1. Introduction
The Monster S380 Bluetooth Speaker delivers powerful 40W stereo sound with deep bass and clear highs. Featuring advanced Bluetooth 6.0 for stable connections, it offers up to 20 hours of playtime on a single charge. Its IPX6 waterproof rating makes it suitable for various environments, from poolside to outdoor adventures. The speaker supports TWS (True Wireless Stereo) pairing for an immersive stereo experience, and includes versatile connectivity options such as AUX and TF card input. A built-in microphone allows for convenient hands-free calling.
Figure 1: Monster S380 Bluetooth Speaker
2. What's in the Box
Please check the package contents upon unboxing to ensure all items are present:
- Monster S380 Speaker x 1
- USB-C Charging Cable x 1
- AUX-in Cable x 1
- Quick Start Guide x 1
- Portable Rope x 1
Figure 2: Package Contents
3. Product Overview
3.1. Buttons and Controls
Figure 3: Speaker Buttons Overview
- Mode Button: Switches between Bluetooth, AUX, and TF Card modes.
- Play/Pause Button: Plays or pauses audio. Answers/ends phone calls.
- Power Button: Powers the speaker on or off.
- Volume Down / Previous Song Button: Decreases volume (short press) or skips to the previous song (long press).
- Volume Up / Next Song Button: Increases volume (short press) or skips to the next song (long press).
3.2. Input Ports
Figure 4: Speaker Input Ports
- USB Port: For USB drive playback.
- TF Card Slot: For TF (microSD) card playback.
- AUX-in Port: For wired audio connection via 3.5mm AUX cable.
- Charging Port: USB-C port for charging the speaker.
4. Setup
4.1. Charging the Speaker
Before first use, fully charge the speaker. Connect the provided USB-C charging cable to the speaker's charging port and the other end to a compatible USB power adapter (e.g., phone charger, computer USB port). The charging indicator light will show the charging status and turn off once fully charged.
4.2. Power On/Off
To power on the speaker, press and hold the Power Button for approximately 2-3 seconds until you hear an audible prompt or see the indicator light illuminate. To power off, press and hold the Power Button again for 2-3 seconds.
5. Operating Instructions
5.1. Bluetooth Pairing
Figure 5: Bluetooth 6.0 Connectivity
- Turn on the Monster S380 speaker. It will automatically enter Bluetooth pairing mode, indicated by a flashing LED light.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "Monster S380" from the list of devices.
- Once connected, the speaker will emit a confirmation sound, and the LED light will become solid.
5.2. TWS (True Wireless Stereo) Pairing
Figure 6: TWS Connection Setup
To achieve a true wireless stereo experience with two Monster S380 speakers:
- Ensure both Monster S380 speakers are powered on and are not connected to any Bluetooth device.
- On one of the speakers (this will be your primary speaker), press and hold the Play/Pause Button for 3 seconds. The speaker will indicate it is searching for another speaker.
- The two speakers will automatically connect to each other. A confirmation sound will be heard once TWS pairing is successful.
- Now, connect your mobile device via Bluetooth to the primary speaker (the one you initiated TWS pairing on) as described in section 5.1.
5.3. AUX Mode
Insert the 3.5mm AUX cable into the speaker's AUX-in port and connect the other end to your audio device. The speaker will automatically switch to AUX mode. Use your connected device to control playback and volume, or the speaker's volume buttons.
5.4. TF Card Mode
Insert a TF (microSD) card with audio files into the TF card slot. The speaker will automatically switch to TF card mode and begin playback. Use the speaker's control buttons to manage playback and volume.
5.5. Hands-free Calling
When your speaker is connected to your smartphone via Bluetooth, you can use it for hands-free calls:
- Answer Call: Press the Play/Pause Button once.
- End Call: Press the Play/Pause Button once during a call.
- Reject Call: Press and hold the Play/Pause Button for 2 seconds.
5.6. Volume and Track Control
Use the dedicated buttons on the speaker for audio control:
- Increase Volume: Short press the Volume Up (+) Button.
- Decrease Volume: Short press the Volume Down (-) Button.
- Next Song: Long press the Volume Up (+) Button.
- Previous Song: Long press the Volume Down (-) Button.
6. Maintenance
6.1. Cleaning
Wipe the speaker with a soft, damp cloth. Do not use harsh chemicals, abrasive cleaners, or solvents, as these may damage the surface or internal components.
6.2. Water Resistance (IPX6)
Figure 7: IPX6 Waterproof Feature
The Monster S380 speaker is rated IPX6 waterproof, meaning it can withstand powerful water jets. It is resistant to splashes, rain, and spills. Do not submerge the speaker in water. Always ensure the rubber flap covering the input ports is securely closed to maintain its water resistance.
6.3. Storage
Store the speaker in a cool, dry place away from direct sunlight, extreme temperatures, and excessive humidity. If storing for an extended period, charge the battery periodically to maintain its lifespan.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on | Low battery; Power button not pressed correctly | Charge the speaker fully. Press and hold the Power button for 2-3 seconds. |
| No sound | Volume too low; Incorrect mode; Not paired/connected | Increase volume on speaker and device. Press Mode button to select correct input. Re-pair Bluetooth or check AUX/TF card connection. |
| Bluetooth pairing fails | Speaker not in pairing mode; Device too far; Interference; Already connected to another device | Ensure speaker LED is flashing. Move device closer. Turn off other Bluetooth devices. Forget "Monster S380" on your device and try again. |
| TWS pairing fails | Speakers already connected to other devices; Incorrect pairing steps | Ensure both speakers are disconnected from all devices. Repeat TWS pairing steps carefully (Section 5.2). |
| Poor sound quality | Weak Bluetooth signal; Low-quality audio source | Move device closer to the speaker. Use high-quality audio files/streaming services. |
8. Specifications
- Brand: Monster
- Model Number: MS62153 (S380)
- Connectivity: Bluetooth 6.0, AUX, TF Card, USB
- Audio Output: 40W Stereo Sound (up to 80W with TWS pairing)
- Battery Life: Up to 20 hours
- Water Resistance: IPX6
- Product Dimensions: 8.5 x 21 x 8.8 cm
- Product Weight: 880 g
- Control Method: Touch (buttons)
- Audio Driver Type: Dynamic Driver
9. Warranty and Support
The Monster S380 Bluetooth Speaker comes with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please refer to the Quick Start Guide included in your product package or visit the official Monster website for the most up-to-date support resources.