1. Introduktion
The Daakro ZK-502MT Bluetooth Amplifier Board is a versatile 2.0 channel audio amplifier designed for DIY home audio projects. It features dual HiFi amplifier chips, providing clear and high-fidelity sound. With support for both Bluetooth 5.0 and AUX inputs, it offers flexible connectivity options for various audio sources. This manual provides detailed instructions for setup, operation, and maintenance of your ZK-502MT amplivligere bræt.
Image 1.1: The ZK-502MT Bluetooth Amplifier Board, including a screwdriver and a DC power adapter.
2. Nøglefunktioner
- Dual HiFi AmpLifier Chip: Utilizes two HiFi amplifier chips with PurePath technology for ultra-high resolution, low distortion, and high-fidelity sound.
- 2.0 Kanalkonfiguration: Supports left and right channel output, each providing 50W output power for an immersive sound experience.
- Dobbelte lydindgangstilstande: Seamlessly switch between Bluetooth 5.0 for wireless connectivity and traditional AUX input for wired audio sources.
- Bred anvendelse: Compatible with a wide input voltage range from 9V to 24V DC and suitable for 20-200W, 4-8Ω speakers.
- Omfattende beskyttelse: Built-in protection mechanisms include over-voltage, under-bindtage, over-temperature, short-circuit, and reverse connection protection.
- Treble and Bass Control: Independent knobs for adjusting treble and bass to customize your audio output.
3. Hvad er der i æsken
Når du åbner pakken, skal du kontrollere, at alle følgende komponenter er inkluderet:
- ZK-502MT Bluetooth Amplivligere bestyrelse
- Top Plate with Control Labels
- Bundplade
- Skruetrækker
- DC-strømadapterstik
- Heat Sink
- Mounting Hardware (Screws, Standoffs)
- Control Knobs (Volume, Treble, Bass)
Image 3.1: All components included in the ZK-502MT package.
4. Opsætningsvejledning
Follow these steps to properly set up your ZK-502MT Bluetooth Amplifier Board.
4.1 Komponentmontering
- Attach Heat Sink: Secure the provided heat sink to the main amplifier chip on the board. Ensure good contact for optimal heat dissipation.
- Saml Casing: Use the provided standoffs and screws to attach the top and bottom plates to the amplifier board. The top plate has labels for controls and ports.
- Installer knapper: Place the three control knobs onto their respective shafts for Volume, Bass, and Treble.
Image 4.1: Proper installation of the heat sink and control knobs.
4.2 Højttalertilslutning
Tilslut dine højttalere til amplifier board using the screw terminals. The board supports 2.0 channel output (Left and Right). Ensure correct polarity (+ and -) for each speaker.
- Connect the positive (+) terminal of your left speaker to the 'L+' terminal on the board.
- Connect the negative (-) terminal of your left speaker to the 'L-' terminal on the board.
- Connect the positive (+) terminal of your right speaker to the 'R+' terminal on the board.
- Connect the negative (-) terminal of your right speaker to the 'R-' terminal on the board.
De amplifier board is suitable for 20-200W, 4-8Ω speakers.
Image 4.2: Connection points for speakers, power, and AUX input.
4.3 Strømtilslutning
Connect a DC power supply (9V-24V) to the power input terminal. The board includes a DC power adapter connector for convenience.
- Sørg for, at din strømforsyning voltage er inden for området 9V til 24V DC.
- Connect the power supply to the DC-IN port on the amplivligere bræt.
- The board has built-in reverse connection protection, but always double-check polarity before powering on.
Image 4.3: Detail of the power input and speaker terminals.
5. Betjeningsvejledning
This section details how to operate your ZK-502MT amplivligere bræt.
5.1 Tænd/sluk
- To power on, ensure all connections are secure, then connect the power supply to a power outlet. The power indicator LED will illuminate.
- To power off, disconnect the power supply from the outlet.
5.2 Volume, Treble, and Bass Control
De amplifier board features three rotary knobs for audio adjustment:
- Bind: Rotate the "VOLUME" knob clockwise to increase volume and counter-clockwise to decrease.
- Bas: Rotate the "BASS" knob clockwise to increase bass frequencies and counter-clockwise to decrease.
- Diskant: Rotate the "TREBLE" knob clockwise to increase treble frequencies and counter-clockwise to decrease.
5.3 Lydinputtilstande
The ZK-502MT supports two audio input modes: Bluetooth and AUX.
Billede 5.1: Den amplifier board supports both Bluetooth and AUX input modes.
5.3.1 Bluetooth-tilstand
- Sørg for ampLifier-kortet er tændt.
- The board will automatically enter Bluetooth pairing mode. A voice prompt or indicator light may confirm this.
- Aktiver Bluetooth på din lydkildeenhed (f.eks. smartphone, tablet, computer) og søg efter tilgængelige enheder.
- Select "ZK-502MT" from the list of devices to pair. No password is required.
- Once paired, a confirmation sound will be heard, and you can begin playing audio wirelessly.
Image 5.2: Bluetooth connectivity range of the ZK-502MT.
5.3.2 AUX-indgangstilstand
- Connect a 3.5mm audio cable from your audio source device (e.g., MP3 player, TV, laptop) to the "AUX-IN" port on the amplivligere bræt.
- De amplifier board will automatically switch to AUX input mode when a cable is detected.
- Begin playing audio from your source device.
6. Tekniske specifikationer
| Feature | Specifikation |
|---|---|
| Modelnummer | ZK-502MT |
| Mærke | Daakro |
| Antal kanaler | 2.0 (stereo) |
| Udgangseffekt | 50W + 50W (I alt 100W) |
| Input bindtagRækkevidde | DC 9V - 24V |
| Højttalerimpedans | 4-8Ω |
| Speaker Power Compatibility | 20W - 200W |
| Bluetooth version | 5.0 |
| Lydindgange | Bluetooth, AUX (3.5mm) |
| Dimensioner (L x B x H) | 3.54 x 2.36 x 0.83 tommer (9 x 6 x 2.1 cm) |
| Varens vægt | 4.2 ounce (119 gram) |
Image 6.1: Physical dimensions of the ZK-502MT amplivligere bræt.
Image 6.2: Power Output Comparison Table for different input voltages and speaker impedances.
7. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lydudgang |
|
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| Bluetooth forbinder ikke |
|
|
| Lydforvrængning eller dårlig kvalitet |
|
|
| Amplifier board gets hot |
|
|
8. Vedligeholdelse
For at sikre din ZK-502MT's lange levetid og optimale ydeevne amplifier board, follow these simple maintenance guidelines:
- Rensning: Gently wipe the surface of the board with a soft, dry cloth. Do not use liquid cleaners or solvents, as they may damage the electronic components.
- Fjernelse af støv: Periodically use compressed air to remove dust from the heat sink and other components to maintain proper cooling.
- Opbevaring: Hvis du opbevarer amplifier board for an extended period, disconnect it from power and store it in a cool, dry place away from direct sunlight and excessive humidity.
- Håndtering: Always handle the board by its edges to avoid touching sensitive components or causing static discharge.
9. Garanti og support
Daakro is committed to providing high-quality products and excellent customer service.
- Garanti: Dette produkt leveres med en 36 måneders garanti fra købsdatoen, dækker fabrikationsfejl. Gem venligst din købsbevis i tilfælde af garantikrav.
- Kundeservice: For any questions, technical assistance, or warranty inquiries, please contact Daakro customer support.
- Online support: Visit the official Daakro Store on Amazon for more information and support resources: Daakro Amazon Store.
Image 9.1: Daakro After-Sales Support information.
