1. Introduction
Thank you for purchasing the ZEALOT S51 Pro Portable Bluetooth Speaker. This manual provides detailed instructions for setting up, operating, and maintaining your speaker to ensure optimal performance and longevity. Please read this manual carefully before use and keep it for future reference.
Key Features:
- Powerful Sound: 20W output with 57mm dual speakers and dual diaphragms for surging bass and clear audio.
- Bluetooth 5.2: Stable and efficient wireless connection up to 10 meters.
- Long Playtime: Built-in 3600mAh battery provides up to 10 hours of continuous music playback.
- IPX6 Waterproof: Resistant to splashes, rain, and gentle sprays, suitable for outdoor use.
- RGB Light Effect: Colorful light effects for an enhanced audio-visual experience.
- Multiple Playback Modes: Supports Bluetooth, Micro SD card, USB, and AUX-in.
- TWS Pairing: Connect two S51 Pro speakers for true wireless stereo sound.
- Built-in Microphone: For hands-free calling with noise cancellation.
2. Packing Content
Please check the box for the following items:
- 1 x ZEALOT S51 Pro Bluetooth Speaker
- 1 x Type-C Charging Cable
- 1 x User Manual
- 1 x Lanyard
3. Product Overview
Familiarize yourself with the speaker's components and controls.
Button Functions:
- Lanyard buckle: For attaching a lanyard.
- Play/Pause button: Single click to play or pause music.
- Volume - button: Single click for volume down. Long press for previous track.
- Volume + button: Single click for volume up. Long press for next track.
- M (Mode) button: Single click to switch modes (Bluetooth, Micro SD, USB, AUX).
- Couplet button: Single click for TWS pairing.
- Power button: Long press to power on/off.
- Charging Port (Type-C): For charging the speaker.
- TF Port: For Micro SD card playback.
- USB Port: For USB drive playback.
- AUX Port: For wired audio input.
4. Setup
4.1 Charging the Speaker
Before first use, it is recommended to fully charge the speaker. Use the provided Type-C charging cable and a DC 5V power adapter (not included, ensure it is CCC certified and meets standard requirements).
- Connect the Type-C end of the charging cable to the speaker's charging port.
- Connect the USB-A end of the charging cable to a DC 5V power adapter or a computer's USB port.
- The charging indicator light will show the charging status.
- Charging time is approximately 3 hours for a full charge.
4.2 Power On/Off
- To Power On: Long press the Power button for more than 2 seconds. The indicator light will flash.
- To Power Off: Long press the Power button for more than 2 seconds. The indicator light will turn off.
5. Operating Instructions
5.1 Wireless Connection (Bluetooth Pairing)
- Turn on the speaker. The indicator light will flash, indicating it's in pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "ZEALOT-S51 Pro" from the list of devices.
- Once connected, the indicator light on the speaker will remain solid.
5.2 PartyAdd (True Wireless Stereo - TWS)
To connect two S51 Pro speakers for a stereo experience:
- Ensure both S51 Pro speakers are powered on and not connected to any other Bluetooth device.
- On one speaker (this will be the primary speaker), single click the 'Couplet' button. It will enter TWS pairing mode.
- The two speakers will automatically connect to each other. You will hear an audible confirmation.
- Once connected, the primary speaker's indicator light will flash, and the secondary speaker's light will be solid.
- Now, connect your device to the primary speaker via Bluetooth as described in section 5.1.
5.3 Playback Control
- Play/Pause: Single click the Play/Pause button.
- Next Track: Long press the Volume + button.
- Previous Track: Long press the Volume - button.
- Volume Up: Single click the Volume + button.
- Volume Down: Single click the Volume - button.
5.4 Mode Switching
Single click the 'M' (Mode) button to cycle through available input modes: Bluetooth, Micro SD card, USB, and AUX-in.
5.5 Light Control
- Switch Light Mode: Single click the Light Switch button.
- Turn Lights On/Off: Long press the Light Switch button.
5.6 Calling
When connected via Bluetooth, the speaker can be used for hands-free calls:
- Answer Call: Single click the Play/Pause button.
