overvoltage, podpaltage, overheating, DC detection, and short circuit protection for enhanced safety and durability.
- Wide Speaker Compatibility: Adaptable to 10-100W, 4-8Ω speakers.
- Flexibilní napájení: Operates with a DC power supply ranging from 9V to 24V.
- Kompaktní design: Measures 60x60x29mm, making it suitable for various applications and portable setups.
Obsah balení
Zkontrolujte prosím, zda jsou v balení přítomny všechny komponenty:
- ZK-502H Amplifikační deska
- Top and Bottom Acrylic Plates
- Ovladač hlasitosti
- Chladič
- Šroubovák
- Mounting Hardware (screws, standoffs)
- DC napájecí adaptérový kabel

Image: All components included with the ZK-502H amplifier board, laid out for assembly.
Pokyny pro nastavení
1. Assembly (Optional, if not pre-assembled)
- Attach the heat sink to the main chip on the amplifikační deska.
- Zajistěte amplifier board between the two acrylic plates using the provided standoffs and screws.
- Install the volume knob onto the potentiometer shaft.
2. Připojení napájení
- Zajistěte 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.
- Důležité: Pomocí vyššího objtage within the specified range (e.g., 24V) is recommended for achieving higher power output.
3. Připojení reproduktoru
- 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. Připojení zvukového vstupu
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.

Obrázek: Nahoře view of the ZK-502H amplifier board, highlighting the AUX IN, Bluetooth, USB IN, DC IN, and speaker output terminals.
Návod k obsluze
1. Zapnutí/vypnutí
- 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 ampživější.
2. Ovládání hlasitosti
- Rotate the large silver knob clockwise to increase volume.
- Rotate the large silver knob counter-clockwise to decrease volume.
3. Výběr vstupního režimu
The amplifier automatically detects the input source. If multiple sources are connected, it will prioritize them or switch based on activity.
- Režim Bluetooth: Při zapnutí se amplifier will enter Bluetooth pairing mode. A voice prompt will confirm "Bluetooth Mode".
- Režim AUX: If an AUX cable is connected and playing audio, the amplifier will switch to AUX input.
- Režim USB: If a USB flash drive is inserted or connected to a computer, the amplifier will switch to USB input.
4. Párování Bluetooth
- Zajistěte 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.
Specifikace
| Model produktu | ZK-502H |
| Čipové řešení | TPA3116D2 (with AM interference suppression) |
| Zvukový vstup | Bluetooth 5.0, AUX (3.5mm), USB Flash Drive, Computer USB Sound Card |
| Napájení | DC 9-24V |
| Výstupní výkon (max.) | 50W + 50W (at 24V, 4Ω) |
| Impedance reproduktoru | 4-8Ω |
| Výkon reproduktoru | 10-100W |
| Počet kanálů | 2.0 Stereo (Left and Right) |
| Verze Bluetooth | 5.0 |
| Dosah Bluetooth | >15 meters (unobstructed) |
| Ochranné mechanismy | Přepětítage, Undervoltage, Overheating, DC Detection, Short Circuit Protection |
| Rozměry produktu | Rozměr 60 x 60 x 29 mm |
| Hmotnost produktu | Approximately 104g (including packaging) |
Power Output Table:
| Napájecí zdroj Voltage | 8Ω Speaker Output | 4Ω Speaker Output |
|---|---|---|
| 12V | 12W + 12W | 20W + 20W |
| 15V | 18W + 18W | 30W + 30W |
| 19V | 32W + 32W | 40W + 40W |
| 24V | 38W + 38W | 50W + 50W |
Údržba
- Udržujte ampZáchranná deska čistá a bez prachu. K čištění použijte měkký, suchý hadřík.
- Nevystavujte zařízení vlhkosti, extrémním teplotám nebo přímému slunečnímu záření.
- Ensure proper ventilation to prevent overheating, especially during prolonged use at high volumes.
- Nepokoušejte se rozebírat ani upravovat amplifier beyond the initial assembly steps, as this may void any potential warranty and could cause damage.
Odstraňování problémů
| Problém | Možná příčina | Řešení |
|---|---|---|
| Žádný zvukový výstup. |
|
|
| Zařízení Bluetooth se nemůže spárovat. |
|
|
| Zkreslený zvuk. |
|
|
Záruka a podpora
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.
Výrobce: EC Buying
Model: ZK-502H