UTHAI AK2803 Wireless Bluetooth Speaker User Manual

1. Introduction

Thank you for choosing the UTHAI AK2803 Wireless Bluetooth Speaker. This high-quality, high-power subwoofer speaker features a unique alien-inspired design with dynamic LED lighting, delivering a shocking sound experience. This manual provides essential information for setting up, operating, and maintaining your speaker.

UTHAI AK2803 Wireless Bluetooth Speaker front view with orange lights, highlighting Bluetooth 5.0, 3.5mm audio connection, stable transmission, hands-free call, and 10m Bluetooth distance. — UTHAI AK2803 Speaker: High-Performance Bluetooth 5.0 with 3.5mm Audio Cable Connection, supporting stable transmission, hands-free calls, and a 10m Bluetooth range.

UTHAI AK2803 Wireless Bluetooth Speaker front view with orange lights, emphasizing shocking sound quality, Bluetooth 5.0, dynamic LED lighting effect, and TWS two-unit stereo support. — Experience shocking sound quality with Bluetooth 5.0, dynamic LED lighting, and TWS two-unit stereo support.

2. Package Contents

Please check the box for the following items:

UTHAI AK2803 Wireless Bluetooth Speaker
User Manual
3.5mm Audio Line
Charging Cable

Image showing the UTHAI AK2803 speaker with green LED lights, alongside its included accessories: a user manual, a 3.5mm audio line, and a charging cable. — Included accessories: Manual, Audio Line, and Charging Cable.

3. Specifications

Feature	Specification
Model	AK2803
Brand	UTHAI
Category	Speakers
Speaker Type	Subwoofer
Channels	2 (2.0)
Cabinet Material	Metal
Audio Crossover	Full-Range
Number of Loudspeaker Enclosure	1
Bluetooth Version	5.0
Bluetooth Distance	10 meters (barrier-free)
Communication	Bluetooth, 3.5mm Audio Line
Power Output	20W (mid-bass) + 10W (high frequency)
Signal-to-Noise Ratio	≥70dB
Battery Capacity	4000mAh
Power Source	Battery, USB
Charging Time	2-3 hours
Playback Time	8-10 hours
Charging Voltage	5V/1.5A
Product Dimensions	204.6 x 174.7 x 208mm
Product Weight	960g ± 50g
Waterproof	Yes
Voice Control	No
Support APP	No
Intelligent Personal Assistant	None
Dynamic LED Lighting	Yes (Holographic Breathing Light)
Use Environment	Home
Certification	CE

UTHAI AK2803 Wireless Bluetooth Speaker front view with orange LED, listing key specifications: Playing time 6+ hours, Dynamic LED lighting, Bluetooth version 5.0, Audio connection, Size 21x17x21cm, Two connections: Bluetooth/Audio, Power 20W mid-bass + 10W high frequency. — Key specifications of the UTHAI AK2803 speaker.

Detailed product introduction and specifications in Chinese, including wireless Bluetooth connection, TWS support, 10m distance, Bluetooth 5.0/3.5mm audio, dynamic LED, 4000mAh battery, super bass, built-in microphone, adjustable bass/volume, active bracket, TWS pairing diagram, and product parameters table. — Comprehensive product introduction and technical parameters.

4. Setup

4.1 Charging the Speaker

Connect the provided charging cable to the charging port on the speaker.
Connect the other end of the charging cable to a compatible USB power source (e.g., a 5V/1.5A USB wall adapter or computer USB port).
The LED indicator will show the charging status. A full charge typically takes 2-3 hours.
Once fully charged, disconnect the charging cable.

4.2 Powering On/Off

To Power On: Press and hold the Power button (location not specified in images, typically on the top or back) for a few seconds until the LED lights illuminate and you hear a power-on sound.
To Power Off: Press and hold the Power button again for a few seconds until the LED lights turn off and you hear a power-off sound.

5. Operating Instructions

5.1 Bluetooth Connection

Ensure the speaker is powered on and in Bluetooth pairing mode (the LED indicator may flash).
On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
Select "UTHAI AK2803" from the list of devices.
Once connected, the speaker will indicate a successful pairing (e.g., a steady LED light or an audible prompt).
The effective Bluetooth range is approximately 10 meters (33 feet) in an open environment.

Diagram illustrating a stable Bluetooth 5.0 connection between a device and the speaker, showing the Bluetooth chip and signal transmission. — New Bluetooth 5.0 ensures stable connection without dead angles.

