Walfront TB21
ZK-TB21 High Power Amplifier Board колдонуучусу
Model: ZK-TB21 | Brand: Walfront
Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your Walfront ZK-TB21 High Power Amplifier Board. Please read this manual thoroughly before using the product to ensure safe and optimal performance. Keep this manual for future reference.
Коопсуздук маалыматы
Электр шокунан, өрткө же аппараттын бузулушуна жол бербөө үчүн ар дайым төмөнкү коопсуздук чараларын сактаңыз.
- Электр камсыздоо: Use only the specified DC 12-24V/5A or higher power supply. Ensure the power supply is stable and provides sufficient current.
- Вентиляция: Эч кандай вентиляция тешиктерин жаап албаңыз. айланасында адекваттуу аба агымын камсыз кылуу amplifier board to prevent overheating.
- Нымдуулук: Do not expose the unit to rain, moisture, or excessive humidity. Avoid placing liquids near the ampөмүрлүү.
- Колдонуу: Handle the board with care to avoid damaging electronic components. Avoid touching exposed circuits when powered.
- Орнотуу: Ensure all connections are secure and correct before applying power. Incorrect wiring can cause damage.
- Оңдоо: Агрегатты өзүңүз оңдоого же өзгөртүүгө аракет кылбаңыз. Бардык тейлөөлөрдү квалификациялуу кызматкерлерге тапшырыңыз.
Продукт бүттүview
The ZK-TB21 is a 2.1 channel Bluetooth digital amplifier board designed for high-power audio applications. It features independent volume controls for subwoofer, left/right channels, and master volume, along with treble and bass adjustments.

Figure 1: ZK-TB21 Amplifier Board with its top and bottom control plates.
Негизги өзгөчөлүктөрү:
- Bluetooth 5.0 connectivity for wireless audio streaming.
- AUX input for wired audio sources.
- 2.1 channel output: two main channels (left/right) and one subwoofer channel.
- Independent volume, treble, and bass controls.
- Built-in protection mechanisms: overvoltage, undervolvoltage, overheating, DC detection, short circuit protection.
Компоненттин идентификациясы:

2-сүрөт: Детальдуу view of the ZK-TB21 Amplifier Board showing power input, audio input, channel outputs, and control knobs.
- Кубат киргизүү: DC 12-24V (5.5x2.1DC head and 2P terminal)
- Аудио киргизүү: AUX + Bluetooth
- Оң каналдын чыгышы: Speaker connection for right channel.
- Сол каналдын чыгышы: Speaker connection for left channel.
- Сабвуфердин чыгышы: Speaker connection for subwoofer.
- Subwoofer Freq: Adjusts subwoofer crossover frequency (20-200Hz).
- Сабвуфердин үнү: Controls subwoofer output level.
- Сол жана оң каналдын жогорку деңгээли: Adjusts high frequencies for main channels.
- Сол жана оң каналдын басуусу: Adjusts low frequencies for main channels.
- Негизги том: Overall volume control for all channels.

3-сүрөт: Ички view highlighting key components such as the low noise preamp, shield power inductor, and large capacity energy storage capacitor.
Техникалык шарттар
| Өзгөчөлүк | Description |
|---|---|
| Продукт модели | ZK-TB21 |
| Bluetooth версиясы | 5.0 (approx. 10 meters/32.8 feet without obstacles) |
| Киргизүү сезгичтиги | 500 мВ |
| Киргизүү ыкмасы | AUX + Bluetooth |
| Каналдардын саны | 2.1 канал |
| Күч Ampкөтөргүч чип | TPA3116D2 (with AM interference suppression function) |
| Адаптер кубаттуулугу | DC 12-24V/5A or more (higher voltage = higher output power) |
| Adapted Speakers | 20-100W, 4-8Ω |
| Чыгуу күчү | 50W*2 (Left/Right Channels) + 100W (Subwoofer) |
| Коргоо механизми | Overvoltage, Undervoltage, Overheating, DC Detection, Short Circuit Protection |
| Монтаж түрү | Surface Mount |
Жайгашуу
Follow these steps to set up your ZK-TB21 ampкөтөргүч такта:
- Компоненттерди даярдоо: бар экенине ынаныңыз amplifier board, a suitable DC 12-24V/5A or higher power supply, and your 2.1 channel speakers (two main speakers and one subwoofer).
- Динамиктерди туташтыруу:
- Connect your left main speaker to the "Left Channel" output terminals.
- Connect your right main speaker to the "Right Channel" output terminals.
- Connect your subwoofer to the "Subwoofer" output terminals.
- Ensure correct polarity (+ to + and - to -) for all speaker connections.

Сүрөт 4: Жакын пландан view of the speaker and power connection terminals.
- Аудио киргизүүнү туташтырыңыз:
- AUX киргизүү: If using a wired audio source (e.g., smartphone, PC), connect it to the AUX input jack using a 3.5mm audio cable.
- Bluetooth киргизүү: For wireless connection, proceed to the "Operating" section for Bluetooth pairing instructions.
- Кубат булагына туташтыруу: Connect your DC 12-24V power supply to the power input terminals (DC 12-24V) on the board. Ensure the power supply is off or unplugged before connecting.
- Алгачкы текшерүү: Double-check all connections before powering on the board. Ensure no wires are loose or short-circuiting.
Иштөө нускамалары
Бир жолу amplifier board is set up, you can begin operation.
Күйгүзүү/өчүрүү:
Connect the power supply to turn on the board. Disconnect the power supply to turn it off. Note: The Bluetooth connection may remain active even when the board is "off" if power is still supplied, requiring disconnection from the power source for full shutdown.
Bluetooth жупташууда:
- камсыз кылуу amplifier board is powered on.
- Bluetooth түзмөгүңүздө (мисалы, смартфон, планшет) Bluetooth иштетип, жеткиликтүү түзмөктөрдү издеңиз.
- Select "ZK-TB21" from the list of found devices to pair.
- Once paired, audio from your device will be streamed to the ampөмүрлүү.
Аудиону тууралоо:

Сүрөт 5: Жакын пландан view of the five control knobs for audio adjustment.
- Негизги том: Use the far-right knob to control the overall output volume.
- Сабвуфердин үнү: Adjust the dedicated subwoofer volume knob to set the bass level.
- Subwoofer Frequency (FREQ): Use this knob to set the crossover frequency for the subwoofer, typically between 20-200Hz.
- Treble (R&L Channel): Adjust the treble knob for the main left and right channels to control high frequencies.
- Bass (R&L Channel): Adjust the bass knob for the main left and right channels to control low frequencies.
Эскертүү: For optimal sound, start with all volume knobs at a low setting and gradually increase them. Avoid setting the master volume too high, especially if distortion occurs, as this can damage speakers or the ampөмүрлүү.
Техникалык тейлөө
Proper care and maintenance will extend the life of your ampкуткаруучу такта.
- Тазалоо: Disconnect power before cleaning. Use a soft, dry cloth to wipe the surface of the board. Do not use liquid cleaners or solvents.
- Чаң: Regularly remove dust from the heatsink and components using compressed air or a soft brush to ensure proper cooling.
- Курчап турган чөйрө: Store and operate the board in a clean, dry environment, away from direct sunlight, extreme temperatures, and corrosive substances.
- Байланыштары: Бардык зымдардын туташууларынын бекем жана дат баспагандыгын мезгил-мезгили менен текшерип туруңуз.
Проблемаларды чечүү
If you encounter issues with your ZK-TB21 ampкөтөргүч такта, төмөнкү жалпы көйгөйлөрдү жана чечимдерди караңыз:
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Үн чыгышы жок |
|
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| Бурмаланган үн |
|
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| Bluetooth байланышы көйгөйлөрү |
|
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| Ашыкча ысып кетүү |
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Кепилдик жана колдоо
Walfront products are designed for reliability and performance. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact Walfront customer support.
If you require technical assistance or have questions not covered in this manual, please contact Walfront customer service through their official channels or the retailer from whom you purchased the product.
Көбүрөөк маалымат алуу үчүн, киргиле Walfront Store on Amazon.
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