Budget vs. Premium: Choosing Between Two Great Soundbars

When your TV's built-in speakers just aren't cutting it anymore, you've probably started looking at soundbars. They're the most popular way to upgrade your audio without turning your living room into a maze of wires and speakers. But with so many options out there, how do you know which one's right for you?

Today, I'm diving deep into two soundbars that represent completely different approaches to home audio: the budget-friendly LG S40T 2.1 Channel Soundbar at $156 and the premium Polk Audio Signa S4 Dolby Atmos Soundbar at $299. These aren't just random picks – they perfectly illustrate the classic dilemma of "good enough" versus "future-proof."

Understanding What Makes Soundbars Tick

Before we jump into the specifics, let's talk about what you should actually care about when buying a soundbar. Think of it like buying a car – you need to know what features matter for your daily drive.

Channel configuration is probably the most important spec you'll see. When you see "2.1," that means two main speakers (left and right) plus one subwoofer for bass. The LG S40T falls into this category. Move up to "3.1.2" like the Polk Signa S4, and you're getting three front channels (left, center, right), one subwoofer, and two height channels that bounce sound off your ceiling to create overhead effects.

Connectivity options determine how you'll actually use the thing. HDMI ARC (Audio Return Channel) lets your TV send audio back to the soundbar through the same cable that carries video. The newer HDMI eARC (enhanced Audio Return Channel) can handle higher-quality, uncompressed audio – think of it as a wider highway for audio data.

Spatial audio processing is where things get interesting. Technologies like Dolby Atmos don't just play sounds from left and right – they place specific sounds in a three-dimensional space around you. When a helicopter flies overhead in a movie, you'll actually hear it moving above you rather than just getting louder and softer.

The Contenders: Two Different Philosophies

LG S40T: The Practical Choice

Released in 2024, the LG S40T represents LG's approach to making quality audio accessible. At $156, it's positioned as a no-nonsense upgrade that focuses on doing the basics exceptionally well rather than chasing every premium feature.

The system consists of a compact 28-inch soundbar paired with a wireless subwoofer. That wireless connection is more important than it might seem – you can place the subwoofer anywhere in your room for optimal bass response, rather than being limited by cable length. The subwoofer itself packs a 200W amplifier, which is plenty of power for small to medium rooms.

What really sets the S40T apart in its price range is LG's AI Sound Pro technology. This isn't just marketing fluff – it actually analyzes the type of content you're watching and adjusts the audio processing accordingly. Watching the news? It'll emphasize dialogue clarity. Streaming an action movie? It'll open up the soundstage and enhance dynamic range.

The Clear Voice Plus feature is particularly clever. Instead of just boosting all midrange frequencies (which can make everything sound muddy), it specifically targets the frequency ranges where human speech occurs. I've found this makes a huge difference when watching shows with heavy accents or rapid dialogue.

Polk Signa S4: The Enthusiast's Entry Point

The Polk Audio Signa S4, launched in 2025, takes a completely different approach. At $299, it's targeting users who want a taste of premium home theater audio without the four-figure price tag that usually comes with true Dolby Atmos systems.

This is a proper 3.1.2 system, meaning it has seven drivers total: dedicated left, center, and right channels in the soundbar, plus two upward-firing drivers for height effects, all backed by a wireless subwoofer. Those upward-firing drivers are the key to Dolby Atmos – they bounce sound off your ceiling to create the illusion of overhead audio.

Polk's VoiceAdjust technology is more sophisticated than typical dialogue enhancement. Rather than just boosting certain frequencies, it can isolate and enhance vocal elements while leaving the rest of the soundtrack untouched. During complex action scenes with explosions, music, and dialogue all happening simultaneously, this makes a noticeable difference in speech intelligibility.

The build quality reflects the higher price point. While the LG is mostly plastic (which isn't necessarily bad), the Polk features a more premium materials mix with better internal bracing to reduce cabinet resonance.

Performance Deep Dive: Where Your Money Goes

Audio Quality and Immersion

This is where the philosophical differences become most apparent. The LG S40T creates what I'd call "enhanced stereo" – it takes your TV's audio and makes it bigger, clearer, and more dynamic, but it's still fundamentally a left-right stereo presentation.

The processing is quite good for the price. LG's virtual surround algorithms can create a surprisingly wide soundstage, making it feel like audio is coming from beyond the physical boundaries of the soundbar. However, it's still virtual processing – you're not getting discrete surround channels or true spatial audio.

The Polk Signa S4, on the other hand, creates genuine three-dimensional audio when fed Dolby Atmos content. I've tested it with scenes from "Top Gun: Maverick" and "Dune," and the difference is immediately apparent. Jet engines don't just get louder as they approach – they actually move through the acoustic space above and around you.

Even with non-Atmos content, the dedicated center channel makes a huge difference. Dialogue comes from a specific point rather than being phantom-imaged between the left and right speakers. This creates better focus and clarity, especially if you're not sitting perfectly centered in front of the TV.

