Soundbar Buyer's Guide: Adding a Subwoofer

Modern TVs impress with increasingly slim designs and brilliant pictures. However, this evolution often means that sound quality falls short. Due to physical limitations, the integrated speakers can rarely produce room-filling, detailed sound. A soundbar with a subwoofer is an effective and space-saving solution to significantly upgrade the audio experience in your living room.

However, the selection of models is vast, and the technical specifications can quickly become overwhelming. This guide is here to help you navigate the options. It explains the most important features and presents a selection of devices to help you make an informed decision when you're ready to buy a soundbar.

What to Look for When Buying a Soundbar with a Subwoofer?

To find the right model for your needs, you should consider a few fundamental technical aspects. These will help you better understand product descriptions and match the features to your personal requirements.

Understanding Channel Systems: From 2.1 to Dolby Atmos

The number combinations, such as 2.1 or 5.1, describe the number of audio channels.

• 2.1 System: This is the most common configuration. It consists of a soundbar with two channels (left and right) and a separate subwoofer for low frequencies (bass). Such a system is already a significant improvement over TV speakers and is well-suited for everyday use.
• 5.1 System: A 5.1 soundbar expands the soundstage with a centre channel for clearer dialogue and two rear surround channels for a more spatial sound. This creates a true home cinema system feel, where sounds appear to come from different directions.
• Dolby Atmos Soundbar: This technology adds a height dimension to the sound. Special, upward-firing speakers in the soundbar reflect sound off the ceiling, creating the impression that audio is also coming from above. This is particularly impressive for movies and games with a corresponding audio track.

The Right Connections: HDMI eARC and Bluetooth

The connection options determine how easily and with what quality the soundbar communicates with your TV and other devices.

• HDMI eARC Soundbar: The "HDMI eARC" (Enhanced Audio Return Channel) port is the preferred connection method. A single HDMI cable transmits high-quality audio signals—including Dolby Atmos—from the TV to the soundbar. Another advantage is that the soundbar's volume can usually be controlled with the TV remote.
• Bluetooth Soundbar: An integrated Bluetooth function allows for wireless music streaming from a smartphone, tablet, or laptop. This turns the soundbar into a versatile audio solution for the entire living space.

The Subwoofer: Wired or Wireless?

The subwoofer is responsible for reproducing deep bass tones, giving movies, series, and music the depth they need. A soundbar with a wireless subwoofer offers maximum placement flexibility. Since it only requires a power cable, the subwoofer can be placed wherever the bass sounds best in the room, without needing to run an audio cable to the TV or soundbar.

Soundbars with Separate Subwoofers

Based on the criteria mentioned, we have compiled a selection of models that cater to different needs and use cases.

ULTIMEA 2.1ch Soundbar with Wireless Subwoofer, Poseidon R3T

Why it stands out: The ULTIMEA Poseidon R3T is a 2.1-channel system designed for a clear audio enhancement for your TV. With a peak power of 240 watts, it delivers powerful sound. Noteworthy features include VoiceMX technology for improved dialogue clarity and BassMX for deep bass. The app control allows for detailed sound customisation via a 10-band equaliser.

Pros:

• Wireless subwoofer for flexible placement
• VoiceMX technology for crystal-clear dialogue
• Customisable sound via the Ultimea app
• Modern connectivity with Bluetooth 6.0 and HDMI ARC

Who is it for? This model is a great choice for beginners and users looking for a straightforward and effective upgrade to their TV's sound. It is ideal for small to medium-sized rooms and offers a significant improvement for movies, series, and music without the need to set up a complex surround system.

LG Soundbar DS90TY (Dolby Atmos, 5.1.3 Channels) [2025 Model]

Why it stands out: The LG DS90TY is a high-performance system for demanding home cinema users. With 5.1.3 channels, including three upward-firing speakers, it creates an immersive Dolby Atmos and DTS:X sound experience. The total power of 570 watts ensures room-filling and dynamic sound, even in larger spaces. According to the manufacturer, the AI Sound Pro feature analyses content in real-time and automatically adjusts the audio settings.

Pros:

• Immersive 3D sound through 5.1.3 channels and Dolby Atmos
• High power output of 570 watts
• Support for a wide range of audio formats like Dolby TrueHD and DTS-HD Master Audio
• Wireless subwoofer and modern connectivity options

Who is it for? This Dolby Atmos soundbar is aimed at film and series fans who want to create an authentic cinema experience at home. Anyone who values three-dimensional sound and high power reserves will find this a suitable system for immersive entertainment.

ULTIMEA 5.1ch Dolby Atmos Soundbar, Poseidon M4T

Why it stands out: The ULTIMEA Poseidon M4T offers a complete 5.1 home cinema system with Dolby Atmos support. The set consists of a 3-channel soundbar, a wireless subwoofer, and two wired surround speakers. This configuration allows for precise placement of the rear speakers for an authentic surround experience. HDMI eARC ensures the transmission of high-resolution audio formats.

Pros:

• Complete 5.1-channel system for true surround sound
• Dolby Atmos decoding for a three-dimensional sound experience
• Separate surround speakers for flexible room setup
• HDMI eARC for lossless audio transmission
• Six preset EQ modes for different content (Movie, Music, Game, etc.)

Who is it for? This system is designed for users looking for a fully-fledged surround setup that goes beyond virtual surround sound. The combination of Dolby Atmos and physical surround speakers makes it a great solution for anyone wanting to turn their living room into a small cinema.

Do You Need the Right Accessories?

To take full advantage of your new soundbar's capabilities, especially features like HDMI eARC and Dolby Atmos transmission, a suitable connection cable is required. Not all HDMI cables support the necessary bandwidth for high-resolution audio formats.

To ensure the best possible audio quality, the right cable is crucial. Discover our selection of certified HDMI cables to connect your new home cinema system optimally.

Frequently Asked Questions (FAQ)

What is the advantage of a soundbar with a subwoofer?

A soundbar alone already improves dialogue clarity and the overall soundstage. A subwoofer complements this by exclusively handling the low frequencies (bass). This takes the load off the soundbar, allowing it to reproduce mids and highs more precisely. The result is a fuller, more dynamic, and impressive sound profile that particularly shines with movies and music.

How is a soundbar with a subwoofer connected?

The connection to the TV is easiest and offers the best quality via an HDMI cable to the HDMI eARC or ARC port. Alternatively, an optical digital cable can be used. For wireless models, the subwoofer itself is simply plugged into a power outlet and then automatically connects to the soundbar via a wireless signal.

Is a Dolby Atmos soundbar a worthwhile purchase?

For film and gaming enthusiasts, a Dolby Atmos soundbar is a very worthwhile investment. The added height dimension creates a significantly more immersive experience, as sounds like rain or helicopters flying overhead can be perceived realistically from above. The prerequisite is that the content being played (e.g., from streaming services or Blu-rays) also has a Dolby Atmos audio track. For users who mainly watch news and talk shows, the added value is less significant.