French acoustic engineering specialist Devialet and DENZA, the premium brand under BYD Group, have unveiled their latest in-car audio collaboration at the Paris Motor Show 2026. The all-electric DENZA Z supercar is the first vehicle from the marque to carry Devialet's new LFE Box, a patented low-frequency audio architecture that the two companies co-developed from the ground up.
The headline figure is a 13-speaker high-fidelity system, but the more interesting engineering sits in a single sealed box at the centre of the car.
What the LFE Box actually does
LFE stands for Low-Frequency Extension Box. It is a sealed enclosure integrated into the heart of the centre console, housing two woofers in a push-push configuration, which means they move in synchronised, opposing directions. The design is derived from the architecture of Devialet's Phantom Ultimate speaker.
Centralising the bass in one box, rather than spreading subwoofers around the cabin, is meant to balance the sound evenly between the left and right seats and cancel out the mechanical vibrations that are normally audible when a woofer is working hard. Devialet says this is the first time it has run an end-to-end co-development process for a car, covering design, material selection, acoustic simulation and assembly across all three DENZA Z versions: the Spider, the Racing and the Coupe.
There is a practical payoff beyond sound quality. According to Devialet, the LFE Box removes five bulky traditional components, including a 15-litre boot subwoofer and door-mounted woofers. The weight saving helps preserve the electric car's driving range and frees up door and cabin space.
The 13-speaker system
The full setup pairs Devialet's processing with custom hardware. It uses SAM (Speaker Active Matching), a signal-processing algorithm that models how each speaker behaves in real time and adjusts amplitude and phase to extend the low-frequency response while protecting the drivers from thermal and mechanical stress. Devialet SPACE spatialisation, combined with Dolby Atmos and roof-mounted speakers, is designed to turn the cabin into a three-dimensional soundstage. A Central Acoustic Sphere set into the dashboard, borrowed from the Devialet Dione soundbar, projects voices directly towards passengers.
Why it matters for Malaysia
DENZA is already a familiar name to Malaysian buyers through BYD, which brought the brand's DENZA B8 DMO super hybrid SUV to Malaysia and continues to expand its BYD and DENZA dealer network with partners such as Sime Motors. The DENZA Z supercar and its Devialet system were shown as a global reveal in Paris, and the companies have not confirmed a Malaysian launch or price. For now it signals where premium in-car audio is heading: fewer, smarter components doing more, with the acoustic brains that once lived in a home speaker now engineered into the car itself.
Images courtesy of Devialet and DENZA.
