EarFun UBOOM L Portable Bluetooth Speaker User Manual

What's in the Box

• EarFun UBOOM L speaker
• USB-C Cable
• User Manual

Product Diagram

The speaker features a rectangular design with controls and indicators on the top surface. A detailed diagram labels the following components:

• 1. Power button: Used to turn the speaker on/off.
• 2. Bluetooth button: Used for Bluetooth pairing and mode selection.
• 3. Volume - button: Decreases volume.
• 4. Play button: Controls playback (play/pause, next/previous track, answer/end call).
• 5. Volume + button: Increases volume.
• 6. Sound Mode button: Selects sound modes (Outdoor, Indoor, TWS/Party).
• 7. Power LED indicator: Shows power status (e.g., Blue LED ON for power on, Blue LED OFF for power off).
• 8. Video Mode LED indicator: Indicates if Video Mode is active (White video mode LED ON/OFF).
• 9. Battery Level LED indicator: Displays remaining battery life (e.g., 4 White LEDs >75%).
• 10. Sound Mode LED indicator: Shows the selected sound mode (e.g., White sound mode LED ON for Outdoor mode).
• 11. Microphone: For voice assistant or calls.
• 12. USB-C charging port: For charging the speaker.
• 13. 3.5mm Aux input: For wired audio connection.
• 14. Reset hole: A small hole for resetting the device.

A separate view shows the charging port area with the USB-C charging port and the reset hole labeled.

Charging

To charge the speaker:

1. Clean the USB-C charging port before charging.
2. Fully charge the speaker before first use.
3. Close the port cover to avoid water damage.

Battery level is indicated by white LEDs:

• 4 x White LEDs: >75%
• 3 x White LEDs: <75%
• 2 x White LEDs: <50%
• 1 x White LED: <25%
• 1 x White LED (flashing): <10% (charging needed)

Connect the USB-C cable to the charging port for charging.

Specifications

Bluetooth Pairing

Follow these steps to pair your device:

1. Step 1: Power on the speaker. Press the Bluetooth button; the speaker will enter pairing mode.
2. Step 2: Activate Bluetooth on your Bluetooth-enabled device and search for other Bluetooth devices.
3. Step 3: Select "EarFun UBOOM L" from the list of Bluetooth devices shown. If a password is needed, enter '0000'.

A visual shows a phone screen with Bluetooth settings, displaying "UBOOM L" as a device to connect to.

True Wireless Stereo Connection with Two Speakers

Connect two EarFun UBOOM L speakers for a stereo experience:

1. Step 1: Pair and connect speaker A to your Bluetooth device as described in the Bluetooth Pairing section.
2. Step 2: Power on speaker B. Press and hold the Bluetooth buttons of both speakers (A and B) for at least 3 seconds. The blue indicators on both speakers will flash, indicating they are connecting to each other.
3. Step 3: Once the indicators stay blue, the two speakers are successfully connected in True Wireless Stereo (TWS) mode. Speaker A will play the Left channel, and speaker B will play the Right channel.

Note: Pressing and holding the sound mode button for 2 seconds can switch between stereo and party modes when TWS is connected. In party mode, both speakers share the same sound channel.

Functions

Notes:

• Activating Video Mode reduces latency to approximately 150ms, improving video watching experience but shortening connection distance. It is recommended to turn off Video Mode when playing music.
• Video Mode does not support True Wireless Stereo connection.
• Normal Mode provides latency of about 250ms.
• Bluetooth technology cannot fully eliminate Bluetooth audio latency.

Reset and Reconnecting

If the speaker becomes disconnected or experiences other connection problems:

• Simultaneously press and hold the "Volume +" and "Volume -" buttons for at least 5 seconds. This removes all paired devices and old pairings from the speaker. You will then need to pair again.

If the speaker crashes:

• Press and hold the power button for at least 8 seconds to reboot.
• Alternatively, insert a straightened paper clip or similar item into the reset hole (located at the back of the speaker) to press the internal button, resetting the speaker. Power on again after resetting.

FCC Statement

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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.

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.

RF Exposure Compliance

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

CAUTION

Risk of explosion if the battery is replaced by an incorrect type. Disposal of a battery into fire or a hot oven, or mechanically crushing or cutting of a battery, can result in an explosion. Leaving a battery in an extremely high temperature surrounding environment can result in an explosion or the leakage of flammable liquid or gas. A battery subjected to extremely low air pressure may result in an explosion or the leakage of flammable liquid or gas.

Declarations and Trademarks

BLUETOOTH

The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Any use of such marks by Earfun Technology (HK) Limited is under license. Other trademarks and trade names are those of their respective owners.

EU Declaration of Conformity

Earfun Technology (HK) Limited hereby declares that this equipment is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU and RoHS 2011/65/EU Directive. The declaration of conformity may be consulted in the support section of our Web site, accessible from www.myearfun.com.

UK Declaration of Conformity

Earfun Technology (HK) Limited declares that the radio equipment type [SP300] is in compliance with UK Radio Equipment Regulations (SI 2017/1206). The full text of the declaration of conformity is available at the following internet address: www.myearfun.com.

NCC Statement (聲明)

取得審驗證明之低功率射頻器材, 非經核准, 公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。低功率射頻器材之使用不得影響飛航安全及干擾合法通信; 經發現有干擾現象時, 應立即停用, 並改善至無干擾時方得繼續使用。前述合法通信, 指依電信管理法規定作業之無線電通信。低功率射頻器材須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。

Model/FCC ID: SP300 / 2AVIT-SP300

Certifications: CE ♻️ ✔️ UKCA ?❌ ? ® 018-220127