Choosing Between Simple and Sophisticated: Fire TV Soundbar Plus vs Denon DHT-S517

If you've ever found yourself straining to hear dialogue during a movie or cranking up the volume just to understand what characters are saying, you're not alone. Modern TVs, despite their impressive picture quality, often have terrible built-in speakers. The pursuit of ultra-thin designs has left little room for proper audio components, making external soundbars practically essential for decent home entertainment.

The soundbar market offers everything from basic audio upgrades to full-fledged home theater replacements. Today we're comparing two fundamentally different approaches: the Amazon Fire TV Soundbar Plus, which prioritizes simplicity and integration, versus the Denon DHT-S517, a more sophisticated system that aims to deliver genuine surround sound. At the time of writing, these represent vastly different price points and performance levels, making the choice between them an interesting study in what you're actually paying for.

Understanding What Makes Soundbars Different

Before diving into specifics, it's worth understanding what separates basic soundbars from more advanced systems. The key differentiator is channel configuration – essentially, how many separate audio streams the system can handle and where those sounds come from.

A traditional stereo system uses two channels (left and right), while most modern content includes additional channels for center dialogue, surround effects, and even overhead sounds. When manufacturers talk about "3.1" or "3.1.2" configurations, they're describing these channel arrangements. The first number represents front channels (left, center, right), the second indicates subwoofer presence, and the third refers to height or overhead channels.

The Fire TV Soundbar Plus uses what's called virtual processing to simulate multiple channels from fewer physical speakers, while the Denon DHT-S517 employs discrete drivers for each channel. This fundamental difference affects everything from dialogue clarity to the immersive quality of movie soundtracks.

The Simple Approach: Amazon's Fire TV Integration

Released in 2023, the Amazon Fire TV Soundbar Plus represents Amazon's attempt to create the most user-friendly soundbar possible. Rather than overwhelming users with complex audio settings, Amazon focused on seamless integration with their Fire TV ecosystem and straightforward operation.

The most distinctive feature isn't actually about sound – it's about control simplicity. When paired with Fire TV devices, you can control both your TV and the Fire TV Soundbar Plus with a single remote. This might seem trivial, but anyone who's juggled multiple remotes while trying to adjust volume during a movie will appreciate the elegance.

The soundbar uses a 3.1-channel configuration, but here's where things get interesting from a technical standpoint. Rather than having three separate physical speakers for left, center, and right channels, the Fire TV Soundbar Plus uses digital signal processing (DSP) to create a virtual center channel. This processing analyzes the audio signal and redirects certain frequencies to create the impression of dialogue coming from the screen's center, even though it's actually coming from left and right drivers.

For bass reproduction, Amazon built a subwoofer directly into the main soundbar housing. This creates a compact, all-in-one solution but necessarily limits how deep and powerful the bass can be. The laws of physics are unforgiving here – larger drivers and enclosures simply move more air and create more impactful low-frequency sound.

The Fire TV Soundbar Plus supports Dolby Atmos, but through virtual processing rather than dedicated height speakers. Dolby Atmos is designed to create three-dimensional sound by adding overhead audio channels to traditional surround sound. When done with physical speakers that fire upward and reflect sound off your ceiling, the effect can be genuinely immersive. Virtual Atmos processing attempts to simulate this using psychoacoustic tricks – essentially fooling your brain into perceiving height that isn't physically there.

The Sophisticated Alternative: Denon's Multi-Component Approach

The Denon DHT-S517, released in 2022, takes a completely different philosophy. Instead of trying to pack everything into one housing, Denon created a two-piece system with a main soundbar and separate wireless subwoofer. This allows each component to be optimized for its specific job.

The technical specifications reveal the sophistication difference immediately. The Denon DHT-S517 features seven individual drivers arranged in a true 3.1.2 configuration. This means dedicated tweeters (small speakers optimized for high frequencies) and midrange drivers for the left and right channels, a separate center channel driver for dialogue, and two upfiring speakers specifically angled to bounce sound off your ceiling for Dolby Atmos effects.

