1. Introduction
Thank you for choosing the COHYAN K18 Wireless Voice Amplifier. This portable and versatile device is designed to amplify your voice, making it ideal for various professional settings such as classrooms, meetings, yoga sessions, training, and tour guiding. Its compact design, powerful output, and advanced connectivity features ensure clear and effective communication while protecting your voice from strain.
This manual provides detailed instructions on how to set up, operate, and maintain your voice amplifier to ensure optimal performance and longevity.
2. Product Features
- Powerful Sound Output: Delivers 10W of clear audio, covering areas up to 10,000 sq-ft, suitable for classrooms of up to 180 people.
- Extended Battery Life: Equipped with an 1800mAh battery, providing 8-10 hours of continuous use on a single charge.
- Smart Battery Indicator: Features a built-in LED screen for real-time battery level monitoring.
- Compact & Lightweight Design: Measures 3.14 x 1.65 x 4.25 inches and weighs only 0.24lb, ensuring ultra-portability and comfort during extended use.
- Advanced Connectivity: Supports Bluetooth 5.0 for seamless wireless connections and includes a TF card slot for versatile audio playback.
- Versatile Wearing Options: Designed with a sleek pearl chain, allowing for head-mounted, neck-hanging, belt clip, waist-hanging, or shoulder-hanging configurations.
3. Package Contents
Please check the box for the following items:
- COHYAN K18 Wireless Voice Amplifier Unit
- Wireless Headset Microphone
- Type-C Charging Cable
- Pearl Chain Lanyard
- Waist Belt Clip
- User Manual
4. Setup Guide
4.1 Charging the Amplifier
Before first use, fully charge the amplifier. The LED screen will indicate the battery level.
- Connect the provided Type-C charging cable to the charging port on the amplifier.
- Connect the other end of the cable to a standard USB power adapter (not included) or a computer USB port.
- The LED display will show charging progress. A full charge typically takes 2.5-3 hours.
4.2 Wearing the Amplifier
The COHYAN K18 offers multiple ways to wear it for maximum comfort and convenience:
- Neck-hanging/Shoulder-hanging: Use the pearl chain lanyard to wear the amplifier around your neck or over your shoulder.
- Waist-hanging: Attach the waist belt clip to the amplifier and secure it to your belt or waistband.
- Back Clip: Utilize the integrated back clip to attach the amplifier directly to clothing or a pocket.
4.3 Connecting the Wireless Microphone
The wireless microphone is pre-paired with the amplifier. Simply turn on both devices, and they should connect automatically.
- Turn on the voice amplifier.
- Turn on the wireless headset microphone.
- The microphone will automatically connect to the amplifier. If connection fails, refer to the troubleshooting section.
5. Operating Instructions
5.1 Power On/Off
- To power on, press and hold the power button until the LED screen illuminates.
- To power off, press and hold the power button again until the screen turns off.
5.2 Voice Amplification
Once the amplifier and microphone are connected, speak into the microphone. Your voice will be amplified through the speaker.
- Adjust the volume using the dedicated volume control buttons on the amplifier.
- For optimal performance and to avoid feedback, keep the microphone at a proper distance from the amplifier and ensure it is not directly facing the speaker.
5.3 Bluetooth Playback
Connect your smartphone or other Bluetooth-enabled device to the amplifier to play audio.
- Ensure the amplifier is powered on and in Bluetooth mode (indicated on the LED screen).
- On your device, search for Bluetooth devices and select "COHYAN K18" to pair.
- Once paired, you can play audio from your device through the amplifier.
5.4 TF Card Playback
The amplifier supports TF card playback for pre-recorded audio.
- Insert a TF card (up to 64GB, not included) with audio files into the TF card slot on the amplifier.
- The amplifier will automatically switch to TF card playback mode.
- Use the control buttons to play, pause, skip tracks, or adjust volume.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your COHYAN K18 Voice Amplifier.
- Cleaning: Use a soft, dry cloth to wipe the surface of the amplifier and microphone. 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 preserve battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Handling: Handle the device with care. Avoid dropping or subjecting it to strong impacts.
7. Troubleshooting
If you encounter issues with your COHYAN K18 Voice Amplifier, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from amplifier | Amplifier is off; Microphone is off; Low battery; Microphone not paired. | Ensure amplifier and microphone are powered on; Charge the amplifier; Re-pair microphone if necessary. |
| Sound distortion or feedback | Microphone too close to speaker; Volume too high; Environmental interference. | Increase distance between microphone and amplifier; Reduce volume; Adjust microphone position (do not point directly at speaker). |
| Bluetooth connection issues | Amplifier not in pairing mode; Device too far; Interference. | Ensure amplifier is in Bluetooth mode; Move device closer; Restart both devices. |
| Battery not charging | Cable faulty; Power source issue; Charging port damaged. | Try a different Type-C cable and power source; Contact customer support if issue persists. |
If the problem persists after trying these solutions, please contact COHYAN customer support for further assistance.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | Wireless Microphone (K18) |
| Brand | COHYAN |
| Output Power | 10W |
| Battery Capacity | 1800mAh |
| Usage Time | 8-10 hours |
| Charging Time | 2.5-3 hours |
| Bluetooth Version | 5.0 |
| TF Card Support | Up to 64GB |
| Item Weight | 0.24 lb (12 ounces) |
| Package Dimensions | 7.72 x 5.83 x 2.05 inches |
| Color | K18 (Pink) |
| Manufacturer | COHYAN |
9. Warranty and Support
COHYAN is committed to providing high-quality products and excellent customer service. Your K18 Wireless Voice Amplifier comes with the following:
- 30-Day Return & Refund Policy: Enjoy a hassle-free return and refund within 30 days of purchase if you are not satisfied.
- 36-Month Warranty: The device is covered by a 36-month (3-year) warranty against manufacturing defects.
- Lifetime Technical Support: COHYAN provides lifetime technical support for your product.
For any questions, technical assistance, or warranty claims, please contact COHYAN customer support through the retailer's platform or visit the official COHYAN website.