SHIDU 20W Voice Amplifier User Manual

1. Introduction

This manual provides detailed instructions for the proper use and maintenance of your SHIDU 20W Voice Amplifier. Please read this manual thoroughly before operating the device to ensure optimal performance and longevity. The SHIDU voice amplifier is designed to provide clear and powerful sound amplification for various settings, including classrooms, meetings, outdoor activities, and public speaking.

2. Package Contents

Verify that all items listed below are included in your package:

• SHIDU Voice Amplifier Unit
• Wireless Headset Microphone
• Type-C Charging Cable
• Waistband/Lanyard
• User Manual

Figure 2.1: Standard Package Contents. This image displays all components typically found in the SHIDU 20W Voice Amplifier product box.

3. Product Overview

3.1. Main Amplifier Unit

Figure 3.1: SHIDU 20W Voice Amplifier. This image shows the main amplifier unit and the connected wireless headset microphone.

Figure 3.2: Amplifier Unit Controls and Ports. This diagram labels the various buttons, ports, and switches on the main amplifier unit.

• Power Switch/Volume Control: Slide switch to turn on/off and rotate to adjust volume.
• MIC Jack: 3.5mm input for wired microphone (if applicable) or external audio.
• TF Card Slot: Insert a TF (MicroSD) card for audio playback.
• USB Port: Insert a USB drive for audio playback.
• DC 5V Charging Port: Connect the Type-C charging cable here.
• Mode Button: Switches between Bluetooth, TF card, USB, and voice amplification modes.
• Playback Controls: Next, Play/Pause, Previous buttons for media playback.
• Recording Button: Initiates audio recording (requires TF card/USB drive).

3.2. Wireless Headset Microphone

Figure 3.3: Wireless Headset Microphone Controls. This diagram highlights the buttons and components of the wireless microphone.

• ON/OFF Switch: Powers the microphone on or off.
• Volume +/- Buttons: Adjusts the microphone input volume.
• Pairing Key: Used to initiate pairing with the main amplifier unit.
• Indicator Light: Shows power status, pairing status, and charging status.
• DC 5V Charging Port: Connects for charging the microphone.
• Detachable Head-mounted Rack: Allows for comfortable wearing.

4. Setup

4.1. Charging the Device

Before first use, fully charge both the voice amplifier unit and the wireless headset microphone.

1. Connect the provided Type-C charging cable to the DC 5V charging port on the voice amplifier unit.
2. Connect the other end of the cable to a USB power adapter (not included) or a computer USB port.
3. The charging indicator light on the amplifier will illuminate during charging and turn off when fully charged.
4. For the wireless microphone, connect its Type-C charging port to a USB power source. The indicator light will show charging status.

A full charge typically takes 3-5 hours for the amplifier and less for the microphone. The amplifier provides 6-8 hours of continuous use on a full charge.

Figure 4.1: Battery Information. This image highlights the battery capacity and typical usage/charging times.

4.2. Pairing the Wireless Microphone

The wireless microphone and amplifier are usually pre-paired. If re-pairing is needed:

1. Turn on both the voice amplifier unit and the wireless headset microphone.
2. Press and hold the Pairing Key on the wireless microphone until its indicator light flashes rapidly.
3. Ensure the amplifier is in voice amplification mode (not Bluetooth or media playback).
4. The devices should automatically connect. The microphone's indicator light will stop flashing and remain solid when paired successfully.

4.3. Wearing the Headset

Attach the microphone to the detachable head-mounted rack. Position the microphone approximately 1-2 inches from your mouth for optimal sound pickup. Adjust the headband for a comfortable and secure fit.

Figure 4.2: Wearing Options and Dimensions. This image illustrates how to wear the amplifier and microphone, and provides the unit's dimensions.

5. Operating Instructions

5.1. Power On/Off and Volume Control

1. To power on the amplifier, slide the Power Switch/Volume Control knob to the 'ON' position.
2. Rotate the knob clockwise to increase volume and counter-clockwise to decrease volume.
3. To power off, slide the knob to the 'OFF' position.
4. Ensure the wireless microphone is also powered on using its ON/OFF switch. Adjust its volume using the +/- buttons on the microphone unit.