The upfiring speakers deserve special attention because they represent genuine innovation in home audio. Traditional surround sound required speakers placed behind or beside your seating position, which isn't practical for many living rooms. Upfiring speakers solve this by precisely angling sound to reflect off your ceiling, creating the perception of overhead audio without ceiling-mounted speakers. The Denon DHT-S517 positions these drivers at carefully calculated angles to optimize this reflection.

The wireless subwoofer uses a 5.25-inch driver powered by its own 100-watt amplifier. Being wireless doesn't just mean convenience – it allows optimal placement anywhere in your room. Bass frequencies are omnidirectional, meaning you can't easily tell where they're coming from, so the subwoofer can be placed where it sounds best rather than where it's convenient to run cables.

Performance Deep Dive: Where the Differences Matter Most

Dialogue Clarity and Voice Reproduction

Both systems recognize that dialogue intelligibility is crucial, but they approach it differently. The Fire TV Soundbar Plus uses its virtual center channel processing along with dialogue enhancement features that can boost voice frequencies while leaving other sounds unchanged. You can adjust this enhancement across five different levels, allowing fine-tuning for different content types.

The Denon DHT-S517 takes the more direct approach of using an actual center channel driver. This physical separation means dialogue literally comes from a dedicated speaker, typically resulting in clearer, more natural voice reproduction. During action scenes where explosions and music compete with dialogue, having a separate driver focused solely on voices makes a substantial difference.

In my experience testing both systems, the difference is particularly noticeable in movies with dense soundtracks. Films like "Mad Max: Fury Road" or "Dunkirk" layer multiple audio elements – engines, explosions, music, and dialogue – simultaneously. The Denon's physical center channel maintains dialogue clarity even when everything else gets loud, while the Fire TV Soundbar Plus sometimes requires you to choose between clear voices and impactful action sounds.

Bass Response and Low-End Extension

This is where the fundamental design differences become most apparent. The Fire TV Soundbar Plus integrates its bass drivers into the main housing, which creates inherent limitations. The enclosure volume directly affects how deep bass frequencies can extend, and a soundbar housing simply can't match a dedicated subwoofer cabinet.

The Denon's separate subwoofer changes the entire audio experience. During movie scenes with earthquakes, explosions, or deep musical content, the dedicated subwoofer provides the kind of visceral impact that you feel as much as hear. The 100-watt amplifier driving a 5.25-inch woofer in a properly tuned enclosure can reproduce frequencies down to around 50Hz effectively, while the integrated approach of the Fire TV Soundbar Plus typically rolls off around 80-100Hz.

For music listening, this difference is equally significant. Electronic music, hip-hop, and orchestral pieces with deep bass instruments benefit enormously from proper low-frequency extension. The Denon system can reproduce the deep synthesizer notes in Daft Punk's "Random Access Memories" or the full weight of timpani in a classical recording, while the Fire TV Soundbar Plus provides adequate bass for casual listening but lacks the foundation for truly engaging musical reproduction.

Dolby Atmos and Immersive Audio

Both systems support Dolby Atmos, but their implementation approaches create vastly different experiences. The Fire TV Soundbar Plus relies entirely on virtual processing – sophisticated algorithms that manipulate stereo channels to create the impression of height and surround sound. This can work surprisingly well for creating a wider soundstage than traditional stereo, and it's much more forgiving of room acoustics and ceiling height.

The Denon DHT-S517's physical upfiring speakers provide authentic overhead effects when conditions are right. Rain sequences in movies like "Blade Runner 2049" genuinely sound like they're falling from above, and helicopter fly-overs create convincing movement through three-dimensional space. However, this approach requires specific room characteristics – primarily a flat ceiling between 8-10 feet high and appropriate room size for proper acoustic reflection.

