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Haixin TV obsessed with "super picture quality" produces sound quality black technology!
When it comes to Hisense TVs, many people immediately think of "ULED super quality." And indeed, after years of independent research and development, Hisense has positioned itself at the forefront of TV quality in China. The high-end MU9600 series even rivals international brands like Sony and Samsung, showcasing the brand's top-tier performance. However, when it comes to audio quality, there hasn't been much excitement—something that isn't unique to Hisense. In the era of ultra-slim TVs, sound quality has become a common weakness across the entire industry.
But things are changing. Hisense's newly launched ULED Ultra HD TV, the NU7700, introduces a groundbreaking technology called "Air Sound Field," which promises to deliver powerful bass without compromising the slim design. How does this technology work? What makes it so special? Let’s take a closer look.
Traditional TVs typically use phase-inverted speakers, also known as bass reflex speakers. These speakers have a port or hole on the back panel that allows sound waves from the rear to pass through and combine with the front sound, enhancing low-frequency output. This design made it possible to achieve good bass in compact devices. However, as TVs became thinner, the space for these speakers was reduced, leading to a significant drop in bass performance. That's why modern ultra-slim LCD TVs often lack the rich, deep sound of older models.
To solve this issue, some manufacturers have opted for external soundbars. While this approach can improve audio quality across all frequency ranges, it compromises the sleek design of the TV and adds extra cables, making the setup more complicated.
So, is it still possible to achieve great bass with built-in speakers? Hisense's NU7700 says yes. The model features a dual-mode resonance ultrasonic sealed soundbox, a type of closed-back speaker. Unlike traditional phase-inverted designs, closed-back speakers are fully enclosed except for the driver opening. This structure produces cleaner, more accurate bass and allows for smaller speaker enclosures.
To maximize bass performance within the limited space, Hisense added two passive radiators. These are not active drivers but help enhance bass by vibrating in response to the movement of the main speaker. This system allows the bass to be more powerful and deeper than conventional setups. According to the National Digital Audio, Video and Multimedia Product Quality Supervision and Inspection Center, the bass range of the NU7700 extends down to 60Hz—double the standard 120Hz—while using only 1/10 of the volume. This results in a richer, more immersive audio experience.
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