5.2. Voice Amplification Mode

After powering on both the amplifier and the wireless microphone, the system will automatically enter voice amplification mode. Speak into the microphone, and your voice will be amplified through the speaker.

Figure 5.1: Plug and Play Operation. This image demonstrates the simplicity of connecting the microphone and adjusting volume for immediate use.

5.3. Bluetooth Mode

To use the amplifier as a Bluetooth speaker:

1. Turn on the amplifier.
2. Press the 'Mode' button until you hear an audible prompt indicating Bluetooth mode. The Bluetooth indicator light will flash.
3. On your smartphone or other Bluetooth-enabled device, search for 'SHIDU' in the Bluetooth settings and connect.
4. Once connected, the indicator light will stop flashing. You can now play audio from your device through the amplifier.
5. Use the amplifier's playback controls (Next, Play/Pause, Previous) or your connected device to manage audio.

Figure 5.2: Bluetooth Wireless Speaker Functionality. This image illustrates connecting a smartphone to the amplifier via Bluetooth for audio playback.

5.4. TF Card / USB Playback

To play audio files from a TF card or USB drive:

1. Insert a TF card into the TF Card Slot or a USB drive into the USB Port.
2. The amplifier will automatically detect the storage device and begin playing audio files. If not, press the 'Mode' button to cycle through modes until TF card or USB playback begins.
3. Use the playback controls (Next, Play/Pause, Previous) on the amplifier to navigate your audio files.

Figure 5.3: Multi-Playback Options. This image summarizes the various audio input methods supported by the amplifier.

5.5. Recording Function

The amplifier supports recording audio directly to a TF card or USB drive.

1. Ensure a TF card or USB drive is inserted into the amplifier.
2. Press the 'Recording' button to start recording.
3. Press the 'Recording' button again to stop and save the recording.

5.6. Important Usage Notes

• To prevent feedback, avoid placing the microphone directly in front of or too close to the voice amplifier unit. Maintain a reasonable distance.
• When using the wireless microphone, ensure it is fully charged for uninterrupted operation.
• The amplifier prioritizes one audio source at a time. For example, if Bluetooth is active, the microphone audio may be muted.

Figure 5.4: Microphone Placement Guidance. This image visually explains how to avoid audio feedback by correctly positioning the microphone relative to the amplifier.

6. Features and Applications

6.1. Clear and Powerful Sound

The SHIDU 20W Voice Amplifier delivers 20W of clear audio output, suitable for addressing groups of 50+ people. It incorporates AI intelligent noise reduction technology to minimize background noise and enhance vocal clarity.

Figure 6.1: AI Intelligent Noise Reduction. This image highlights the internal technology for clear sound output.

Figure 6.2: 20W High-Power Output. This image visually represents the amplifier's capability to produce strong audio despite its compact form factor.

6.2. Extended Battery Life

Equipped with an 1800mAh rechargeable battery, the amplifier provides 6-8 hours of continuous operation, making it suitable for extended use during teaching sessions, tours, or presentations.

Figure 6.3: High Capacity Battery. This image details the battery specifications and performance.

6.3. Portable Design

Weighing approximately 0.47 kg (1.04 lbs), the compact design allows for easy transport and comfortable wearing options, including waist, shoulder, or neck hanging.

6.4. Versatile Applications

The SHIDU voice amplifier is suitable for a variety of environments and uses:

• Classrooms: For teachers to project their voice clearly to students.
• Meetings/Speeches: Ensures all participants can hear the speaker.
• Outdoor Activities: Ideal for tour guides, coaches, or group leaders.
• Yoga/Fitness Classes: Provides clear instructions to participants.

Figure 6.4: Active in Various Scenarios. This image demonstrates the amplifier's utility across different professional and recreational settings.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the surface of the amplifier and microphone. Do not use liquid cleaners or abrasive materials.
• 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 device frequently. Charge it regularly, even if not in use for extended periods.

8. Troubleshooting

9. Specifications

10. Warranty and Support

The SHIDU 20W Voice Amplifier comes with a 24-month warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product functions as intended under normal use.

For technical assistance, troubleshooting, or warranty claims, please contact SHIDU customer support. Refer to the contact information provided on the product packaging or the official SHIDU website for the most up-to-date support details.