Bass Performance and Room Integration

Both soundbars include wireless subwoofers, but they approach bass differently. The LG's subwoofer is designed to be a good citizen – it provides solid low-end extension without overwhelming smaller rooms. The bass adjustment is fairly basic, but it gets the job done for most content.

The Polk's subwoofer is more sophisticated, with BassAdjust technology that lets you fine-tune the low-frequency response to match your room acoustics. This matters more than you might think. A subwoofer that sounds perfect in a carpeted room with lots of furniture might sound boomy and overwhelming in a room with hardwood floors and minimal furnishings.

In my testing, the Polk's bass integration feels more seamless. The crossover point where the soundbar hands off to the subwoofer is better tuned, creating a more cohesive overall sound signature.

Dialogue Clarity: The Make-or-Break Feature

Here's where things get interesting. Both soundbars prioritize dialogue clarity, but they achieve it differently. The LG's approach is more brute-force – it uses AI processing to identify speech patterns and boost them accordingly. It works well, especially for TV shows and news programming.

The Polk's dedicated center channel is the more elegant solution. Having a discrete driver handling dialogue means voices have their own acoustic space, separate from music and sound effects. Combined with VoiceAdjust processing, this creates exceptional speech intelligibility even during complex audio passages.

During my testing with "The Dark Knight" – notoriously difficult dialogue mixed with explosive action – the Polk maintained better speech clarity throughout the film's most demanding sequences.

Connectivity and Smart Features: Future-Proofing Considerations

The connectivity story reveals each product's target market. The LG S40T covers all the basics: HDMI ARC for TV connection, optical input for older devices, and Bluetooth 5.3 for wireless streaming. The Bluetooth implementation is particularly good, with stable connections and minimal latency.

However, it lacks HDMI eARC, which means it can't handle the highest-quality audio formats from streaming services and 4K Blu-rays. For most users, this won't matter – standard HDMI ARC handles Dolby Digital and DTS just fine. But if you're building a system for the long term, this could become a limitation.

The Polk Signa S4 includes HDMI eARC, positioning it for future audio format support. It can handle uncompressed audio formats that the LG simply can't process. The Bluetooth implementation also supports multiple device pairing – you can have up to eight devices remembered, making it easier to switch between family members' phones and tablets.

Home Theater Integration: The Big Picture

If you're thinking about building a proper home theater setup, these soundbars represent different starting points. The LG is designed to be a complete solution – it'll give you significantly better audio than your TV speakers, and most users will be perfectly happy stopping there.

The Polk feels more like the foundation of a larger system. While it's impressive as a standalone unit, Polk has designed it to potentially integrate with additional speakers down the road. The processing power and connectivity options suggest it could serve as the centerpiece of a more complex audio setup.

For rooms larger than about 250 square feet, the Polk's additional power and more sophisticated driver array become more important. The LG can fill smaller spaces effectively, but it starts to struggle in larger, more open floor plans.

Technical Evolution and Current Context

Both soundbars represent the current state of their respective market segments. The LG shows how much performance you can now get at the entry level – features that would have cost $400+ just a few years ago are now available for under $160.

The Polk represents the democratization of premium audio technology. True Dolby Atmos systems used to require separate components and professional installation. Now you can get genuine object-based audio from a single soundbar.

The timing of these releases is significant. The LG arrived in 2024 as streaming services were pushing higher-quality audio alongside 4K video content. The Polk's 2025 launch coincides with more widespread Dolby Atmos content availability across platforms like Netflix, Disney+, and Apple TV+.

Making Your Decision: Practical Considerations

Choosing between these soundbars comes down to understanding your priorities and usage patterns. The LG S40T is the better choice if you primarily watch TV shows, news, and casual streaming content. Its dialogue enhancement and virtual surround processing will make everything sound significantly better than your TV speakers, and the price point makes it an easy decision.

The Polk Signa S4 makes sense if you regularly watch movies, especially newer releases with Dolby Atmos soundtracks. The immersive audio experience it provides with compatible content is genuinely impressive, and the additional connectivity options provide better long-term flexibility.

Room size is a crucial factor. In spaces under 200 square feet, the LG provides plenty of performance and the Polk might actually be overkill. In larger rooms, the Polk's additional power and more sophisticated driver array become more important.

Consider your content sources too. If you mostly watch broadcast TV and basic streaming, the LG's processing is optimized for that content. If you have a 4K Blu-ray player or subscribe to premium streaming tiers with Atmos content, the Polk will take better advantage of those higher-quality sources.

Your upgrade timeline matters as well. If you see this as a 3-5 year purchase, the LG represents excellent value. If you're planning to keep your soundbar for 7-10 years, the Polk's advanced features and connectivity options provide better future-proofing.

Both soundbars represent solid choices in their respective categories. The LG delivers exceptional value for money, while the Polk provides a genuine taste of premium audio technology at an accessible price point. Your choice should align with how you actually use your entertainment system – and how much you value the enhanced experience that comes with the latest audio technologies.

LG S40T 2.1 Channel Soundbar Deals and Prices

Polk Audio Signa S4 Dolby Atmos Soundbar with Wireless Subwoofer Deals and Prices