5.2 TWS (True Wireless Stereo) Pairing

For an immersive stereo experience, you can pair two identical UTHAI AK2803 speakers:

Ensure both speakers are powered on and not connected to any other Bluetooth device.
On one speaker, initiate TWS pairing mode (refer to the speaker's controls for a dedicated TWS button or a specific button combination).
The two speakers will automatically search for and pair with each other. Once paired, one speaker will act as the master (left channel) and the other as the slave (right channel).
Connect your device to the master speaker via Bluetooth as described in Section 5.1.
Enjoy enhanced stereo sound.

Diagram showing two UTHAI AK2803 speakers pairing wirelessly to a phone for TWS stereo sound. — TWS Pairing: Two identical Inva-X units can be paired to form left and right channels for shocking surround sound.

5.3 Wired Audio Connection

To connect via a 3.5mm audio cable:

Connect one end of the provided 3.5mm audio line to the AUX-in port on the speaker.
Connect the other end to the audio output jack of your device (e.g., computer, MP3 player).
The speaker will automatically switch to AUX mode or you may need to select it manually.

5.4 Controls and Functions

Volume Adjustment: Use the volume controls on the speaker or your connected device to adjust the playback volume.
Bass Effect Adjustment: The speaker features an adjustable bass effect. Use the dedicated controls (if available) or refer to the manual for specific instructions on how to modify the bass output.
Hands-free Calling: With the built-in microphone, you can answer calls directly through the speaker when connected via Bluetooth. Press the designated button (e.g., Play/Pause button) to answer or end a call.
Dynamic LED Lighting: The speaker features dynamic LED lighting effects. These lights will activate automatically when the speaker is on and playing audio.

A person playing a video game on a curved monitor, with two UTHAI AK2803 speakers on the desk, highlighting the hands-free calling feature. — Free your hands with easy answering for calls.

Close-up of the UTHAI AK2803 speaker showing its dynamic LED lighting in purple. — Dynamic LED Lighting in action.

Close-up of the UTHAI AK2803 speaker showing its holographic breathing light in orange. — Holographic Breathing Light: Exquisite workmanship, light is vivid.

6. Maintenance

Cleaning: Use a soft, dry cloth to clean the speaker's exterior. Do not use abrasive cleaners or solvents.
Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in active use.
Water Resistance: The speaker is waterproof. However, avoid submerging it in water or exposing it to strong jets of water.

7. Troubleshooting

7.1 No Power

Ensure the speaker is fully charged. Connect it to a power source using the charging cable.
Press and hold the Power button firmly to ensure it's turned on.

7.2 No Sound

Check the volume level on both the speaker and your connected device.
Ensure the speaker is correctly connected via Bluetooth or the 3.5mm audio line.
If using Bluetooth, try disconnecting and re-pairing the device.

7.3 Bluetooth Connection Issues

Make sure the speaker is within 10 meters of your device.
Ensure there are no significant obstacles (walls, large metal objects) between the speaker and your device.
Turn off Bluetooth on your device, then turn it back on and try pairing again.
Restart both the speaker and your device.
Clear the Bluetooth pairing list on your device and try to pair from scratch.

7.4 TWS Pairing Failure

Ensure both speakers are identical UTHAI AK2803 models.
Make sure both speakers are not connected to any other Bluetooth device before initiating TWS pairing.
Follow the TWS pairing steps carefully, ensuring both speakers are in pairing mode simultaneously.

8. User Tips

For the best audio experience, place the speaker on a stable surface at ear level.
Utilize the TWS pairing feature with a second AK2803 speaker to create a truly immersive stereo soundstage for movies or gaming.
Keep the speaker charged regularly to ensure it's always ready for use, especially before extended listening sessions.
Take advantage of the hands-free calling feature for convenient communication during gaming or other activities.

9. Warranty and Support

Your UTHAI AK2803 Wireless Bluetooth Speaker comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product functions as intended under normal use.

For any quality problems or technical assistance, please contact the seller directly. All inquiries are typically answered within 24 hours.

Diagram showing the UTHAI AK2803 speaker in a home theater setup, emphasizing immersive sound. — Let you 'sound' immersive with stereo surround sound.

Two UTHAI AK2803 speakers integrated into a gaming environment with a large monitor and PC setup. — Build your gaming environment with the imitation alien shape design, adding a sense of technology.

UTHAI AK2803