Introduction
Thank you for choosing the PEMENOL TWS Mono Bluetooth Power Amplifier Module. This module is designed for DIY audio projects, offering versatile audio input options including Bluetooth, AUX, USB drive, and USB sound card. It features a 100W mono output and supports TWS (True Wireless Stereo) functionality when two modules are paired. This manual provides essential information for safe installation, operation, and maintenance of your amplifier module.
Safety Instructions
- Ensure the power supply voltage is within the specified range of 7-24V DC. Exceeding this range can damage the module.
- Always disconnect power before making any connections or disconnections to prevent electric shock or damage.
- Avoid short-circuiting the output terminals.
- Do not expose the module to moisture, extreme temperatures, or corrosive environments.
- Handle the module with care to avoid damaging electronic components.
- Keep out of reach of children.
Product Overview
The PEMENOL Mono Bluetooth Power Amplifier Module integrates multiple features for a comprehensive audio solution.
Key Features:
- Mono 100W Output: Delivers powerful audio for a single speaker.
- Multiple Audio Inputs: Supports Bluetooth, AUX (3.5mm), USB drive, and USB sound card.
- TWS Functionality: Allows two modules to pair for true wireless stereo separation (left and right channels).
- Multifunction Knob: Controls volume, play/pause, next track, power ON/OFF, and TWS mode entry/exit.
- Status Indicators: Features a working indicator and a TWS indicator for clear operational status.
- Wide Voltage Range: Operates on 7-24V DC power supply.
Component Identification:
Image: Overview of the PEMENOL 100W Mono Bluetooth Amplifier Module, highlighting its support for AUX, Bluetooth, and USB inputs.
Image: Detailed view of the amplifier module's circuit board, indicating the USB disk support, operating indicator light, TWS indicator light, and the upgraded large chip supporting AAC Bluetooth decoding for low latency.
- Power Interface: DC 7-24V input.
- Speaker Output: Connects to a single speaker (supports 3-8Ω, 20-100W).
- AUX Audio Input: 3.5mm jack for external audio devices.
- USB/Sound Card Interface: For USB drive playback or connection as a USB sound card to a computer.
- Multifunction Knob: Controls various functions (see Operating Instructions).
- Operating Indicator Light: Indicates the module is powered on and functioning.
- TWS Indicator Light: Indicates TWS mode status.
Setup
Follow these steps to set up your PEMENOL amplifier module.
Image: Connection diagram for the amplifier module, illustrating where to connect the speaker, DC power (7-24V), USB/Sound card interface, and AUX audio input. A terminal converter for power is also shown.
- Connect Speaker: Connect your 3-8Ω, 20-100W speaker to the "Speaker" terminals (NI-BSO). Ensure correct polarity (+ to + and - to -).
- Connect Power: Connect a DC 7-24V power supply to the "DC 7-24V" power interface. Use a suitable power adapter or battery pack.
- Choose Audio Input:
- Bluetooth: The module will automatically enter Bluetooth pairing mode upon power-on.
- AUX: Connect an audio source (e.g., phone, TV) to the "AUX-IN" 3.5mm jack.
- USB Drive: Insert a USB flash drive containing MP3/WAV/WMA/FLAC/APE audio files into the USB interface.
- USB Sound Card: Connect the module to a computer via the USB interface to use it as an external sound card.
- Power On: Long press the multifunction knob to power on the module. The operating indicator light will illuminate.
Operating Instructions
The multifunction knob controls various aspects of the amplifier module's operation.
Image: Detailed explanation of the multifunction knob's controls, including single click for Play/Pause, double click for Next Song, triple click for TWS mode entry/exit, long press for Power ON/OFF, and rotating the knob to adjust volume.
- Power ON/OFF: Long press the knob to turn the module ON or OFF.
- Volume Adjustment: Rotate the knob clockwise to increase volume, counter-clockwise to decrease volume.
- Play/Pause: Single click the knob to play or pause audio playback.
- Next Track: Double click the knob to skip to the next song.
