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Sonos Arc Ultra soundbar review: A powerful all-in-one Dolby Atmos home theater system
The Sonos Arc Ultra is presented as a significant advancement in home theater soundbars, offering an immersive all-in-one Dolby Atmos experience. This soundbar is designed to simulate a comprehensive multi-speaker setup, delivering strong bass and convincing overhead audio effects from a single unit. It represents a substantial upgrade over its predecessor, the Sonos Arc, primarily through enhanced clarity and improved low-frequency performance. This improvement is attributed to Sonos' new Sound Motion technology, which integrates a powerful four-motor woofer into a compact design, allowing for deeper bass without increasing the soundbar's physical size.
The re-engineered driver array of the Arc Ultra is a key highlight, with 14 drivers compared to the original Arc's 11. This configuration allows for additional tweeters and fewer midrange woofers, optimizing sound output for deeper bass, wider soundstage, and improved presence. The article emphasizes that the Arc Ultra, even as a standalone unit, provides a robust home theater solution, capable of 9.1.4-channel Dolby Atmos playback. This setup directs nine ear-level audio channels and four overhead channels, creating an encompassing sound experience.
While the soundbar excels in creating a wide and tall spatial audio effect, it does not perfectly simulate rear sound effects, a common challenge for single-unit soundbars. However, dialogue clarity is exceptional, making the Advanced Speech Enhancement feature largely unnecessary. Beyond movie performance, the Arc Ultra also delivers impressive sound quality for music across various genres, with clear mids and powerful low-end resonance, further boosted by the Sound Motion woofer.
For users seeking an even more immersive experience, the Arc Ultra can be paired with additional Sonos speakers. Connecting a Sonos Sub 4 and two Sonos Era 300 speakers as rears significantly enhances the home theater setup. The Sub 4 extends the bass frequency down to 25Hz, while the Era 300 speakers provide genuine rear audio and additional up-firing drivers for Dolby Atmos effects, effectively filling the gaps in simulated surround sound.
Design-wise, the Arc Ultra features subtle improvements, including Bluetooth connectivity, a repositioned touch control strip for easier cleaning, and a slightly shorter profile to reduce obstruction of TV screens. The inclusion of a configurable Advanced Speech Enhancement mode is another new feature. However, some limitations persist from the original Arc, such as a single HDMI eARC connection, requiring an adapter for optical connections, and the absence of DTS:X support. Additionally, Google Assistant support, present in the original Arc, has been removed in favor of Alexa and Sonos Voice Control. The Sonos app, despite undergoing a revamp and experiencing initial buggy performance, is noted to be improving, with the setup process for the Arc Ultra being straightforward, although some minor audio format and speaker switching issues were encountered.
In conclusion, the Sonos Arc Ultra is presented as an excellent choice for individuals desiring a powerful, space-saving, all-in-one Dolby Atmos home theater speaker. Its Sound Motion technology provides a significant improvement in bass and spatial effects within a similar footprint to its predecessor. Despite its premium price and lack of DTS:X support, its immersive capabilities and convenience are highlighted as strong selling points for movie and music enthusiasts with sufficient budget.
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