1. Introduction
Thank you for choosing the Shidu S93UHF Portable Voice Amplifier. This device is designed to provide clear and powerful voice amplification for various applications such as teaching, tour guiding, sales promotion, and public speaking. It features UHF wireless microphone technology, Bluetooth 5.0 connectivity, and multiple playback options. Please read this manual carefully to ensure proper use and maintenance of your device.
Figure 1: Shidu S93UHF Portable Voice Amplifier
2. Package Contents
Please check the box for the following items:
- 1 x Shidu S93UHF Voice Amplifier
- 1 x Headset Wireless Microphone
- 1 x Audio Cable
- 1 x Belt/Strap
- 1 x Micro-USB Charging Cable
- 1 x Type-C Charging Cable
Figure 2: Product Packaging and Contents
3. Product Overview
3.1 Control Panel
Figure 3: Top Control Panel
- Echo Volume Knob: Adjusts the echo effect level.
- Recording Button: Initiates recording.
- Previous Button: Skips to the previous track or station.
- Play/Pause Button: Plays or pauses audio playback.
- Mode Button: Switches between different modes (e.g., Bluetooth, FM, USB, TF card, AUX).
- Next Button: Skips to the next track or station.
- Switch/Volume Knob: Power on/off and adjusts the main volume.
3.2 Side Ports
Figure 4: Side Ports
- TF Card Socket: For inserting a TF (MicroSD) card for audio playback.
- USB Socket: For inserting a USB flash drive for audio playback.
- Charging Port: Connect the charging cable here.
- AUX Port: For connecting external audio devices via the audio cable.
- MIC Port: For connecting the wired microphone or headset.
4. Specifications
| Feature | Specification |
|---|---|
| Output Power | 20W |
| Speaker | 3.2 inch Hi-Fi double magnetic full-range speaker |
| Battery Type | 3.7V / 4.2V 2500mAh Lithium battery |
| Charging Voltage | DC 5V, 2A |
| Charging Time | 3-5 hours |
| Working Time | 6-8 hours (depending on usage) |
| Frequency Response | 90Hz~18KHz |
| Distortion | 5% |
| Signal-to-Noise Ratio (SNR) | 85dB |
| Wireless Technology | UHF (Ultra High Frequency) |
| Wireless Distance | 30-35m |
| Bluetooth Version | Bluetooth 5.0 EDR |
| Supported Music Formats | MP3, WMA, WAV, APE, FLAC |
| Unit Weight | 424g |
| Working Temperature | -10℃~45℃ |
| Dimensions (approx.) | 102.5mm (W) x 120mm (H) |
Figure 5: Product Dimensions
5. Setup Guide
5.1 Charging the Amplifier
- Connect the provided Micro-USB or Type-C charging cable to the Charging Port on the side of the amplifier (refer to Figure 4).
- Connect the other end of the cable to a DC 5V, 2A power adapter (not included) or a USB port on a computer.
- The charging indicator light will illuminate. Once fully charged (approximately 3-5 hours), the indicator light may change color or turn off.
Note: Ensure the amplifier is fully charged before first use for optimal battery life.
Figure 6: Battery Information
5.2 Connecting the Wireless Headset Microphone
- Turn on the voice amplifier by rotating the Switch/Volume knob clockwise.
- Turn on the wireless headset microphone.
- The amplifier and microphone should automatically pair via UHF wireless technology. If not, refer to the troubleshooting section for manual pairing instructions.
- Insert the microphone's 3.5mm jack into the MIC Port on the side of the amplifier (refer to Figure 4).
- Position the headset microphone comfortably near your mouth for optimal voice pickup.
6. Operating Instructions
6.1 Voice Amplification
- Ensure the headset microphone is connected and both the amplifier and microphone are powered on.
- Speak into the microphone. Your voice will be amplified through the speaker.
- Adjust the main volume using the Switch/Volume knob.
- Adjust the Echo Volume knob for desired echo effect.
6.2 Bluetooth Mode
- Press the 'Mode' button until the amplifier enters Bluetooth mode (a voice prompt or indicator light may confirm this).
- On your mobile device, enable Bluetooth and search for available devices.
- Select "SHIDU S93UHF" (or similar) from the list to pair.
- Once paired, you can play audio from your device through the amplifier.
- Use the Previous/Next buttons on the amplifier to control tracks, and Play/Pause for playback control.
Figure 7: Bluetooth Connectivity
6.3 USB/TF Card Playback
- Insert a USB flash drive into the USB Socket or a TF (MicroSD) card into the TF Card Socket (refer to Figure 4).
- The amplifier will automatically detect the storage device and begin playing audio files. If not, press the 'Mode' button to switch to USB or TF card mode.
- Use the Previous/Next buttons to navigate tracks and Play/Pause for playback control.
6.4 AUX Input
- Connect one end of the provided audio cable to the AUX Port on the amplifier (refer to Figure 4).
- Connect the other end of the audio cable to the audio output jack of an external device (e.g., smartphone, computer, laptop).
- Press the 'Mode' button to switch to AUX mode.
- Play audio from your external device. The amplifier will act as an external speaker.
6.5 Recording Function
- Ensure a USB flash drive or TF card is inserted into the amplifier.
- Press the 'Recording' button (refer to Figure 3) to start recording.
- Press the 'Recording' button again to stop recording.
- Recorded files will be saved to the inserted storage device.
6.6 FM Radio
- Press the 'Mode' button to switch to FM radio mode.
- The amplifier will automatically scan and save available FM stations.
- Use the Previous/Next buttons to switch between saved stations.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the surface of the amplifier. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods (e.g., once every 3 months).
- Avoid Water: This device is not waterproof. Keep it away from water and moisture.
- Handle with Care: Avoid dropping or subjecting the device to strong impacts.
8. Troubleshooting
| Problem | Possible Solution |
|---|---|
| No sound from amplifier |
|
| Microphone not working |
|
| Bluetooth pairing failed |
|
| USB/TF card not playing |
|
| Distortion or poor sound quality |
|
9. User Tips
- Optimal Microphone Placement: For the clearest sound and to minimize feedback, position the headset microphone about 1-2 inches from your mouth.
- Battery Management: For long-term use, it's good practice to partially charge the device (to around 50-70%) if storing it for several weeks or months.
- Versatile Use: Don't limit its use to just voice amplification. Utilize its Bluetooth and AUX input features to play music or audio from other devices, effectively turning it into a portable speaker.
- Recording Lectures/Meetings: The recording function is excellent for capturing important lectures, meetings, or practice sessions. Remember to have a TF card or USB drive inserted.
- Portability: Use the included belt/strap to wear the amplifier for hands-free operation, especially useful for tour guides or during outdoor activities.
10. Warranty and Support
The Shidu S93UHF Portable Voice Amplifier comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use.
The warranty does not cover:
- Damage caused by misuse, abuse, accident, or neglect.
- Damage from unauthorized repairs or modifications.
- Normal wear and tear.
- Damage caused by liquids or extreme temperatures.
For warranty claims, technical support, or any questions regarding your product, please contact the seller or manufacturer directly with your purchase details.