- Input Switching: The module automatically prioritizes inputs. Bluetooth is usually default. When AUX or USB is connected, it may switch automatically. For manual switching, disconnect the current source or use the source device controls.
- Bluetooth Pairing: When powered on, the module enters pairing mode. Search for "Wuzhi Audio" on your Bluetooth device and connect.
TWS (True Wireless Stereo) Mode
The TWS function allows you to pair two PEMENOL amplifier modules of the same model to create a stereo sound system, with one module acting as the left channel and the other as the right channel.
Image: Illustration of the TWS Box Matching Function, showing how two independent Bluetooth power amplifier modules can be connected via TWS to achieve left and right channel stereo sound. The image also notes to press the button three times to enter or exit TWS mode.
- Prepare Modules: Ensure both PEMENOL amplifier modules are powered on and not currently connected to any Bluetooth device.
- Enter TWS Mode: On one of the modules, quickly press the multifunction knob three times. The TWS indicator light will start flashing, indicating it's searching for another module.
- Pair Second Module: On the second module, quickly press the multifunction knob three times. Its TWS indicator light will also flash.
- Confirmation: The two modules will automatically search and pair with each other. Once successfully paired, the TWS indicator lights on both modules will remain solid, and one module will announce "Left Channel" and the other "Right Channel" (or similar).
- Connect Bluetooth: Now, connect your Bluetooth audio source (e.g., smartphone) to one of the paired modules (it will appear as a single Bluetooth device, typically "Wuzhi Audio").
- Exit TWS Mode: To exit TWS mode, quickly press the multifunction knob three times on either module.
Note: For optimal stereo separation, place the left and right channel speakers appropriately.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the module. Do not use liquid cleaners or solvents.
- Storage: Store the module in a cool, dry place away from direct sunlight and high humidity when not in use.
- Ventilation: Ensure adequate ventilation around the module during operation to prevent overheating.
- Connections: Periodically check all connections to ensure they are secure.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Module not turning on. | Incorrect power supply voltage or polarity; loose power connection; faulty power supply. | Verify power supply is 7-24V DC and connected correctly. Check power adapter functionality. Ensure long press of knob for power ON. |
| No sound output. | Incorrect speaker connection; volume too low; wrong input selected; faulty audio source/cable. | Check speaker wiring and impedance (3-8Ω). Increase volume. Ensure correct audio input is active. Test with a different audio source or cable. |
| Bluetooth not connecting. | Module not in pairing mode; device too far; interference; already connected to another device. | Ensure module is powered on and not in TWS mode. Keep device within range. Disconnect from other Bluetooth devices. Restart module and device. |
| Distorted sound. | Volume too high (clipping); speaker impedance mismatch; poor audio source quality; power supply issues. | Reduce volume. Ensure speaker impedance is 3-8Ω. Use a high-quality audio source. Check power supply stability. |
| TWS pairing fails. | Modules not in TWS pairing mode; modules too far apart; already connected to Bluetooth. | Ensure both modules are powered on and not connected to any Bluetooth device. Triple click the knob on both modules to initiate TWS pairing. Keep modules close during pairing. |
Specifications
| Parameter | Value |
|---|---|
| Brand | PEMENOL |
| Model Number | GY20961-2 |
| Input Voltage | DC 7-24V |
| Output Power | 100W (Mono) |
| Speaker Impedance | 3-8Ω (Recommended 20-100W speaker) |
| Audio Inputs | Bluetooth, AUX (3.5mm), USB Drive, USB Sound Card |
| Bluetooth Version | Supports AAC decoding (low latency) |
| USB Disk Support | MP3/WAV/WMA/FLAC/APE |
| Dimensions (L x W x H) | 40 x 20 x 20 mm (4 x 2 x 2 cm) |
| Weight | 91 grams |
Warranty and Support
Information regarding specific warranty terms and customer support for the PEMENOL TWS Mono Bluetooth Power Amplifier Module is not available in the provided product details. Please refer to the retailer or manufacturer's official website for the most up-to-date warranty information and support contacts.
