Choosing Between Budget and Premium Soundbars: A Deep Dive Into Two Popular Options

When your TV's built-in speakers just aren't cutting it anymore, you're probably looking at soundbars as the obvious solution. They promise better audio without the complexity of a full surround sound system, but the range of options can be overwhelming. Today, I'm comparing two soundbars that represent very different approaches to solving the same problem: the Polk Audio Signa S2 and the LG S70TR.

At the time of writing, these products sit roughly $200 apart in price, which might seem like a small difference until you realize it represents fundamentally different philosophies about home audio. One focuses on doing the basics exceptionally well, while the other aims to recreate a true theater experience in your living room.

Understanding What You're Actually Buying

Before diving into specifics, let's talk about what soundbars actually do and why the differences matter. Think of your TV's built-in speakers as the audio equivalent of a smartphone camera from 2010 – technically functional, but severely limited by size constraints. Soundbars solve this by spreading larger drivers across a wider space and adding a separate subwoofer for low-frequency sounds (bass) that small speakers simply cannot produce.

The channel configuration numbers you see – like 2.1 or 5.1.1 – tell you exactly what you're getting. The first number represents left and right speakers, the second is surround speakers (left and right rear), and the third is overhead or "height" speakers. The ".1" always refers to the subwoofer. So a 2.1 system like the Polk Signa S2 has left, right, and subwoofer, while the LG S70TR's 5.1.1 setup includes left, right, center, two rear surround speakers, one overhead speaker, and a subwoofer.

The Tale of Two Approaches

Polk Audio Signa S2: Refined Simplicity

Released around 2021, the Polk Audio Signa S2 represents what I'd call the "refined basics" approach to soundbar design. Polk built their reputation on making good speakers accessible to regular people, and this philosophy shows clearly in the S2. Instead of cramming every possible feature into the package, they focused on solving the most common TV audio problems: muddy dialogue and weak bass.

The star feature here is VoiceAdjust technology, which is essentially a smart equalizer (sound adjustment system) that can boost voice frequencies while keeping other sounds balanced. This might seem basic, but it addresses the number one complaint about TV audio – not being able to understand what people are saying, especially in movies with loud soundtracks or shows with background noise.

The Signa S2 uses what audio engineers call a "V-shaped" sound signature. This means it emphasizes both bass (low sounds) and treble (high sounds) while keeping midrange frequencies more neutral. For most TV content, this actually works well because it makes explosions more impactful and dialogue clearer, though music purists might find it a bit artificial-sounding.

LG S70TR: The Complete Theater Experience

The LG S70TR, released in 2024, takes the opposite approach. Instead of refining the basics, LG packed this system with cutting-edge technology aimed at recreating a genuine surround sound experience. The key difference is those physical rear speakers – actual separate speakers that sit behind your listening position.

This isn't just marketing fluff. When a movie soundtrack places a helicopter flying overhead, the LG system can actually make that sound come from above and behind you using its dedicated speakers. The Polk S2, no matter how clever its processing, can only create the illusion of surround sound through psychoacoustic tricks (basically fooling your brain about where sounds are coming from).

The LG S70TR also supports Dolby Atmos, which is a newer audio format that treats sounds as objects moving through three-dimensional space rather than just assigning them to specific speakers. Think of it like the difference between a flat painting and a 3D sculpture – both can be beautiful, but one gives you a more immersive experience.

Performance Deep Dive: Where It Really Matters

Dialogue Clarity: The Make-or-Break Factor

Having tested both systems extensively, dialogue performance is where your daily satisfaction lives or dies. The Polk Signa S2 excels here in ways that surprised me. Despite lacking a dedicated center channel (the speaker specifically designed for dialogue), Polk's VoiceAdjust technology genuinely works. I found myself catching mumbled lines in British crime dramas that I'd previously missed, even with my TV's volume cranked up.

The LG S70TR takes a different approach with its up-firing center channel and Clear Voice Plus technology. This system analyzes the audio signal in real-time and automatically adjusts the sound balance. When it detects high vocal content, it reduces bass frequencies that can mask speech. In practice, this means less manual adjustment – the system handles optimization automatically.

From a pure technical standpoint, the LG system should perform better due to its dedicated center speaker. However, in smaller rooms where you're sitting relatively close to the soundbar, the Polk's solution proves surprisingly effective and requires less setup complexity.

Bass Performance: Size and Physics Matter

This is where the price difference becomes immediately apparent. The Polk Signa S2's subwoofer uses a 5.25-inch driver in a compact enclosure designed for apartment living. It provides enough low-end punch to make action movies more engaging without overwhelming smaller spaces or angry neighbors.

The LG S70TR's subwoofer features a larger 7-inch driver with significantly more power behind it. The difference isn't just about volume – larger drivers can reproduce lower frequencies more accurately. This translates to more realistic explosions, deeper musical bass lines, and that theater-like rumble that makes you feel like you're part of the action.

In my testing, the Polk system reached its limits around 50% volume in medium-sized rooms, while the LG setup maintained clean, controlled bass even at higher volumes. If you're someone who likes to feel the bass rather than just hear it, the LG system delivers a more satisfying experience.

Surround Sound Performance: Virtual vs. Physical

Here's where we see the biggest philosophical difference between these systems. The Polk Signa S2 uses digital signal processing (DSP) to create virtual surround effects. This technology analyzes stereo or surround sound content and uses timing, phase, and frequency tricks to make sounds appear to come from beside or behind you, even though all the speakers are in front.

Virtual surround can be surprisingly effective in the right conditions – specifically, when you're sitting in the sweet spot (usually 8-12 feet directly in front of the soundbar) in a room with good acoustics. However, it breaks down when you move around, have multiple listeners, or the room is too large or acoustically challenging.

