1. Introduction
Thank you for purchasing the VONYX MEG075 Megaphone. This powerful 75W megaphone is designed for clear and effective voice projection over long distances, making it ideal for events, sports, public speaking, and emergency situations. It features Bluetooth connectivity, an integrated MP3 player, and comes with rechargeable batteries and a convenient transport bag for enhanced portability and extended use. Please read this manual thoroughly before operating the device to ensure safe and optimal performance.
2. Package Contents
Please check the contents of your package to ensure all items are present and in good condition:
- 1x VONYX MEG075 Megaphone
- 2x VONYX MRB12 Rechargeable Batteries
- 1x Transport Bag
- 1x User Manual (this document)

Image 2.1: Complete VONYX MEG075 package contents.

Image 2.2: Breakdown of package components.
3. Safety Instructions
To ensure safe operation and prevent damage, please observe the following safety precautions:
- Do not expose the megaphone to rain, moisture, or extreme temperatures.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble or modify the megaphone. Repairs should only be performed by qualified personnel.
- Keep the megaphone away from direct sunlight and heat sources.
- When using the megaphone, avoid pointing it directly at people's ears at close range, as the high volume can cause hearing damage.
- Ensure proper ventilation when charging batteries.
- Use only the specified VONYX MRB12 rechargeable batteries. Do not mix old and new batteries or different types of batteries.
- Dispose of batteries responsibly according to local regulations.
4. Setup
4.1. Battery Installation and Charging
The VONYX MEG075 uses MRB12 rechargeable Li-ion batteries. Before first use, ensure the batteries are fully charged.
- Locate the battery compartment at the rear of the megaphone.
- Open the battery compartment cover.
- Insert the MRB12 batteries, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely.
- To charge the batteries, connect a compatible USB charger (not included) to the charging port on the battery. The LED indicator on the battery will show charging status.

Image 4.1: Megaphone battery compartment.

Image 4.2: VONYX MRB12 rechargeable battery.
4.2. Attaching the Shoulder Strap
The megaphone comes with a shoulder strap for comfortable carrying during extended use.
- Locate the strap attachment points on the megaphone body.
- Securely attach each end of the shoulder strap to these points.

Image 4.3: Transport bag, also showing strap attachment points.
5. Operating Instructions
5.1. Power On/Off and Volume Control
The main power switch is located on the handle or control panel. Turn it to the 'ON' position to power on the megaphone. Use the volume control knob or buttons to adjust the output level.
5.2. Microphone Usage (Talk Function)
The MEG075 features a detachable hand microphone for clear voice projection.
- Ensure the microphone cable is securely plugged into the megaphone's input jack.
- Press and hold the 'TALK' button on the microphone to speak. Release the button when finished speaking.
- Speak clearly and directly into the microphone for best results.

Image 5.1: Megaphone with attached microphone.
5.3. Siren Function
The megaphone is equipped with a siren function for emergency or attention-grabbing purposes. Press the 'SIREN' button on the control panel to activate the siren. Press it again to deactivate.
6. Bluetooth Connectivity
The MEG075 allows you to stream audio wirelessly via Bluetooth from your smartphone or other compatible devices.
- Turn on the megaphone.
- Press the 'MODE' button (if available) or switch to Bluetooth mode. The megaphone will enter pairing mode, indicated by a flashing LED or an audible prompt.
- On your Bluetooth device, enable Bluetooth and search for available devices.
- Select 'VONYX MEG075' (or similar name) from the list of devices.
- Once paired, you will hear a confirmation sound, and the LED indicator will become solid. You can now play audio from your device through the megaphone.
7. MP3 Player Functionality
The megaphone features an integrated MP3 player that supports playback from USB drives and SD cards.
- Insert a USB drive into the USB port or an SD card into the SD card slot on the megaphone's control panel.
- The megaphone should automatically switch to MP3 playback mode. If not, press the 'MODE' button to select MP3.
- Use the playback controls (Play/Pause, Next/Previous Track) on the megaphone or microphone to manage your audio.

Image 7.1: Battery with USB port (for charging or potentially for USB playback if the megaphone uses the battery's port for this, though typically it's on the megaphone itself).
8. Maintenance and Care
Proper care will extend the life of your VONYX MEG075 Megaphone:
- Clean the megaphone with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Store the megaphone in its transport bag when not in use to protect it from dust and physical damage.
- If storing for a long period, remove the batteries to prevent leakage.
9. Troubleshooting
If you encounter issues with your megaphone, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Megaphone not powered on; Low battery; Volume too low; Microphone not connected or faulty. | Ensure power is ON; Charge or replace batteries; Increase volume; Check microphone connection. |
| Low volume or distorted sound | Low battery; Volume set too low; Obstruction in horn; Microphone too far from mouth. | Charge batteries; Increase volume; Clear any obstructions; Speak closer to microphone. |
| Bluetooth not connecting | Megaphone not in pairing mode; Device too far; Bluetooth off on source device. | Ensure megaphone is in Bluetooth pairing mode; Move device closer; Enable Bluetooth on source device. |
| MP3 playback issues | Unsupported file format; Corrupted files; USB/SD card not inserted correctly. | Ensure MP3 format; Check files for corruption; Reinsert USB/SD card. |
If the problem persists after trying these solutions, please contact VONYX customer support or your retailer for assistance.
10. Specifications
| Feature | Specification |
|---|---|
| Model | MEG075 |
| Power Output | 75 Watts |
| Range | Up to 1300 meters (1.3 km) |
| Battery Type | VONYX MRB12 Rechargeable Li-ion |
| Connectivity | Bluetooth, USB, SD Card |
| Dimensions (L x W x H) | 10 x 10 x 10 cm (approximate, as per product data) |
| Weight | 2.35 Kilograms |
| Included Components | Megaphone, 2x MRB12 Batteries, Transport Bag, User Manual |
11. Warranty and Support
This VONYX product is covered by a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support, troubleshooting assistance, or spare parts, please contact VONYX customer service or the authorized dealer from whom you purchased the product.