- End Call: Single click the Play/Pause button.
- Reject Call: Long press the Play/Pause button.
6. Maintenance
6.1 Cleaning
Do not use organic solvents or other chemicals to clean the product. Use a soft, dry cloth to wipe the surface of the speaker.
6.2 Storage
Please use and store the product at room temperature. Do not expose the product to fire, high temperature, direct sunlight, or similar overheating conditions. Keep the product away from small particles that could enter and damage it.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker keeps cutting out during playback. | Speaker is out of range or obstacles are blocking the signal. | Ensure the speaker is within the 10m operating range and there are no obstructions between the speaker and your device. |
| Unable to connect to your device. | Bluetooth pairing issue. | Restart the speaker and try pairing again. Ensure your device's Bluetooth is on and discoverable. |
| Unable to play music from Micro SD card. | Incorrect format for card or music files. | Ensure the Micro SD card is formatted to FAT32. Supported music file formats are APE, FLAC, WAV, WMA, or MP3. |
| No sound during playback. | Volume too low or speaker paused. | Adjust the volume on both the speaker and your connected device. Check if the speaker is paused. |
| No sound in AUX-in mode. | Audio cable not connected properly. | Ensure the audio cable is securely connected to both the speaker's AUX port and your audio source. |
| Speaker does not turn on. | Low battery. | Charge the speaker for approximately 3 hours. |
| Speaker is unresponsive to any operation. | System glitch. | Reset the speaker by pressing the reset button located in the AUX-in jack (a small pinhole). |
8. Technical Specifications
| Feature | Specification |
|---|---|
| Wireless Version | Bluetooth 5.2 |
| Charging Voltage | DC 5V |
| Working Voltage | 3.7V |
| Transmission Distance | 10 meters |
| Frequency Range | 20Hz-20KHz |
| Speaker Size | Φ57mm * 2 |
| Signal-to-Noise Ratio (SNR) | ≥85dB |
| Distortion | <1% |
| Weight | 780g |
| Dimensions (L*W*H) | 86*86*204mm |
| Battery Capacity | 3600mAh |
| Playback Time | Up to 10 hours |
| Standby Time | ≥ 30 days |
| Charging Time | 3 hours |
| Input/Output | AUX |
| Sound Mode | Stereo Sound Mode |
| Waterproof Rating | IPX6 |
| Built-in Microphone | Yes |
| Support Memory Card | Yes (Micro SD) |
9. User Tips
- For optimal sound quality, ensure the speaker is placed on a stable surface and not obstructed.
- When using TWS pairing, connect your device to the primary speaker after the two speakers have successfully paired with each other.
- If experiencing connection issues, try restarting both the speaker and your Bluetooth device.
- To maximize battery life, avoid playing at maximum volume for extended periods.
10. Safety Warnings and Important Information
General Warnings:
- To ensure correct use and trouble-free operation, please read this user manual carefully first.
- For the first use, it is recommended to fully charge the speaker.
- Please use and store the product at room temperature.
- Do not expose the product to fire, high temperature, direct sunlight, etc.
- Please keep the speaker volume moderate to avoid temporary or permanent hearing impairment.
- Do not use organic solvents or other chemicals to clean the product.
- Do not let small particles enter the product.
- Do not disassemble the product or make any modifications to the product structure or any part thereof.
- If the battery is not replaced correctly, there will be an explosion accident; only the same battery type can be replaced.
- The battery (battery pack) must not be exposed to sunlight, fire, or similar overheating conditions.
- Do not throw or drop the product to avoid damage.
FCC Warning:
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Radiation Exposure Statement:
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
Hazardous Substances Information (China RoHS):
This electronic information product contains certain toxic or hazardous substances. Under normal use conditions as described in this manual, these substances will not leak, cause pollution to the environment, or cause serious harm to people or property for a period of 10 years. The product complies with the RoHS regulations (2002/95/EC directive).
11. Warranty and Support
For any issues or support needs, please refer to the official ZEALOT website or contact your retailer. Please note that disassembling the product or making any modifications will void the warranty.
A PDF version of the user manual is available for download from the official product page or by clicking here.
