Daakro ZK-502MT
ZK-502MT Bluetooth Amplifier Board колдонуучусу
Model: ZK-502MT | Brand: Daakro
1. Киришүү
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 ampкуткаруучу такта.

Image 1.1: The ZK-502MT Bluetooth Amplifier Board, including a screwdriver and a DC power adapter.
2. Негизги өзгөчөлүктөрү
- Dual HiFi Ampкөтөргүч чип: Utilizes two HiFi amplifier chips with PurePath technology for ultra-high resolution, low distortion, and high-fidelity sound.
- 2.0 Каналдын конфигурациясы: Supports left and right channel output, each providing 50W output power for an immersive sound experience.
- Dual Audio Input Modes: Seamlessly switch between Bluetooth 5.0 for wireless connectivity and traditional AUX input for wired audio sources.
- Кеңири колдонуу: Compatible with a wide input voltage range from 9V to 24V DC and suitable for 20-200W, 4-8Ω speakers.
- Комплекстүү коргоо: Built-in protection mechanisms include over-voltage, томдун астындаtage, 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. Кутуда эмне бар
Пакетти ачканда, төмөнкү компоненттердин бардыгы камтылганын текшериңиз:
- ZK-502MT Bluetooth Ampкөтөргүч такта
- Top Plate with Control Labels
- Төмөнкү плита
- Screwdriver
- DC Power адаптер туташтыргычы
- Жылыткыч
- Mounting Hardware (Screws, Standoffs)
- Control Knobs (Volume, Treble, Bass)

Image 3.1: All components included in the ZK-502MT package.
4. Орнотуу колдонмосу
Follow these steps to properly set up your ZK-502MT Bluetooth Ampкөтөргүч такта.
4.1 Компоненттерди чогултуу
- Attach Heat Sink: Secure the provided heat sink to the main amplifier chip on the board. Ensure good contact for optimal heat dissipation.
- C чогултууasing: 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.
- Орнотуу баскычтары: 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 Динамиктин туташуусу
Динамиктерге туташтырыңыз 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.
The amplifier board is suitable for 20-200W, 4-8Ω speakers.

Image 4.2: Connection points for speakers, power, and AUX input.
4.3 Кубат туташтыруу
Connect a DC power supply (9V-24V) to the power input terminal. The board includes a DC power adapter connector for convenience.
- Сиздин энергия менен камсыз кылуу voltage is within the 9V to 24V DC range.
- Connect the power supply to the DC-IN port on the ampкуткаруучу такта.
- 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. Иштөө нускамалары
This section details how to operate your ZK-502MT ampкуткаруучу такта.
5.1 Күйгүзүү/өчүрүү
- 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
The amplifier board features three rotary knobs for audio adjustment:
- Көлөмү: Rotate the "VOLUME" knob clockwise to increase volume and counter-clockwise to decrease.
- Бас: Rotate the "BASS" knob clockwise to increase bass frequencies and counter-clockwise to decrease.
- Үч кабат: Rotate the "TREBLE" knob clockwise to increase treble frequencies and counter-clockwise to decrease.
5.3 Аудио киргизүү режимдери
The ZK-502MT supports two audio input modes: Bluetooth and AUX.

Сүрөт 5.1: The amplifier board supports both Bluetooth and AUX input modes.
5.3.1 Bluetooth режими
- камсыз кылуу amplifier board is powered on.
- The board will automatically enter Bluetooth pairing mode. A voice prompt or indicator light may confirm this.
- On your audio source device (e.g., smartphone, tablet, computer), enable Bluetooth and search for available devices.
- 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 киргизүү режими
- Connect a 3.5mm audio cable from your audio source device (e.g., MP3 player, TV, laptop) to the "AUX-IN" port on the ampкуткаруучу такта.
- The amplifier board will automatically switch to AUX input mode when a cable is detected.
- Begin playing audio from your source device.
6. Техникалык шарттар
| Өзгөчөлүк | Спецификация |
|---|---|
| Модель номери | ZK-502MT |
| Бренд | Daakro |
| Каналдардын саны | 2.0 (Стерео) |
| Чыгуу күчү | 50W + 50W (жалпысынан 100W) |
| Киргизүү көлөмүtage Диапазон | Туруктуу ток 9V - 24V |
| Динамик импедансы | 4-8Ω |
| Speaker Power Compatibility | 20 Вт - 200 Вт |
| Bluetooth версиясы | 5.0 |
| Аудио киргизүү | Bluetooth, AUX (3.5mm) |
| Өлчөмдөрү (L x W x Y) | 3.54 x 2.36 x 0.83 дюйм (9 x 6 x 2.1 см) |
| Элемент Салмагы | 4.2 унция (119 грамм) |

Image 6.1: Physical dimensions of the ZK-502MT ampкуткаруучу такта.

Image 6.2: Power Output Comparison Table for different input voltages and speaker impedances.
7. Кыйынчылыктарды
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Үн чыгышы жок |
|
|
| Bluetooth туташпай жатат |
|
|
| Үндүн бурмаланышы же сапаты начар |
|
|
| Amplifier board gets hot |
|
|
8. Техникалык тейлөө
To ensure the longevity and optimal performance of your ZK-502MT amplifier board, follow these simple maintenance guidelines:
- Тазалоо: 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.
- Чаңды тазалоо: Periodically use compressed air to remove dust from the heat sink and other components to maintain proper cooling.
- Сактагыч: сакталган болсо 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.
- Колдонуу: Always handle the board by its edges to avoid touching sensitive components or causing static discharge.
9. Кепилдик жана колдоо
Daakro is committed to providing high-quality products and excellent customer service.
- Кепилдик: Бул продукт менен келет 36 айлык кепилдик сатып алынган күндөн тартып өндүрүш кемчиликтерин жабуу. Кепилдик дооматтары үчүн сатып алганыңыздын далилин сактап коюңуз.
- Кардарларды тейлөө: For any questions, technical assistance, or warranty inquiries, please contact Daakro customer support.
- Онлайн колдоо: Visit the official Daakro Store on Amazon for more information and support resources: Daakro Amazon Store.

Image 9.1: Daakro After-Sales Support information.
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