Introduction
Thank you for purchasing the Norwii Portable Voice Amplifier S358. This device is designed to amplify your voice clearly and powerfully, making it ideal for various applications such as teaching, training, public speaking, and guiding. It features a 10W output, a long-lasting 4000mAh built-in battery, and a wired headset microphone for convenient, hands-free operation.
This manual provides detailed instructions on how to set up, operate, maintain, and troubleshoot your voice amplifier. Please read it carefully before use and keep it for future reference.
Package Contents
Please check the package for the following items:
- 1 x Norwii Portable Voice Amplifier Unit
- 1 x Wired Headset Microphone
- 1 x USB-C Charging Cable
- 1 x 3.5mm AUX Audio Cable
- 1 x Adjustable Belt
Image: The Norwii Portable Voice Amplifier S358 and its accessories, including the main unit, wired headset microphone, USB-C charging cable, AUX audio cable, and adjustable belt.
Product Overview
Familiarize yourself with the components and controls of your Norwii S358 amplifier.
Image: A detailed view of the Norwii S358 amplifier, highlighting the microphone input, auxiliary input, LED indicator, and the combined power switch and volume adjustment knob. The USB-C charging port is also visible on the side.
- Microphone Input (MIC): Connect the wired headset microphone here.
- Auxiliary Input (AUX): Connect external audio sources like smartphones or PCs.
- LED Indicator: Shows power status and charging status.
- Power Switch/Volume Knob: Turn clockwise to power on and increase volume; turn counter-clockwise to decrease volume and power off.
- USB-C Charging Port: For charging the internal battery.
- Belt Clip: For attaching the amplifier to your belt or clothing.
Setup
Follow these steps to set up your voice amplifier for first use:
- Charge the Device: Before initial use, fully charge the amplifier. Refer to the "Charging" section for details.
- Connect the Microphone: Insert the 3.5mm plug of the wired headset microphone into the MIC input port on the amplifier. Ensure it is securely connected.
- Position the Microphone: Adjust the headset microphone so that the microphone head is positioned approximately 2-3 cm from your mouth for optimal sound pickup.
- Wear the Amplifier: Use the adjustable belt or the built-in belt clip to wear the amplifier comfortably. It can be worn around the waist, over the shoulder, or clipped to clothing.
Image: A teacher demonstrating various ways to wear the Norwii S358 portable voice amplifier, including around the waist with the belt clip and over the shoulder with the lanyard, while using the wired headset microphone.
Operating Instructions
Operating the Norwii S358 is straightforward:
- Power On: Turn the Power Switch/Volume Knob clockwise until you hear a click and the LED indicator lights up.
- Adjust Volume: Continue turning the knob clockwise to increase the volume. Turn counter-clockwise to decrease the volume. Adjust to a comfortable listening level for your audience.
- Speak Clearly: Speak into the headset microphone at a normal speaking volume. The amplifier will project your voice.
- Power Off: When finished, turn the Power Switch/Volume Knob counter-clockwise until you hear a click and the LED indicator turns off.
Using as an MP3 Player or Wired Speaker:
- Connect your smartphone, tablet, or PC to the AUX input port using the provided 3.5mm AUX audio cable.
- The amplifier will then function as an external speaker for your connected device.
Image: The Norwii S358 amplifier connected to a laptop, demonstrating its capability to function as an external speaker for playing audio content.
Charging
The Norwii S358 features a built-in lithium-ion battery that can be recharged via USB-C.
- Charging Process: Connect the USB-C charging cable to the amplifier's USB-C port and the other end to a USB power adapter (not included) or a computer's USB port.
- Charging Indicator: The LED indicator will show the charging status. It typically glows red while charging and turns off or changes color (depending on the model) when fully charged.
- Charging Time: For the 4000mAh battery, a full charge takes approximately 4-6 hours.
- Battery Life: A fully charged 4000mAh battery provides approximately 25-30 hours of continuous use.
Image: The Norwii S358 amplifier connected to a power source via a USB-C cable for charging. The image also illustrates the battery capacity options (2000mAh and 4000mAh) and their respective charging and usage times.
Feedback Prevention
To minimize audio feedback (howling) and ensure clear sound:
- Maintain Distance: Always keep the microphone at least 20 cm (8 inches) away from the amplifier unit.
- Microphone Position: Ensure the microphone is pointed away from the amplifier speaker.
- Volume Adjustment: If feedback occurs, slightly reduce the volume using the Power Switch/Volume Knob.
- Frequency Shift Technology: The Norwii S358 incorporates frequency shift technology to effectively suppress howling, providing stable and clear audio.
Image: A teacher demonstrating the correct usage of the Norwii S358 amplifier, emphasizing the importance of maintaining a distance of at least 20cm (8 inches) between the headset microphone and the amplifier unit to prevent audio feedback.
Maintenance
Proper care will extend the life of your Norwii S358 amplifier:
- Cleaning: Wipe the amplifier and microphone with a soft, dry cloth. 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: For optimal battery life, avoid fully discharging the battery frequently. Recharge it regularly, even if not in use for extended periods.
- Avoid Moisture: Do not expose the amplifier to water or high humidity.
Troubleshooting
If you encounter issues with your Norwii S358, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from amplifier | 1. Amplifier is off. 2. Volume is too low. 3. Microphone not connected properly. 4. Microphone faulty. | 1. Turn on the amplifier. 2. Increase the volume. 3. Ensure microphone plug is fully inserted into the MIC port. 4. Try another microphone if available. |
| Sound is distorted or unclear | 1. Volume too high. 2. Microphone too close to mouth. 3. Low battery. | 1. Reduce the volume. 2. Adjust microphone position (2-3 cm from mouth). 3. Recharge the amplifier. |
| Howling/Feedback sound | 1. Microphone too close to amplifier. 2. Volume too high. | 1. Increase distance between microphone and amplifier (at least 20 cm). 2. Reduce the volume. |
| Amplifier not charging | 1. USB-C cable not connected properly. 2. Power adapter faulty. 3. Charging port dirty. | 1. Reconnect the USB-C cable firmly. 2. Try a different USB power adapter or port. 3. Gently clean the charging port. |
If the problem persists after trying these solutions, please contact Norwii customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | Norwii |
| Model | S358 |
| Output Power | 10 Watts |
| Speaker Size | 3-inch |
| Battery Type | Lithium-Ion Battery |
| Battery Capacity | 4000mAh |
| Charging Time (4000mAh) | Approx. 4-6 hours |
| Continuous Use Time (4000mAh) | Approx. 25-30 hours |
| Audio Input | 3.5mm AUX |
| Microphone Type | Wired Headset Microphone |
| Dimensions (W x H x D) | 91.5mm x 101.5mm x 32.5mm |
| Weight | Approx. 0.45 lbs (204g) |
| Mounting Type | Portable (Belt Clip, Lanyard) |
Safety Information
- Do not disassemble or modify the device.
- Keep away from water, fire, and high temperatures.
- Do not expose to direct sunlight for prolonged periods.
- Use only the provided or recommended charging cables.
- Keep out of reach of children.
Warranty and Support
Norwii products come with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included in your package or visit the official Norwii website.
If you require technical support, have questions about your product, or need to claim warranty service, please contact Norwii customer support through the retailer where you purchased the product or via the contact information provided on the official Norwii website.