I've found the virtual approach of the Fire TV Soundbar Plus works well in smaller rooms or spaces with unusual ceiling configurations, while the Denon's physical approach truly shines in traditionally proportioned living rooms with standard ceiling heights.

Soundstage and Imaging

Soundstage refers to the perceived width and depth of audio reproduction – essentially, how big the sound "feels" and whether you can identify where specific sounds are coming from. The Fire TV Soundbar Plus creates a modest soundstage that extends somewhat beyond its physical boundaries but maintains a relatively compact presentation.

The Denon DHT-S517 produces a significantly more expansive soundstage, with clear stereo separation and the ability to place sounds at specific locations within the listening space. During orchestral recordings, you can often identify the approximate positions of different instrument sections, while movie soundtracks gain a sense of space and depth that makes scenes feel more immersive.

Connectivity and Integration Features

The Fire TV Soundbar Plus prioritizes simplicity with its connectivity options. The single HDMI eARC connection handles both audio from your TV and allows the soundbar to be controlled by your TV remote. For users with Fire TV devices, this integration extends to unified control – one remote manages TV power, volume, and Fire TV navigation seamlessly.

However, the "Fire TV" name is somewhat misleading. Unlike some competitors, this soundbar doesn't include built-in streaming capabilities. It's purely an audio device that works well with Fire TV hardware but doesn't add smart TV functionality on its own.

The Denon DHT-S517 offers more comprehensive connectivity with multiple HDMI inputs, optical digital connections, and analog inputs. This flexibility matters if you have multiple source devices – gaming consoles, Blu-ray players, or streaming devices – that you want to connect directly to the soundbar rather than routing everything through your TV.

Value Considerations and Real-World Performance

At the time of writing, these products occupy different price tiers that reflect their capabilities. The Fire TV Soundbar Plus represents excellent value for users seeking a straightforward upgrade from TV speakers without complexity or component sprawl. It delivers meaningfully better dialogue clarity, some bass improvement, and virtual surround effects at an accessible price point.

The Denon DHT-S517 costs significantly more but provides correspondingly advanced capabilities. The separate subwoofer, physical Dolby Atmos implementation, and superior driver array create a genuinely different audio experience rather than just a louder version of TV sound.

For home theater enthusiasts, the performance gap is substantial. Movie night with the Denon system feels like a mini cinema experience, with clear dialogue, impactful bass, and convincing surround effects. The Fire TV Soundbar Plus makes movies more enjoyable than TV speakers but doesn't transform the experience in the same way.

Making the Right Choice for Your Situation

Choose the Amazon Fire TV Soundbar Plus if you value simplicity above all else. It's ideal for smaller rooms, first-time soundbar buyers, or anyone who primarily watches TV shows rather than action movies. The Fire TV integration is genuinely useful if you're already in Amazon's ecosystem, and the single-component design eliminates placement concerns about subwoofers.

The Fire TV Soundbar Plus also makes sense for apartment dwellers or anyone with space constraints. Its lower-profile design and integrated approach work well when you can't accommodate multiple components or need to keep bass levels reasonable for neighbors.

Select the Denon DHT-S517 if audio quality is your priority and you have the room setup to support it. Medium to large living rooms benefit most from its capabilities, and the separate subwoofer allows optimization for your specific space. Movie enthusiasts will particularly appreciate the authentic Dolby Atmos implementation and powerful bass response.

The Denon system also represents better long-term value if you're building a home theater setup. Its superior performance means you're less likely to want upgrades later, while its comprehensive connectivity supports various source devices as your setup evolves.

Ultimately, both products succeed at their intended purposes. The Fire TV Soundbar Plus transforms terrible TV audio into acceptable sound with minimal fuss, while the Denon DHT-S517 creates a genuine home theater audio experience. Your choice should align with your expectations, room characteristics, and how much the cinematic audio experience matters to your entertainment enjoyment.

Amazon Fire TV Soundbar Plus Deals and Prices

Denon DHT-S517 Soundbar with Wireless Subwoofer Deals and Prices