Sharp HT-SBW320 Review: Extreme Slimness at the Cost of Immersion

Sharp, a long-standing player in the electronics market, focuses on subtlety with the HT-SBW320. Instead of emphasizing sheer power, the brand innovates with a compact, affordable soundbar. This soundbar with a subwoofer stands out due to its dimensions and a price tag under 200 euros. By incorporating Dolby Atmos and DTS:X features into its specs, it relies on digital signal processing (DSP) to create immersive effects without the need for dedicated speakers.

The bar aims to replace the often disappointing audio systems of modern televisions. However, its ultra-compact form factor requires bold technical choices, especially regarding the size of the drivers. And this is not without consequences for sound performance…

Sharp HT-SBW320Technical Specifications

This review was conducted with a soundbar loaned by Sharp.

Sharp HT-SBW320Design: The Undeniable Charm

The Sharp HT-SBW320 features a refined, modern yet classic silhouette. With its slender dimensions — only 65 cm wide by 7.3 cm deep and notably less than 4 cm tall — it easily positions itself as one of the thinnest soundbars in its category. It literally fits in one hand. Its aesthetics are immediately appealing. The finish, which combines well-crafted plastics and acoustic fabric on the front and top, inspires confidence.

Designed to fit under any television, even those with very low feet like some Sony or LG OLED panels, the bar does not block either the infrared sensor or the lower part of the image. This provides undeniable visual comfort. The display of information is discreetly handled through an LED screen hidden behind the fabric. Minimalist, it remains visible without cluttering the field of vision in dim light.

Meanwhile, the wireless subwoofer features a more traditional design. Narrow and tall, it ideally fits along a TV stand. Its finish remains standard (painted MDF) but unobtrusive.

Sharp HT-SBW320Connectivity: More Than Just the Bare Minimum

Despite its small size which imposes severe integration constraints, Sharp has not skimped on functionality and offers surprisingly comprehensive connectivity at the back of the device.

An easily accessible compartment houses the essentials. It includes a single HDMI port compatible with eARC (Enhanced Audio Return Channel), which ensures the retrieval of TV sound in its highest quality. In the absence of a second HDMI port, you will need to connect your video sources directly to the TV or projector.

In addition, there is a digital optical input for capturing sound from older TVs, a 3.5 mm auxiliary jack input, and a USB port for playing audio files.

For wireless options, Sharp has installed a Bluetooth 4.2 receiver to stream music from a smartphone simply. However, the total lack of Wi-Fi limits access to modern, comfortable features such as Spotify Connect, AirPlay 2, or Chromecast. Thus, this bar depends exclusively on physical sources or point-to-point Bluetooth connections for any audio content.

Sharp HT-SBW320Internal Design: The Challenges of Miniaturization

The internal architecture presents a complex equation for acoustic engineers. Within a chassis just 3.6 cm tall, integrating traditional speakers is virtually impossible. Therefore, Sharp uses elliptical speakers approximately 10×3 cm for low and mid-range sounds, combined with two approximately 3 cm tweeters to emit the finest sounds. This is good news, as the presence of tweeters guarantees a more precise sound.

However, such small drivers physically cannot produce a very high sound volume or deep bass frequencies, which are imperative in home cinema or generally for fully enjoying a movie or series.

To compensate for this shortcoming, the wireless subwoofer takes over, with a 13 cm driver loaded in a bass-reflex configuration.

In summary, we have a strict stereo setup and in these conditions, it is impossible to generate an enveloping surround atmosphere (effects from behind the listener), nor vertically.

Sharp HT-SBW320A Remote but No App

Don’t look for a sophisticated mobile app on the App Store or Play Store: Sharp has bypassed network connectivity. Management is done exclusively via the remote control provided or the few physical buttons on the top of the bar.

The remote, although basic, allows switching between different sources (HDMI, Bluetooth, USB for audio files), adjusting the volume, and selecting a few predefined equalization modes.

On the plus side, it remains possible to separately adjust the bass and treble levels. It’s better than nothing for customizing the output.

Without an onboard calibration system, if the subwoofer seems too recessed or, conversely, too prominent, you’ll need to move it to find its optimal placement.

Sharp HT-SBW320Audio: Effective Stereo but No Spatial Magic

Upon listening, and based on microphone measurements, the Sharp HT-SBW320 delivers an honest performance for its size, but it is essential to temper the marketing promises, notably the 360 W advertised. The maximum sound level peaks at about 90 dB, which is adequate, but it is really the result of deploying just about fifty Watts at most.

Sound Signature and Power

An analysis of the frequency response helps to better understand the behavior of the speaker and subwoofer.

The first observation from the curve: the overall balance is rather pleasant. The subwoofer does its job, but with clear limits. The energy peak is around 70 Hz. This translates into a bass that has impact, “punch,” which is satisfying in action scenes. However, the subwoofer does not go very low. The curve drops rapidly below 50 Hz. Consequently, do not expect to shake the walls with infra-bass layers; the energy simply isn’t there.

Positive point: the comparison between the response at moderate volume and that at full power shows excellent linearity. The subwoofer does not collapse when the volume is turned up; the system remains consistent. I measured a maximum sound pressure level (SPL) of about 90 dB at one meter. It’s loud, plenty enough for dynamic cinema listening in a standard living room. However, it is better to use the bar at moderate levels, as it tends to emit a somewhat harsh sound at high volumes.

Surround: A 100% Frontal Rendering

The sound stage widens slightly beyond the physical limits of the bar, and offers a pleasant, well-defined stereo image. However, do not expect any enveloping surround effects. The sound remains irremediably anchored to the front of the room.

Despite activating the “Surround” mode via the remote control, no sound will come as a surprise from the sides or behind the sofa. The absence of side speakers is noticeable. It’s a good stereo, wide and clean, but the Sharp HT-SBW320 does not constitute a home cinema system in the enveloping sense of the term.

Dolby Atmos and DTS:X: Decoding Is Not Reproduction

It is essential to clarify any misunderstandings. Although the specs sheet mentions compatibility with Dolby Atmos and DTS:X, this simply means that the digital stream is supported and decoded with mixing of height channels and 3D objects to fit into simple stereo. There is almost no verticalization of the sound. Effects meant to come from the ceiling remain glued to the screen. There is no deception, as decoding is real, but the immersive experience promised by these formats is not acoustically reproduced.

Dialogues: The Strong Point

If there’s one area where the Sharp HT-SBW320 excels, it’s the intelligibility of dialogues. The intentional boost around 300 Hz (low-midrange) gives voices a solid foundation and clarity.

Dialogues stand out from the soundtrack, even during scenes loaded with sound effects. For news broadcasts, documentaries, or talk shows, the listening comfort is very good. However, be aware, the highs are slightly recessed, and some harshness in the high-mids can set in at very high volumes.

Sharp HT-SBW320Price and Availability

Offered at 199 euros, the Sharp HT-SBW320 is positioned against entry-level bars from Samsung (Series B), Sony (HT-S400), or JBL. While these competitors are often more voluminous and less graceful, they sometimes offer slightly better acoustic coherence thanks to larger resonance chambers.