1. Safety Instructions
Please read this user manual carefully and save it for future reference. Do not make unauthorized alterations to the product, doing so may compromise safety, regulatory compliance, system performance, and may void the warranty.
- Avoid dropping the device.
- Do not disassemble the device.
- Do not submerge the device in water.
- Avoid extreme temperatures.
- Do not use the device outdoors during thunderstorms.
- Use original or certified cables.
- Do not place dangerous items on top of this device (e.g., liquid-filled objects, lit candles).
- Clean with a dry, soft, lint-free cloth. Do not use any corrosive cleaner or oil.
- To avoid hearing damage, do not listen for extended periods at high volume.
- Do not expose the batteries to extreme heat sources such as direct sunlight or open flames.
- The ideal operating temperature for this product and its accessories is between 41°F/5°C and 95°F/35°C.
- The adapter should be installed near the device and should be easily accessible.
- Do not use this product in environments of extreme heat or cold. Never expose this device to strong sunshine or wet environments.
Proper Disposal Instructions
This mark shown on the product or its packaging indicates that this product should not be disposed of with other household waste at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources.
Household users should contact either the retailer where they purchased this product, or their local government office, for details of where and how they can take this item for environmentally safe recycling. Business users should contact their suppliers and check the terms and conditions of the purchase contract. This product should not be mixed with other commercial wastes for disposal.
2. Accessories List
The following items are included in your package:
- 1 x Subwoofer
- 1 x Soundbar
- 2 x Surround Speakers
- 1 x Power Adaptor
- 1 x Subwoofer Power Cable
- 1 x Stereo 3.5mm to RCA Audio Cable
- 1 x Stereo RCA to RCA Cable (6m)
- 1 x HDMI Cable
- 1 x Digital Optical Cable
- 1 x Remote Control
- 8 x Wall Mounted Kit
- 4 x Wall Bracket
- 4 x Mounting Screw on Speakers
- 1 x User Manual

Image: Contents of the ULTIMEA Poseidon D60 package.
3. Soundbar Controls
Control Panel
- Power Button (
): Press to power on/off. - Input Mode (
): Press to switch channels: eARC-BT-OPT-AUX-USB. - Bluetooth (
): Press to switch to BT channel and enter pairing mode. Hold for 3 seconds to disconnect the current device and choose to connect to a new device manually on your mobile phone / PC / TV (BT ID: Poseidon D60). - Volume Down (-): Decrease volume.
- Volume Up (+): Increase volume.
Remote Control

Image: Remote control for ULTIMEA Poseidon D60.
- Power Button (
): Press to power on/off. - eARC (
): Press to switch to HDMI eARC channel. - Bluetooth (
): Press to switch to BT channel and enter pairing mode. Hold for 3 seconds to disconnect current device and choose to connect to a new device manually on your mobile phone / PC / TV (BT ID: Poseidon D60). - OPT (
): Press to switch to OPT channel. - AUX (
): Press to switch to AUX channel. - EQ (
): Press to switch among Movie, Dialogue, Music mode. The display will show: "E901", "E902", "E903". - USB (
): Press to switch to USB channel. - Volume Up (+): Increase volume.
- Volume Down (-): Decrease volume.
- Previous (<): BT and USB mode: Skip to previous track.
- Next (>): BT and USB mode: Skip to next track.
- Play / Pause (▷II): For BT and USB mode only. USB mode: Hold for 3 seconds to switch between single loop playback and list loop playback.
- SURROUND (
): Press to adjust surround sound level, the display will show: "Sr-1", "Sr0", "Sr1". - BASSMX (
): Press to adjust bass level. The display will show: "bS-1", "bS0", "bS1". - Mute / Recover Volume (
): Mute or unmute the sound.
4. Setup and Installation
4.1. Connecting to TV via eARC / ARC
- Connect one end of the HDMI cable to the eARC/ARC port on the back of your TV.
- Then connect the other end into the eARC port of the soundbar.
- Press the "eARC" button on the remote control to select "eARC" input.

