Product Overview
The HW HAOWORKS S278UHF is a professional portable voice amplifier designed to project your voice clearly and loudly. It features both wireless and wired headset microphone options, Bluetooth 5.0 connectivity, AUX input, TF/USB card support, and recording capabilities. Its compact and lightweight design makes it suitable for various applications, including teaching, presentations, training, and public speaking.
Image: The HW HAOWORKS S278UHF Portable Voice Amplifier unit shown with both wireless and wired headset microphones.
Package Contents
Verify that all items are present in your package:
- Voice Amplifier Unit
- Wireless Headset Microphone
- Wired Headset Microphone
- Adjustable Belt/Strap
- 2-in-1 USB Charging Cable
- AUX Cable
- 5V Charger (Power Adapter)
- User Manual (this document)
Image: A visual representation of all items included in the product package, including the amplifier, two microphones, cables, charger, and strap.
Setup Instructions
1. Charging the Device
Before initial use, fully charge the voice amplifier unit and the wireless headset microphone. Use the provided 2-in-1 USB cable and 5V charger.
- Connect the USB cable to the charging port on the amplifier and the wireless microphone.
- Plug the 5V charger into a power outlet.
- Charging time: Approximately 3-5 hours for a full charge.
- Battery life: Amplifier lasts 10-12 hours; Wireless headset lasts 3-5 hours.
Image: The voice amplifier unit displaying battery information, indicating a 2500mAh battery for 10-12 hours of use and a 550mAh battery for the wireless microphone for 3-5 hours of use.
2. Connecting the Wireless Headset Microphone
- Turn on the speaker: Slide the ON/OFF switch on the amplifier to the 'ON' position. The display will show the battery level.
- Switch to UHF mode: Short press the "M" key on the amplifier to cycle through modes until "UHF" is displayed.
- Activate pairing mode on amplifier: Long press the "M" key on the amplifier for approximately 3 seconds. The amplifier will announce "UHF waiting for connection".
- Turn on the headset microphone: Slide the ON/OFF switch on the wireless headset microphone. A blue indicator light will illuminate.
- Activate pairing mode on microphone: Long press the "WIFI" signal button on the wireless headset microphone for 3 seconds. The blue light will flash rapidly.
- Confirm connection: Once successfully paired, the amplifier will announce "UHF is connected" and the blue light on the microphone will stop flashing and remain solid.
Video: Demonstrates the step-by-step process of connecting the wireless headset microphone to the voice amplifier unit.
3. Connecting the Wired Headset Microphone
To use the wired headset microphone, simply plug its 3.5mm jack into the "MIC" input port on the voice amplifier unit. The amplifier will automatically switch to wired microphone mode.
Operating Instructions
1. Power On/Off and Volume Control
- Power On/Off: Use the ON/OFF switch/volume knob on the side of the amplifier unit.
- Volume Adjustment: Rotate the ON/OFF switch/volume knob to adjust the main speaker volume. For the wireless microphone, use the '+' and '-' buttons on the microphone unit for fine-tuning.
Image: Close-up of the voice amplifier's side panel, highlighting the AUX input, Mic input, DC 5V charging port, and the combined ON/OFF switch and volume control knob.
2. Mode Selection
Short press the "M" button on the amplifier unit to cycle through available modes: Bluetooth, UHF (Wireless Microphone), AUX, TF Card, and USB input.
3. Bluetooth Connectivity
In Bluetooth mode, the amplifier will announce "Bluetooth is waiting for connection". Enable Bluetooth on your device (e.g., smartphone, tablet) and select "S278UHF" from the list of available devices to pair. Once connected, you can play audio through the amplifier.
4. AUX Input
Connect an external audio source (e.g., MP3 player, computer) to the "AUX" port on the amplifier using the provided AUX cable. The amplifier will automatically switch to AUX mode.
5. TF Card / USB Input
Insert a TF (Micro SD) card or a USB flash drive into the respective slots on the amplifier. The device will automatically detect and play audio files from the storage device. Use the playback control buttons (previous, play/pause, next) on the amplifier to manage audio playback.
6. Recording Function
To record audio, ensure a TF card or USB flash drive is inserted. In microphone mode, press the record button (often indicated by a microphone icon or 'REC' on the control panel, if available, or a long press of the play/pause button in some models) to start recording. Press again to stop. Recorded files will be saved to the inserted storage device.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the amplifier and microphones. Avoid using 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.
- Handling: Handle the device and microphones with care to prevent physical damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from amplifier | Device is off; Volume is too low; Microphone not connected/paired; Low battery. | Turn on the device; Increase volume; Connect/pair microphone correctly; Charge the device. |
| Feedback/Screeching sound | Microphone too close to the speaker; Volume too high; Microphone pointing away from mouth. | Increase distance between microphone and speaker; Lower volume; Position microphone 2-3 cm from mouth, pointing towards it. |
| Wireless microphone not connecting | Not in UHF mode; Pairing process not followed correctly; Low battery. | Ensure amplifier is in UHF mode; Repeat pairing steps carefully; Charge microphone. |
| Audio playback issues (Bluetooth/AUX/TF/USB) | Incorrect mode selected; Device not paired (Bluetooth); Cable not fully inserted (AUX); Corrupt files (TF/USB). | Select correct mode; Re-pair Bluetooth; Check cable connection; Try different audio files or storage device. |
| Device not charging | Charging cable/adapter faulty; Port damaged. | Try a different charging cable/adapter; Contact customer support if ports appear damaged. |
Image: Guidelines for avoiding microphone feedback, including keeping the microphone away from the speaker, not turning the volume too high, and positioning the microphone correctly.
Specifications
| Feature | Detail |
|---|---|
| Model Number | S278UHF |
| Brand | HW HAOWORKS |
| Power Output | 15 Watts |
| Connectivity Technology | Bluetooth 5.0, AUX, USB |
| Wireless Microphone Type | UHF (Ultra High Frequency) |
| Amplifier Battery Life | 10-12 hours |
| Wireless Mic Battery Life | 3-5 hours |
| Dimensions (L x W x H) | 4.17 x 3.4 x 1.4 inches |
| Item Weight | 0.44 lbs |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Audio Input | Microphone, AUX, TF Card, USB |
| Manufacturer | SHIDU |
Warranty and Support
HW HAOWORKS provides lifetime technical support for their voice amplifiers. If you encounter any questions or issues, please feel free to contact their customer service for assistance. They are committed to providing a satisfactory solution within 24 hours.
