1. Introduktion
This manual provides detailed instructions for the installation, operation, and maintenance of your Dilwe Bluetooth 5.0 Amplifier Board (Model ZK-HT21). This 2.1 channel stereo power amplifier board is designed for DIY sound systems, offering 160W+160W+220W output with Bluetooth 5.0, AUX, and USB input options. Please read this manual thoroughly before use to ensure proper functionality and safety.
2. Sikkerhedsoplysninger
- Strømforsyning: Use a DC 15-36V power supply. Ensure the voltage is within the specified range to prevent damage.
- Polaritet: Observe correct polarity when connecting the power supply. The board includes anti-reverse protection, but incorrect connection can still cause issues.
- Ventilation: Sørg for tilstrækkelig ventilation omkring amplifier board, especially around the built-in cooling fan, to prevent overheating.
- Højttalerimpedans: Connect speakers with an impedance of 4-8Ω. Using speakers outside this range may affect performance or damage the board.
- Kortslutninger: Avoid short circuits on output terminals. The board has short circuit protection, but caution is advised during installation.
- Miljø: Keep the board away from moisture, dust, and extreme temperatures.
- Professionel installation: If you are unfamiliar with electronic components, seek professional assistance for installation.
3. Nøglefunktioner
- Avanceret beskyttelse: Features anti-reverse, under-voltage, over-temperature, over-current, and short-circuit protection mechanisms for enhanced safety and durability.
- Integreret køleventilator: Equipped with an ultra-quiet cooling fan to prevent overheating, ensure stable operation, and prolong the lifespan of the device.
- Justerbare lydkontroller: Allows precise adjustment of frequency level, treble, and bass for customized sound output.
- Høj udgangseffekt: Delivers 160W for left channel, 160W for right channel, and 220W for the subwoofer, providing robust audio performance.
- Alsidig tilslutning: Supports AUX, Bluetooth 5.0, and USB input methods for wide compatibility with various audio sources.

Figur 3.1: Overview of the Dilwe Bluetooth 5.0 AmpLifier-kort og medfølgende tilbehør.

Figure 3.2: The integrated cooling fan ensures optimal temperature regulation.
4. Pakkens indhold
Bekræft at alle varer er til stede i pakken:
- 1 x Amplivligere bestyrelse
- 1 x adapter
- 1 x dæksel
- 1 x Bundplade
- 5 x Knob Cover
- 1 x skruetrækker
- 9 x skrue
- 4 x Short Screw Column
- 4 x Long Screw Column
5. Opsætningsvejledning
Følg disse trin for at konfigurere din ampLifier-bræt:
- Saml C'etasing: Attach the cover and bottom plate to the amplifier board using the provided screws and screw columns. This protects the internal components.
- Identificer forbindelser: Refer to the diagram below to locate the power input, audio inputs (AUX, BT, USB), and speaker outputs (Left Channel, Right Channel, Subwoofer).
- Tilslut højttalere: Connect your 4-8Ω speakers to the corresponding output terminals. Ensure correct polarity (+/-) for each speaker.
- Tilslut lydkilde:
- Bluetooth: Power on the board, then search for "BT" on your device's Bluetooth settings and pair.
- AUX: Connect your audio source (e.g., smartphone, MP3 player) to the AUX input using a 3.5mm audio cable.
- USB: Connect a USB device for audio input.
- Tilslut strøm: Connect a DC 15-36V power supply to the Power Input (5.5x2.1DC plug or 2P terminal). Ensure the power supply is off before connecting.
- Tænd: Once all connections are secure, turn on the power supply. The board is now ready for operation.

Figure 5.1: Connection Diagram and Control Layout. This diagram illustrates the various input/output ports and control knobs on the amplivligere bræt.

Figur 5.2: Detaljeret view of the power input and speaker output terminals.
6. Betjeningsvejledning
Efter vellykket opsætning skal du betjene amplifier board using the following controls:

Figur 6.1: Detaljeret view of the control knobs.
- Total Volume / Switch (MAIN C/VOL): This knob controls the overall volume of the system and also acts as the power switch. Turn clockwise to increase volume, counter-clockwise to decrease. Press to toggle power.
- Left and Right Channel Treble (TRE): Adjust this knob to control the high-frequency response of the left and right stereo channels.
- Venstre og højre kanal bas (BASS): Adjust this knob to control the low-frequency response of the left and right stereo channels.
- Subwoofer-lydstyrke (VOLUME): Controls the output volume specifically for the subwoofer channel.
- Subwooferfrekvens (FREQ): Adjusts the crossover frequency for the subwoofer, typically ranging from 20-200Hz, allowing you to fine-tune the bass response.
- Valg af input: The board automatically detects the active input (AUX, BT, USB). Ensure your desired audio source is playing. For Bluetooth, ensure your device is paired.
7. Vedligeholdelse
Korrekt vedligeholdelse sikrer din bils levetid og optimale ydeevne ampLifier-bræt:
- Rensning: Gently wipe the board and casing with a dry, soft cloth. Do not use liquid cleaners or solvents. Ensure the device is powered off and disconnected from the power supply before cleaning.
- Ventilation: Regularly check that the cooling fan and heatsink are free from dust and obstructions. A clogged fan can lead to overheating.
- Opbevaring: Når den ikke er i brug i længere perioder, skal den opbevares amplifier board in a cool, dry place, away from direct sunlight and extreme temperatures.
- Forbindelser: Kontrollér regelmæssigt alle forbindelser (strøm, højttalere, lydindgange) for at sikre, at de er fastgjorte og fri for korrosion.

Figure 7.1: Ensure the heatsink and fan remain clear for effective cooling.
8. Fejlfinding
Hvis du støder på problemer, kan du se følgende almindelige problemer og løsninger:
| 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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9. Specifikationer
| Feature | Detalje |
|---|---|
| Working Voltage | DC 15-36V |
| Bluetooth version | 5.0 |
| Indtastningsmetode | AUX, Bluetooth, USB |
| Antal kanaler | 2.1 Channel (Left + Right + Subwoofer) |
| Udgangseffekt | 160W (Left) + 160W (Right) + 220W (Subwoofer) |
| Adapter Speakers | 30-200W, 4-8Ω |
| Materiale | PCB |
| Varens vægt | 14.1 ounce |
| Pakkedimensioner | 6.5 x 5.79 x 1.93 tommer |
| Modelnummer | ZK-HT21 (Dilweikf3vu1toz861) |
10. Garanti og support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.
Manufacturer: Dilwe