Image: HDMI eARC/ARC connection steps.
Note: Your TV's HDMI port needs to support eARC to transmit the Dolby Atmos audio format to your Soundbar.
- Atmos: If you are watching a movie in the Dolby Atmos format, please set the audio output on your TV to Pass Through: TV Settings > Home > Settings > Sound > Digital Audio Output > Pass Through
- DTS: If you are watching a movie in the DTS format, please set the audio output on your TV to PCM: TV Settings > Home > Settings > Sound > Digital Audio Output > PCM
What's the difference between: HDMI IN, HDMI ARC, HDMI eARC?
- HDMI IN: A standard HDMI input that allows you to connect devices to your TV or audio system. It supports audio and video signals, but it does not support audio return channel (ARC) or enhanced audio return channel (eARC) functionality.
- HDMI ARC: A special HDMI port that supports two-way communication between your TV and audio system. This means that audio can be sent from your TV to your audio system, and the audio system can send audio back to your TV.
- HDMI eARC (Enhanced Audio Return Channel): An updated version of HDMI ARC that supports higher quality audio formats such as Dolby Atmos and DTS:X.
Note: Please turn on the "CEC" function on your TV. When eARC / ARC is connected, your TV remote control can control the soundbar and TV simultaneously: Turn on / off and Adjust the volume.
4.2. Connecting to TV via Optical / AUX
Option 1: Optical
- Make sure the TV's port is OPTICAL OUT, connect both sides of the cable to OPTICAL, for both the TV and the soundbar.
- Make sure the optical plug is inserted correctly as it shows in the picture. Do not insert the plug upside down and break the optical.
Note: If audio is playing from the internal TV speakers, mute or minimize the TV volume. In Optical Mode: If there is no sound, try setting the TV audio output to PCM: TV Settings > Home > Settings > Sound > Digital Audio Output > PCM
Option 2: AUX
- Connect the 3.5mm to 3.5mm Audio Cable to your TV's AUDIO OUT port.
- Not support AUDIO IN port on TV.
Note: Please remember to unplug the AUX cable from TV and Soundbar when you want to switch to other mode.

Image: Optical and AUX connection options.
4.3. Connecting to Bluetooth
- Press the "
" button on the soundbar or remote control to enter Bluetooth pairing mode. - Go to the Bluetooth setting on your phone, find and select "Poseidon D60" to connect the soundbar.
Note: If it's already in the Bluetooth mode and connected, press and hold "
" button for 3 seconds to disconnect current device and choose to connect to new device manually on your mobile phone / PC / TV.
4.4. Connecting Subwoofer and Surround Speakers
- Use the 6m RCA-RCA cables to connect the subwoofer and surround speakers. Please pay attention to match the same color interfaces on the surround speakers with the corresponding ones on the subwoofer and place the surround speakers accordingly.
- Use power cable to connect your subwoofer and power port.

Image: Subwoofer and surround speaker connection diagram.
4.5. Pairing Subwoofer
The subwoofer has been paired with the soundbar by ULTIMEA. However, you may need to re-pair the soundbar and subwoofer if there is no sound coming from the subwoofer.
- Press and hold the "BASS MX" button on the remote control for 5 seconds, the display will show "Sub" flashing.
- Press and hold the ON/OFF button on subwoofer for 5 seconds, the white LED will be fast flashing.
The white LED will be solid on when the subwoofer is paired successfully.
4.6. Placement Options
For a better listening experience, please choose one of the two placement options shown in the illustration below based on your home environment.
- The soundbar and surround speakers should be placed at or near ear level.
Full 360° Surround (Better Surround)

Front Surround

Images: Placement options for surround speakers.
4.7. Wall Mount Installation
Wall-mounted surround speakers follow the same configuration as shown in the above pictures.

