Denon DHT-S517 Review: Atmos and Sub for Less

Who Should Buy It

Key Specifications

Overview

The Denon DHT-S517 is a lower mid range Dolby Atmos soundbar sold with a wireless subwoofer. The listing positions it as an upgrade for TV audio, with a driver array that includes two one inch tweeters, two 4.7 by 1.6 inch midrange drivers, one one inch center channel driver, and two up firing speakers. Those drivers feed a three front channel plus two height channel layout on paper, and the wireless sub handles the low end.

The package competes against soundbars such as the Sonos Beam Gen 2, Bose Smart Soundbar 600, and Samsung HW-Q600C. The Denon includes a subwoofer and up firing drivers in the box, which is not always the case in this class. However, the listing does not mention Wi-Fi streaming or a companion app, so buyers should approach those omissions with clear expectations.

Denon leans on its long history in audio and Japanese precision as a selling point. While those names do not guarantee performance, they give the DHT-S517 a degree of brand credibility. The published feature set suggests a straightforward TV soundbar rather than a full smart platform.

Sound Quality

The specified driver array is more detailed than many budget bars. Two tweeters and two midrange drivers handle left and right duties, while a dedicated center driver supports dialogue. The two up firing drivers are meant to create the height layer for Dolby Atmos content. The listing does not publish total wattage or frequency response, so output headroom and tonal balance remain open questions.

Denon highlights a Dialogue Enhancer as a key feature. With three front channels and a center driver, voiced content should receive dedicated attention. The listing claims voices stay crisp and clear even during loud scenes. That focus on intelligibility is useful for older viewers and for action films with dense soundtracks.

Four sound modes appear in the feature set: Movie, Night, Music, and Pure. Night mode likely compresses dynamics for late listening, while Pure Mode removes surround processing and adjusted characteristics for a cleaner front stage. Buyers do not get a manual EQ, according to the listing.

Surround, Atmos and Audio Formats

Atmos is the main format support mentioned, with the up firing drivers delivering overhead cues. The listing uses the phrase 3D overhead audio, which is a common way to describe height effects without rear surround channels. True object placement overhead will depend on ceiling height and room reflections.

There is no stated DTS or DTS:X support in the listing. Buyers who rely on Blu ray discs with DTS based soundtracks may need to set their player to output PCM or Dolby. The product page also does not describe any virtual surround mode for non Atmos content.

The Soundbar has no rear speakers in the box, so surround effects are limited to front and height channels. That places it behind systems with dedicated surrounds for true 360 degree panning. For small rooms and typical streaming content, the Atmos height layer may still add a sense of space.

Subwoofer and Bass

The included wireless subwoofer is a major value point for the DHT-S517. The listing does not give the subwoofer driver size, amplifier power, or enclosure type. Without that information, bass output can only be judged on the Denon brand reputation and the fact that a dedicated sub is present.

Wireless pairing is mentioned in the feature bullets, which should allow flexible placement away from the bar. The listing says quick setup and includes cables, but does not describe manual bass level control beyond the sound modes. Night Mode may help reduce bass output for apartment dwellers.

The lack of published bass crossover or phase adjustments is common at this price. Buyers should expect a convenience subwoofer rather than a room shaking unit. Still, a separate sub typically improves movie impact compared to a bar alone.

• Wireless subwoofer included with no stated driver size
• Night Mode offers a likely bass reduction for late listening
• Placement is flexible thanks to wireless connection
• No manual bass level control listed
• Subwoofer power output not published

Connectivity and TV Setup

The main connection is HDMI eARC or ARC, with optical input as a fallback. The listing describes one HDMI link for TV audio, but it does not specify whether the bar has extra HDMI inputs for external devices. Owners of older TVs can use the optical connection, though that path may not carry Atmos.

Bluetooth is the only wireless music streaming option listed. There is no mention of Wi-Fi, AirPlay, or Chromecast. That means streaming from a phone or tablet is possible, but multi room audio and higher resolution network playback are not part of this package.

The listing says setup is fast and includes cables and a Quick Start Guide. The bar is designed to be controlled via your existing TV remote over HDMI CEC, which simplifies daily use. However, the listing does not confirm whether Denon includes its own physical remote in the box.

