1. Introduction
Thank you for choosing the SHIDU Voice Amplifier Model 2023-308. This portable PA system is designed to amplify your voice clearly, making it ideal for teachers, tour guides, trainers, and public speakers. It supports various audio playback options including Bluetooth, TF card, and U-Disk. Please read this manual carefully to ensure proper use and optimal performance of your device.
2. Package Contents
Please check the package for the following items:
- SHIDU Voice Amplifier Unit
- Wired Microphone Headset
- USB Charging Cable
- Adjustable Waist/Shoulder Strap
3. Product Overview
The SHIDU 2023-308 Voice Amplifier is a compact and lightweight device designed for clear voice amplification and versatile audio playback.
Figure 1: SHIDU Voice Amplifier Model 2023-308 with wired microphone headset.
Key Features:
- Clear Voice Amplification: Projects voice clearly to audiences of up to 120 people.
- Lightweight and Portable: Weighs approximately 0.3 pounds (10.5 ounces) for easy transport.
- Multi-functional Playback: Supports Bluetooth, TF card, and U-Disk for music playback.
- Long Battery Life: Built-in rechargeable battery provides up to 7.5 hours of amplification.
- Durable Construction: Made from Acrylonitrile Butadiene Styrene (ABS).
Figure 2: Illustration of the voice amplifier's coverage area and audience capacity.
4. Component Identification
Figure 3: Front and side views of the amplifier with labeled ports and buttons.
- A-B / Repeat Key: Used for repeating sections in audio playback.
- Previous Track Button: Navigates to the previous audio track.
- Power On/Off & Play/Pause Button: Controls power and audio playback.
- Next Track Button: Navigates to the next audio track.
- Mode Button (M): Switches between Bluetooth, TF Card, U-Disk, and AUX modes.
- Indicator Light: Displays device status (e.g., charging, power on, Bluetooth pairing).
- TF Card Slot: Insert a TF (Micro SD) card for audio playback.
- USB Slot: Insert a U-Disk (USB flash drive) for audio playback.
- Mic Slot: Connect the wired microphone headset.
- DC 5V Charging Port: Connect the USB charging cable.
- Volume Control: Rotary knob for adjusting amplification volume.
- Back Clip: For attaching the amplifier to a belt or pocket.
5. Setup Instructions
5.1. Charging the Device
- Connect the small end of the USB charging cable to the DC 5V Charging Port on the amplifier.
- Connect the other end of the USB cable to a standard USB power adapter (not included) or a computer's USB port.
- The indicator light will illuminate during charging. It typically takes 2-4 hours for a full charge.
- A full charge provides approximately 7.5 hours of amplification time.
Figure 4: Battery capacity, amplifying time, and charging time information.
5.2. Connecting the Microphone
- Insert the 3.5mm jack of the wired microphone headset into the Mic Slot on the amplifier.
- Position the microphone headset comfortably on your head, ensuring the microphone is close to your mouth for optimal voice pickup.
5.3. Wearing the Amplifier
The amplifier can be carried in multiple ways:
- Back Clip: Attach the amplifier to your belt or pocket using the integrated back clip.
- Waist Strap: Use the adjustable strap to wear the amplifier around your waist.
- Shoulder/Neck Strap: Use the adjustable strap to hang the amplifier over your shoulder or neck.
Figure 5: Demonstrates various carrying options for the voice amplifier.
6. Operating Instructions
6.1. Power On/Off
- To Power On: Press and hold the Power On/Off & Play/Pause button for a few seconds until the indicator light illuminates.
- To Power Off: Press and hold the Power On/Off & Play/Pause button again for a few seconds until the indicator light turns off.
6.2. Voice Amplification
- Ensure the microphone headset is securely connected to the Mic Slot.
- Power on the amplifier.
- Slowly rotate the Volume Control knob to increase the volume to your desired level.
- Speak clearly into the microphone.
- Note: To avoid feedback, keep the microphone away from the speaker and avoid pointing the microphone directly at the speaker.
6.3. Bluetooth Mode
- Power on the amplifier.
- Press the Mode (M) button until you hear a voice prompt indicating "Bluetooth Mode" or see the indicator light flashing blue.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for "SHIDU" or "2023-308".
- Select the amplifier from the list to pair. Once paired, you will hear a confirmation sound, and the indicator light will turn solid blue.
- You can now play audio from your device through the amplifier. Use the Previous Track, Play/Pause, and Next Track buttons to control playback.
Figure 6: Seamless Bluetooth connectivity with various devices.
6.4. TF Card / U-Disk Playback
- Power on the amplifier.
- Insert a TF (Micro SD) card into the TF Card Slot or a U-Disk into the USB Slot.
- The amplifier will automatically detect the storage device and begin playing audio files. If not, press the Mode (M) button to switch to the correct mode.
- Use the Previous Track, Play/Pause, and Next Track buttons to control playback.
- Press the A-B / Repeat Key to repeat the current track or a specific section.
7. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, charge the device regularly, even if not in frequent use. Avoid fully discharging the battery for extended periods.
- Microphone Care: Handle the wired microphone headset gently. Avoid bending the cable sharply or exposing it to excessive moisture.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from amplifier. | Device is off; volume is too low; microphone not connected properly; battery is low. | Ensure device is powered on. Increase volume. Check microphone connection. Charge the battery. |
| Feedback (squealing sound). | Microphone too close to speaker; volume too high; microphone pointed at speaker. | Move microphone further from speaker. Reduce volume. Adjust microphone position. |
| Bluetooth connection issues. | Amplifier not in Bluetooth mode; device not discoverable; interference. | Press 'M' button to enter Bluetooth mode. Ensure Bluetooth is enabled on your device. Move closer to the amplifier. Try re-pairing. |
| TF card/U-Disk not playing. | Incorrect file format; card/disk not inserted correctly; amplifier in wrong mode. | Ensure audio files are in a compatible format (e.g., MP3). Reinsert card/disk. Press 'M' button to switch to TF/USB mode. |
| Short battery life. | Not fully charged; aging battery. | Ensure full charge (2-4 hours). If battery life significantly degrades over time, contact support. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | 2023-308 |
| Brand | SHIDU |
| Mounting Type | Portable |
| Power Source | Battery Powered |
| Connector Type | Aux, USB |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Item Weight | 0.3 Kilograms (10.5 ounces) |
| Number of Channels | 1 |
| Audio Input | Microphone |
| Product Dimensions (L x W x H) | 1 x 12 x 4.3 inches |
| Connectivity Technology | AUX, Bluetooth, USB |
| Color | Black |
| Compatible Devices | Headset, Smartphone |
| Battery Capacity | 1500mAh |
| Amplifying Time | Up to 7.5 Hours |
| Charging Time | 2-4 Hours |
10. Warranty and Support
SHIDU is committed to providing high-quality products. For any questions or issues regarding your SHIDU Voice Amplifier Model 2023-308, please contact SHIDU customer support. Refer to your purchase documentation for specific warranty details.
You can often find support information on the official SHIDU website or through the retailer where you purchased the product.
