Monster D133 Portable Bluetooth Speaker User Manual

1. Product Overview

The Monster D133 Portable Bluetooth Speaker (Model S150) is a high-fidelity, stereo surround wireless speaker designed for versatile audio playback. It features a robust, waterproof design, advanced DSP control, and multiple input options for an immersive listening experience.

What's in the Box

• Speaker x 1
• Charging cable x 1
• Manual x 1
• Warranty card x 1
• Certificate of conformity x 1

Key Features

• DSP Control: Advanced digital signal processing for enhanced sound quality.
• IPX7 Waterproof: Can withstand immersion in water up to 1 meter for 30 minutes.
• TWS Interconnection: Connect two S150 speakers for true wireless stereo surround sound.
• Bluetooth 5.4: Ultra-high-speed transmission with a connection range of approximately 20 meters.
• 52mm Speaker Unit: Delivers powerful bass and clear highs.
• Built-in Microphone: For clear, hands-free conversations.
• Multiple Playback Modes: Supports Bluetooth, TF card, AUX IN, and USB (U disk) playback.
• Long Battery Life: 2000mAh capacity provides up to 10 hours of playback at 50%-60% volume, with efficient 5V-1A charging in 4 hours.
• Lightweight and Portable: Compact design for easy carrying.

2. Setup

Initial Charging

Before first use, fully charge your Monster D133 speaker. Connect the provided USB charging cable to the USB-C charging port (4) on the speaker and a suitable 5V-1A power adapter (not included). The charging indicator light (3) will illuminate during charging and turn off once fully charged. A full charge takes approximately 4 hours.

Powering On/Off

To power on the speaker, long press the Power On/Off button (6) for 2 seconds. To power off, long press the same button for 2 seconds.

Bluetooth Pairing

1. Ensure the speaker is powered on and in Bluetooth mode. The Bluetooth indicator (11) will blink, indicating it's ready for pairing.
2. On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
3. Select "Monster S150" from the list of found devices.
4. Once connected, the speaker will emit a confirmation sound, and the Bluetooth indicator (11) will remain solid.

TWS (True Wireless Stereo) Connection

To achieve double surround sound, you can connect two Monster S150 speakers:

1. Ensure both speakers are powered on and not connected to any other Bluetooth device.
2. On one speaker, double press the Bluetooth mode button (11). It will enter TWS pairing mode.
3. The two speakers will automatically search and connect to each other.
4. Once connected, one speaker will act as the master (left channel) and the other as the slave (right channel).
5. Now, connect your device to the master speaker via Bluetooth as described in the "Bluetooth Pairing" section.

3. Operating Instructions

Button Functions

Music Playback

The speaker supports various playback modes:

• Bluetooth Playback: After successful pairing, music from your connected device will play through the speaker.
• AUX Playback: Connect an audio source using a 3.5mm AUX cable to the AUX input interface (1). The speaker will automatically switch to AUX mode.
• USB Playback: Insert a USB flash drive with audio files into the USB (Audio) input interface (2).
• TF Card Playback: Insert a TF (MicroSD) card with audio files into the TF CARD input interface (5).

Use the Mode Switch button (6) to cycle through the different input sources.

Hands-Free Calling

When connected via Bluetooth to a smartphone, the built-in microphone allows for hands-free calls. Short press the Play/Pause button (9) to answer or end a call.

Lighting Effects

The speaker features dynamic lighting effects. Long press the Lighting Mode button (7) to turn the lighting on or off. Short press the button to cycle through different lighting effects.

4. Maintenance

Waterproof Care (IPX7)

The Monster D133 speaker has an IPX7 waterproof rating, meaning it can be submerged in water up to 1 meter for 30 minutes without damage. However, to maintain its waterproof integrity:

• Ensure the rubber flap covering the ports (AUX, USB, USB-C, TF CARD) is securely closed before exposing the speaker to water.
• Do not expose the speaker to saltwater or other chemicals, as this may degrade the seals over time.
• After exposure to water, especially chlorinated or saltwater, rinse the speaker with fresh water and dry it thoroughly before charging or using the ports.
• Avoid extreme temperatures, which can affect the integrity of the waterproof seals.

General Care

• Clean the speaker with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Store the speaker in a cool, dry place when not in use.
• Avoid dropping or subjecting the speaker to strong impacts.

5. Troubleshooting

• Speaker does not power on: Ensure the battery is charged. Connect the speaker to a power source using the charging cable.
• Cannot pair via Bluetooth: Make sure the speaker is in Bluetooth pairing mode (indicator blinking). Ensure your device's Bluetooth is enabled and within range (up to 20 meters). Try clearing previously paired devices from the speaker (long press Bluetooth button for 5 seconds) and your device's Bluetooth list.
• No sound: Check the volume levels on both the speaker and your connected device. Ensure the correct input mode is selected (Bluetooth, AUX, USB, TF Card).
• Sound distortion: Move the speaker closer to the Bluetooth source to avoid interference. Reduce the volume if it's too high.
• TWS connection fails: Ensure both speakers are not connected to any other Bluetooth device before attempting TWS pairing. Double press the Bluetooth button on one speaker to initiate TWS mode.

6. Specifications

Note: The above data are from the (Monster China) laboratory, but there may be differences or errors due to changes in the use environment. Please refer to the actual product for details.

7. Warranty and Support

For warranty information and customer support, please refer to the warranty card included in your product package or contact Monster customer service directly. Keep your proof of purchase for any warranty claims.

8. User Tips

• Optimal Sound: For the best audio experience, place the speaker on a stable surface and ensure there are no obstructions between the speaker and your audio source.
• Battery Preservation: To prolong battery life, avoid fully discharging the speaker frequently. Charge it regularly, especially if storing it for extended periods.
• Outdoor Use: While IPX7 waterproof, avoid prolonged exposure to direct sunlight or extreme weather conditions to ensure longevity.
• TWS Placement: When using TWS, place the two speakers within close proximity (e.g., 1-2 meters apart) for optimal stereo separation and connection stability.