Features, Apps and Voice Control

The DHT-S517 is light on smart features. There is no companion app mentioned for EQ, room correction, or firmware updates. The sound modes and Dialogue Enhancer are the main audio adjustments. Those who prefer adjusting settings on a phone may find this bar too basic.

Voice control and smart assistants are absent from the listing. No built in Alexa, Google Assistant, or Siri support is stated. This is a home theater first device, not a smart speaker. Bluetooth is the only direct streaming input for mobile devices.

Denon Pure Mode is a notable feature for purists. It bypasses surround processing and other adjusted characteristics. That option could appeal to buyers who want as clean a front stage as possible for music or dialogue. But overall, the feature set is focused on TV audio rather than platform integration.

Design and Fit Under a TV

The listing highlights a height under 3 inches to avoid blocking the TV IR sensor. That is helpful for setups where the soundbar sits directly in front of the screen. The bar can be shelf mounted or wall mounted, and a wall mount template or hardware is implied by the listing.

Exact width, depth, weight, and materials are not published in the listing. The language about fit under a TV suggests a low profile design, but buyers with narrow furniture should check measurements from another source before buying. The subwoofer dimensions are also not given.

The front driver layout includes a center channel, which is not always visible in budget soundbars. The grille and finish are not described in detail, so build quality remains unknown. Design is practical and understated based on the published information.

Who Should Buy It

The DHT-S517 fits buyers who want Dolby Atmos and a wireless subwoofer in a single lower mid range purchase. It should appeal to living room viewers upgrading from TV speakers, especially those who value dialogue clarity. The Denon brand name may also matter.

The feature set also works for renters who cannot run rear speaker wires. The wireless sub removes one cable, and the low profile bar is easy to place. However, the lack of Wi-Fi streaming makes it less ideal for whole home audio users.

It is not for buyers who want future proof smart features or an app controlled ecosystem. The soundbar is best understood as a straightforward TV audio upgrade with height effects.

Alternatives Worth Considering

The Sonos Beam Gen 2 is a strong alternative for those who value Wi-Fi, multi room audio, and app based setup, but it does not include a subwoofer at this price tier. The Bose Smart Soundbar 600 offers similar Atmos height drivers and a more polished app, though the separate sub is an additional purchase.

The Samsung HW-Q600C includes a wireless sub and supports Samsung Q Symphony with compatible TVs, and it often competes closely with the Denon on price. The Vizio V Series is a more budget focused option with simpler processing, while the Sony HT-S400 is a 2.1 bar without Atmos.

The Polk Signa S4 comes with Atmos and a wireless sub in a similar design, adding another choice for buyers who want an all in one solution. Each alternative has a different balance of connectivity, app control, and room correction. The Denon Dialogue Enhancer and Pure Mode are its main differentiating audio features.

Verdict

The Denon DHT-S517 is a competent lower mid range Atmos soundbar on paper. The combination of front drivers, up firing speakers, and a wireless sub should deliver a clear upgrade over built in TV audio. Dialogue enhancement is a practical feature for movie and news viewing.

The main limitations are the lack of Wi-Fi, app control, voice assistants, and rear surround speakers. Published specifications are also incomplete, including subwoofer size, power output, and exact dimensions. Buyers should confirm those details before purchasing if room fit or bass output is critical.

For the price tier, the DHT-S517 offers a focused feature set that prioritizes home theater fundamentals over smart features. It is best for buyers who want Atmos and a subwoofer without complex setup or ecosystem lock in.

Strengths and Limitations

Alternatives to Consider

Polk Audio MagniFi Mini AX

Small rooms and space conscious buyers who want Dolby Atmos, a wireless subwoofer, and clear dialogue without a full size soundbar.

Read the Polk Audio MagniFi Mini AX review →

JBL Bar 500MK2-5.1

Buyers who want a high output Dolby Atmos soundbar with a large wireless subwoofer and flexible music streaming.

Read the JBL Bar 500MK2-5.1 review →

Denon DHT-S316

Shoppers who want a simple lower mid-range soundbar with a wireless subwoofer and Bluetooth from a known audio brand without paying for smart features.

Read the Denon DHT-S316 review →

Head-to-Head Comparisons

• Denon DHT-S517 vs Polk Audio MagniFi Mini AX Compare →

Questions Buyers Ask