1. Introduktion
Thank you for choosing the Daakro ZK-302T Bluetooth 5.3 Amplifier Board. This compact 2.0 channel audio amplifier is designed for DIY wireless speaker projects, offering 30W+30W output, precise treble and bass control, and versatile input options including Bluetooth 5.3, USB, and AUX. This manual will guide you through the installation, operation, and maintenance of your amplifier board to ensure optimal performance and longevity.
Figur 1: Daakro ZK-302T Bluetooth 5.3 Amplifier Board. This image shows the compact amplifier board with its three control knobs for treble, bass, and volume, along with the various input and output terminals.
2. Sikkerhedsoplysninger
Læs og forstå alle sikkerhedsinstruktioner, før du bruger dette produkt. Manglende overholdelse af disse instruktioner kan resultere i elektrisk stød, brand eller andre farer.
- Sørg for, at strømforsyningen voltage is within the specified range of DC 9-24V.
- Udsæt ikke amplifier board to moisture, water, or extreme temperatures.
- Undgå at kortslutte udgangsterminalerne.
- Afbryd strømmen, før du foretager tilslutninger eller afbrydelser.
- Opbevares utilgængeligt for børn.
- Do not attempt to disassemble or modify the board. Refer all servicing to qualified personnel.
- Sørg for korrekt ventilation for at forhindre overophedning.
- Dette produkt er kun designet til indendørs brug.
3. Opsætning og forbindelser
Follow these steps to correctly set up your Daakro ZK-302T amplivligere bræt.
3.1 Pakkens indhold
Bekræft at alle varer er til stede i din pakke:
- Daakro ZK-302T Bluetooth Amplivligere bestyrelse
- Power adapter cable (if included)
- Skruetrækker
- Mounting hardware (standoffs, screws)
- Heat sink (if not pre-installed)
Figur 2: What's in the Box. This image displays the amplifier board along with included accessories such as a screwdriver, power adapter cable, and mounting hardware.
3.2 Komponentidentifikation
Familiarize yourself with the various ports and controls on the amplivligere bræt.
Figur 3: Component Identification. This diagram highlights key components including the power input, USB input, AUX input, left and right channel outputs, and the treble, bass, and volume control knobs.
- Power Input (DC 9-24V): Connect your DC power supply here.
- USB-indgang: For audio input from a USB source.
- AUX Input (3.5mm Jack): For wired audio input from devices like phones or PCs.
- Left Channel Output (L+ L-): Connect to your left speaker.
- Right Channel Output (R+ R-): Connect to your right speaker.
- Diskantkontrol: Rotate to adjust high-frequency audio.
- Baskontrol: Rotate to adjust low-frequency audio.
- Lydstyrkekontrol: Rotate to adjust overall audio output level.
3.3 Tilslutning af højttalere
- Sørg for amplifier board is powered off.
- Connect your speakers (4-8Ω, 20-200W) to the corresponding Left (L+ L-) and Right (R+ R-) channel output terminals. Ensure correct polarity (+ to + and - to -).
- Tighten the terminal screws to secure the speaker wires.
3.4 Strømtilslutning
- Connect a DC power supply (9-24V) to the power input terminal.
- Ensure the power supply provides sufficient current for your speakers. Refer to the "Power Output Comparison Table" in Section 4.3 for optimal power matching.
4. Betjeningsvejledning
4.1 Powering On and Input Selection
- Once speakers and power are connected, turn on the power supply. The ampLifier-kortet vil automatisk gå i Bluetooth-parringstilstand.
- The board supports three audio input modes: Bluetooth, USB, and AUX. The board will automatically switch to the last active input or prioritize a newly connected input.
Figur 4: Multiple Audio Input Modes. This image illustrates the three input options: Bluetooth, 3.5mm AUX, and USB, and shows compatible devices like mobile phones, tablets, and computers.
4.2 Bluetooth -parring
- Sørg for amplifier board is powered on and in Bluetooth mode.
- Aktiver Bluetooth på din mobilenhed (telefon, tablet osv.) og søg efter tilgængelige enheder.
- Select "ZK-302T" from the list of devices to pair. No password is required.
- Once paired, you will hear a confirmation tone, and the Bluetooth indicator light (if present) will stabilize.
- The Bluetooth connection range is approximately 16.4 feet (5 meters).
Figur 5: Bluetooth Connection. This image shows a smartphone connected via Bluetooth to the ZK-302T amplifier board, indicating a wireless range of up to 16.4 feet (5 meters).
4.3 Justering af lyd
- Lydstyrkekontrol: Rotate the VOLUME knob to increase or decrease the overall sound level.
- Diskantkontrol: Rotate the TREBLE knob to adjust the high-frequency response. Turn clockwise for more treble, counter-clockwise for less.
- Baskontrol: Rotate the BASS knob to adjust the low-frequency response. Turn clockwise for more bass, counter-clockwise for less.
4.4 Power Output Considerations
Optimal audio output requires a suitable power supply and speaker impedance. The table below illustrates the approximate output power based on input voltage and speaker impedance.
Figur 6: Power Output Comparison Table. This table details the R&L channel output power at 1KHz for various input voltages (12V, 15V, 19V, 24V) and speaker impedances (4Ω, 8Ω).
Important Note: There must be enough voltage and current input to achieve the rated power output. Higher voltage and current generally result in higher power. For the same conditions, a smaller speaker impedance will yield greater power.
5. Vedligeholdelse
- Rensning: Brug en blød, tør klud til at rengøre ampBrug ikke flydende rengøringsmidler eller opløsningsmidler.
- Opbevaring: Opbevar enheden et køligt, tørt sted væk fra direkte sollys og ekstreme temperaturer.
- Ventilation: Ensure the board has adequate airflow to prevent overheating, especially during prolonged use at high volumes.
- Forbindelser: Periodically check all connections for tightness and ensure no wires are frayed or exposed.
6. Fejlfinding
If you encounter issues with your Daakro ZK-302T amplifier board, refer to the following common problems and solutions.
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lydudgang |
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| Forvrænget lyd |
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| Problemer med Bluetooth-forbindelse |
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| Overophedning |
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7. Specifikationer
| Feature | Detalje |
|---|---|
| Modelnummer | ZK-302T |
| Udgangseffekt | 30W + 30W (2.0 Channel) |
| Amplifier Chip | Dual TPA3110D2 HiFi Chip |
| Bluetooth version | 5.3 |
| Input bindtage | DC 9-24V |
| Lydindgange | Bluetooth, USB, AUX (3.5 mm) |
| Højttalerimpedans | 4-8Ω |
| Recommended Speaker Power | 20-200W |
| Produktmål (L x B x H) | 4.33 x 2.76 x 1.97 tommer |
| Vægt | 3.53 ounce |
| Beskyttelsesmekanismer | Over-voltage, Under-bindtage, Over-temperature, Short-circuit, Reverse connection |
8. Garanti og support
The Daakro ZK-302T Bluetooth 5.3 Amplifier Board comes with a 30-dages retur-/erstatningspolitik from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper installation.
For technical support, warranty claims, or any questions regarding your product, please contact Daakro customer service through the platform where you purchased the product. Please have your purchase details and model number (ZK-302T) ready.