Image: Wall mount installation guide.
5. Operating the Soundbar
Once connected, you can operate the soundbar using either the control panel buttons or the remote control.
5.1. Power On/Off
Press the Power button (
) on the soundbar or remote control to turn the device on or off.
5.2. Selecting Input Mode
Press the Input Mode button (
) on the soundbar or the corresponding input button (eARC, BT, OPT, AUX, USB) on the remote control to switch between available audio sources.
5.3. Adjusting Volume
Use the Volume Up (+) or Volume Down (-) buttons on the soundbar or remote control to adjust the master volume.
5.4. EQ Modes
Press the EQ button (
) on the remote control to cycle through different sound modes: Movie ("E901"), Dialogue ("E902"), and Music ("E903").
5.5. Surround and Bass Level Adjustment
- Surround: Press the SURROUND button (
) on the remote control to adjust the surround sound level. The display will show: "Sr-1", "Sr0", "Sr1". - Bass: Press the BASSMX button (
) on the remote control to adjust the bass level. The display will show: "bS-1", "bS0", "bS1".
Note: When input Dolby Atmos source, 'Dolby Atmos' will be indicated on the soundbar display.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | U2520 |
| Power Supply | AC 100-240V, ~50/60Hz |
| Soundbar Drivers | 2.25" x 3 (Soundbar) + 2.25" x 2 (Surround Speaker) + 5.25" (Subwoofer) |
| Frequency Response | 40Hz - 18kHz |
| Standby Power | <0.5W |
| Operating Temperature | 0°C - 45°C / 32°F - 113°F |
Dimensions and Weight
| Component | Dimensions (W x H x D) | Approximate Imperial |
|---|---|---|
| Soundbar | 400(W) x 70(H) x 90(D)mm | 15.7" x 2.8" x 3.5" |
| Subwoofer | 155(W) x 244(H) x 215(D)mm | 6.1" x 9.6" x 8.5" |
| Surround Speaker | 135(W) x 70(H) x 90(D)mm | 5.3" x 2.8" x 3.5" |
| Packaging | 335(W) x 442(H) x 192(D)mm | 13.1" x 17.4" x 7.5" |
| Net Weight | 5.3kg / 11.68lbs | |
| Gross Weight | 6.8kg / 14.99lbs |
7. Troubleshooting
For common issues, please refer to the following:
- No Sound from Optical Connection: Ensure your TV's audio output is set to PCM (TV Settings > Home > Settings > Sound > Digital Audio Output > PCM).
- Subwoofer Not Producing Sound: If the subwoofer is not producing sound, you may need to re-pair it with the soundbar. Follow the pairing instructions in section 4.5.
- Bluetooth Connection Issues: If you have trouble connecting via Bluetooth, ensure no other devices are connected. Hold the Bluetooth button on the remote for 3 seconds to disconnect any current device and then try pairing again.
- Dolby Atmos/DTS Playback Issues: Verify your TV's audio output settings are correctly configured for Pass Through (for Dolby Atmos) or PCM (for DTS) as detailed in section 4.1.
If you encounter issues not covered here, please contact ULTIMEA customer support for assistance.
8. User Tips
- For the best immersive experience, experiment with the placement of the surround speakers. Placing them slightly behind and to the sides of your listening position often yields excellent results.
- Utilize the different EQ modes (Movie, Dialogue, Music) to optimize audio for various content types. Dialogue mode can significantly enhance vocal clarity for TV shows.
- Adjust the BassMX and Surround levels via the remote control to fine-tune the audio to your personal preference and room acoustics.
- Consider using the HDMI eARC connection for the highest quality audio transmission, especially for Dolby Atmos content.
9. Warranty and Support
For support, setup guidance videos, user manuals, or troubleshooting, please visit the ULTIMEA website or contact customer service:
- Website: support.ultimea.com
- US Customer Service: +1 888-598-8875 (Mon-Fri 9am-5pm PST)
- EU Customer Service: +49 89-628-25828 (Mon-Fri 9am-5pm CET)
- Email: support@ultimea.com
Manufacturer: Ultimea Technology (Shenzhen) Limited
Address: 20th Floor, Building 4, Tianan Cloud Park, Bantian St., Longgang District, Shenzhen, China 518000
This product is in conformity with the essential requirements of the RED Directive (2014/53/EU) & RoHS (2011/65/EU).
Trademarks: Dolby, Dolby Atmos, Bluetooth, and HDMI are trademarks of their respective owners.
10. Product Overview Video
Video: An overview of the ULTIMEA Poseidon D60 Soundbar system, demonstrating its Dolby Atmos 5.1 channel surround sound capabilities, BassMX technology, and connectivity options.
11. Additional Resources
A detailed user manual in PDF format is available for download:
