1. Introduction
The WOOPKER ZK-1002T is a high-performance 2.0 channel Bluetooth amplifier board designed for DIY audio enthusiasts. It delivers 100W+100W of power output, features independent treble and bass controls, and supports both Bluetooth 5.0 wireless and 3.5mm AUX wired audio inputs. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance and longevity of your amplifier board.
2. Product Features
- Multiple Connection Options: Supports Bluetooth 5.0 wireless connection for high transmission efficiency (up to 49 feet unobstructed) and 3.5mm AUX wired input for non-Bluetooth devices.
- Treble and Bass Adjustment: Equipped with independent knobs for precise treble and bass control, allowing sound customization to personal preferences or environmental acoustics.
- High Power Output: Utilizes dual TPA3116D2 Class-D amplifier chips to provide a robust 100W+100W output, ensuring clear and undistorted sound quality.
- Advanced Safety and Stability: Features built-in protection mechanisms including overheat protection, short-circuit protection, overvoltage protection, and undervoltage protection for reliable and safe operation.
3. Package Contents
Verify that all items are present in the package:
- ZK-1002T Bluetooth Amplifier Board (x1)
- Instruction Manual (x1)
- Screwdriver (x1)
- Knobs for Volume, Bass, Treble (x3)
- DC Power Socket (x1)
- Mounting Hardware (screws, standoffs)
4. Setup Instructions
Follow these steps to connect your ZK-1002T amplifier board to speakers and a power source:
- Identify Components: Familiarize yourself with the amplifier board's inputs and outputs. The board includes terminals for passive speakers (L/R), a DC 12-24V power input, a 3.5mm AUX input, and control knobs for Treble, Bass, and Volume.
- Connect Speakers: Use a screwdriver to loosen the terminal screws for the passive speakers. Insert the positive (+) and negative (-) wires from your left speaker into the corresponding L+ and L- terminals. Repeat for the right speaker using the R+ and R- terminals. Ensure a secure connection and tighten the screws.
- Connect Power: Insert the DC power adapter (12-24V) into the DC socket on the amplifier board. Then, plug the power adapter into a suitable power outlet.
- Install Knobs: Place the provided knobs onto the shafts for Volume, Bass, and Treble controls.
5. Operating Instructions
Once the amplifier board is set up, you can begin playing audio:
- Power On: Turn the Volume knob clockwise to power on the device. A blue indicator light will illuminate. The amplifier will automatically enter Bluetooth mode.
- Bluetooth Connection:
- On your audio source device (e.g., smartphone, tablet), enable Bluetooth.
- Search for available Bluetooth devices and select "ZK-1002T" to pair.
- Once paired, the amplifier will indicate a successful connection (e.g., a voice prompt).
- AUX Input: To use the 3.5mm AUX input, connect your audio source device directly to the AUX-IN port on the amplifier board using a 3.5mm audio cable. The amplifier will automatically switch to AUX mode when a cable is detected.
- Adjust Volume: Use the Volume knob to control the overall audio output level.
- Adjust Treble and Bass: Use the dedicated Treble and Bass knobs to fine-tune the high and low frequencies of your audio.
6. Power Output Comparison
The following table illustrates the typical power output of the ZK-1002T amplifier board based on input voltage and speaker impedance:
| Model | Power Supply: DC12-24V/5A Or Above | |
|---|---|---|
| DC Voltage | Output Power (Max) | |
| ZK-1002T | 12V | 10W+10W @ 8Ω |
| 20W+20W @ 4Ω | ||
| 21V | 25W+25W @ 8Ω | |
| 50W+50W @ 4Ω | ||
| 100W+100W @ 2Ω | ||
| 24V | 30W+30W @ 8Ω | |
| 70W+70W @ 4Ω | ||
Note: When the input voltage is 24V, the impedance of the speakers must be greater than 4 ohms. If the speaker impedance is equal to 4 ohms, it is recommended to use a 19V DC power supply.
7. Protection Mechanisms
The ZK-1002T amplifier board incorporates several safety features to protect the device and connected components:
- Overheat Protection: Automatically reduces power or shuts down if the board's temperature exceeds safe operating limits.
- Short-Circuit Protection: Prevents damage in case of a short circuit in the speaker outputs.
- Overvoltage Protection: Safeguards the circuit from damage due to excessive input voltage.
- Undervoltage Protection: Ensures stable operation by preventing the device from running on insufficient power, which could lead to performance issues or damage.
- DC Detection Protection: Monitors the DC power input for stability.
8. Specifications
| Specification | Value |
|---|---|
| Model Number | ZK-1002T |
| Brand | WOOPKER |
| Output Power | 100W + 100W (200 Watts total) |
| Number of Channels | 2.0 |
| Input Voltage (DC) | 12V - 24V |
| Bluetooth Version | 5.0 |
| Audio Inputs | Bluetooth, 3.5mm AUX |
| Amplifier Chip | Dual TPA3116D2 Class-D |
| Package Dimensions | 5.39 x 3.66 x 2.05 inches |
| Item Weight | 5.9 ounces |
| Mounting Type | Freestanding |
9. Troubleshooting
- No Power:
- Ensure the DC power adapter is correctly connected and plugged into a working outlet.
- Verify the power supply voltage is within the 12-24V DC range.
- Check if the Volume knob is turned clockwise to power on the device.
- No Sound:
- Confirm speakers are correctly wired to the amplifier board (positive to positive, negative to negative).
- Check the audio source device's volume level.
- If using Bluetooth, ensure the device is successfully paired with "ZK-1002T".
- If using AUX, ensure the 3.5mm cable is fully inserted into both the amplifier and the audio source.
- Adjust the Volume, Treble, and Bass knobs on the amplifier.
- Distorted Sound / Static:
- Reduce the volume on both the amplifier and the audio source.
- Ensure speaker wires are not frayed or touching, causing a short circuit.
- Check for proper grounding of the power supply and audio source.
- If using Bluetooth, move the audio source closer to the amplifier to avoid interference.
- Verify that the speaker impedance matches the recommended range for the input voltage (refer to the Power Output Comparison table).
- Bluetooth Disconnection:
- Ensure the audio source device is within the 49-foot unobstructed range.
- Check for potential interference from other wireless devices.
- Try unpairing and re-pairing the device.
10. Maintenance
- Cleaning: Use a soft, dry cloth to clean the amplifier board. Avoid using liquid cleaners or solvents.
- Storage: Store the amplifier board in a cool, dry place away from direct sunlight and extreme temperatures.
- Ventilation: Ensure adequate airflow around the amplifier board to prevent overheating, especially during extended use. Do not obstruct the heat sink.
11. Warranty and Support
WOOPKER provides customer support for product-related inquiries. For assistance, please refer to the contact information provided with your purchase or visit the official WOOPKER website. Keep your purchase receipt for warranty claims. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship under normal use.