The LG S70TR eliminates these compromises with actual wireless rear speakers. When a movie places gunfire to your left, you hear it from your left because there's literally a speaker there. This physical placement creates a much more stable and convincing surround field that works for multiple listeners and doesn't disappear when you get up to grab snacks.

The Dolby Atmos capability adds another dimension – literally. Height effects like rain, aircraft, or ceiling fans come from above your listening position. It's the kind of immersive experience that makes you notice sound details you never caught before, like the subtle ambient sounds that create atmosphere in well-mixed films.

Gaming Performance: The Modern Consideration

Gaming performance has become increasingly important as soundbars connect to modern consoles. The Polk Signa S2 handles gaming adequately but offers no special optimizations. It's perfectly fine for casual gaming but won't give competitive players any advantages.

The LG S70TR includes dedicated gaming features that matter for serious players. Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) support up to 120Hz means the audio stays perfectly synchronized with fast-paced visuals. The sub-15ms audio latency ensures that gunshots, footsteps, and other crucial audio cues reach your ears without delay.

For competitive gaming, this can be the difference between hearing an enemy approach and getting eliminated. The surround sound also provides better spatial awareness – you can more accurately pinpoint where sounds are coming from in games like Call of Duty or Fortnite.

Smart Features and Future-Proofing

The Polk Signa S2 keeps things simple with basic Bluetooth connectivity and standard sound modes (Movie, Music, Night). There's no app, no voice assistant integration, and no advanced customization. For many users, this simplicity is actually a feature – it just works without requiring you to learn new interfaces or worry about software updates.

The LG S70TR embraces the smart home era with extensive app control, voice assistant compatibility, and features like WOW Orchestra that syncs with compatible LG TVs to use both the TV's speakers and soundbar simultaneously. The AI Sound Pro feature continuously analyzes content and adjusts settings automatically.

This technological sophistication comes with trade-offs. More features mean more potential points of failure and a steeper learning curve. However, it also means the system can improve over time through firmware updates and adapt to new audio formats as they emerge.

Room Size and Placement Reality Check

Your room significantly impacts which system makes sense. In apartments or smaller rooms (under 150 square feet), the Polk Signa S2 often provides better value. Its virtual surround processing works well at closer distances, the compact subwoofer won't overpower the space, and the simpler setup means less clutter.

For medium to large rooms (150+ square feet), the LG S70TR's physical rear speakers become increasingly valuable. Virtual surround effects weaken with distance, but actual speakers maintain their effectiveness regardless of room size. The more powerful subwoofer also helps fill larger spaces without strain.

The LG system does require more planning. You'll need to position the wireless rear speakers properly – typically 2-3 feet behind your main listening position and slightly above ear level. The subwoofer also benefits from corner placement to maximize bass response. This complexity pays dividends in performance but isn't always practical in every living situation.

Value Proposition Analysis

At the time of writing, the Polk Signa S2 represents exceptional value in the budget soundbar category. You're getting dramatic improvements over TV speakers with minimal complexity and cost. The dialogue clarity alone justifies the investment for most casual viewers.

The LG S70TR, despite costing roughly double, actually provides better value per channel when you consider you're getting seven individual speakers plus a subwoofer versus the Polk's two speakers plus subwoofer. The additional features like Dolby Atmos, gaming optimizations, and smart home integration add significant value for users who will utilize them.

The question becomes whether you'll use enough of the LG system's capabilities to justify the additional investment. If you primarily watch news and sitcoms in a small room, probably not. If you're a movie enthusiast with a dedicated viewing space, absolutely.

Making the Right Choice for Your Situation

Choose the Polk Audio Signa S2 if you're looking to solve basic TV audio problems without complications. It's perfect for renters who can't install rear speakers, apartment dwellers concerned about noise, or anyone who wants significant audio improvement with minimal investment and setup complexity. The dialogue clarity makes it particularly well-suited for viewers who prioritize understanding every word over cinematic immersion.

The LG S70TR makes sense when you want to recreate the theater experience at home. It's ideal for dedicated movie watchers, serious gamers, or anyone with a medium-to-large room where virtual surround processing isn't sufficient. The investment pays off in long-term satisfaction and the system's ability to grow with your needs.

The Technology Timeline Perspective

Since the Polk S2's 2021 release, soundbar technology has evolved significantly. The LG S70TR's 2024 launch timing allows it to incorporate advances in wireless technology, AI-powered audio processing, and gaming optimizations that weren't available or affordable when the Polk was designed.

This doesn't make the Polk system obsolete – its core mission of improving TV audio remains as relevant as ever. However, it does mean the LG system is better positioned for future content formats and use cases we haven't fully embraced yet.

Final Thoughts

Both soundbars succeed at their intended missions, but those missions are quite different. The Polk Audio Signa S2 democratizes good TV audio – it makes significant improvements accessible to almost everyone regardless of budget, space, or technical comfort level. The LG S70TR creates a pathway to genuine home theater audio without requiring professional installation or audiophile-level complexity.

Your choice should align with your priorities, space, and viewing habits. There's no wrong answer here, just different solutions for different needs. The beauty of today's soundbar market is that both approaches can coexist, serving their respective audiences exceptionally well.

The most important thing is moving beyond your TV's built-in speakers. Whether you choose refined simplicity or immersive complexity, either path will transform your viewing experience in ways that make the investment worthwhile.

Polk Audio Signa S2 Sound Bar with Wireless Subwoofer Deals and Prices

LG S70TR 5.1.1 Channel Soundbar with Dolby Atmos and WOW Orchestra Soundbar Deals and Prices