Car speakers have remained unchanged for a century: paper cones pushing air, coils spinning around magnets, woofers pumping bass from a fixed point. It's an effective, yet honest system: the sound comes from where the speaker is, period. Warwick Acoustics he just showed that things can be done differently.
The British company (the one that made electrostatic headphones sold for 50.000 dollars) presents One-millimeter-thick automotive speakers, without magnets or rare earths, that weigh 90% less than traditional speakersBut the important fact is something else: they generate "planar" sound waves that the brain interprets as coming from further away. To be precise, up to thirty meters in perceived distance. In practice: turn on the music in a five-square-meter cabin and your ear will make you feel like you're in a three-hundred-seat theater. The first model will debut in 2026 on an as yet unannounced luxury car.
How does a speaker that has no speaker work?
A traditional loudspeaker works, roughly, by analogy with muscles: there's a membrane (the cone), an electric coil that acts as a tendon, and a permanent magnet that acts as a bone. Current flows, the coil moves, and the cone pushes the air. It's a mechanical, heavy, and energy-intensive system.
Un electrostatic speaker It works by electrical repulsion. The diaphragm (a very thin layer of conductive plastic) is suspended between two perforated metal grids called "stators." When the audio signal passes through the stators, it creates a changing electrostatic field. The electrically charged diaphragm is repelled or attracted by the stators, and moves. It makes a sound.
Warwick panels measure 1 millimeter thick for the diaphragm alone, 12 millimeters with the complete housing. Compared to the 50-80 millimeters of a traditional dynamic speaker.
They weigh 90% less. They contain no neodymium, dysprosium, or other rare earth elements. They consume 90% less energy. They are 100% recyclable by mass.
The advantage? No mass to move (the diaphragm is very light), no magnet to power, no mechanical inertia. The system's response is snapshot. A bit like the difference between moving a heavy curtain with a rope and making a soap bubble vibrate with your breath. Poetry, right?
The Planar Wave Trick
When a traditional cone pushes air, it generates spherical sound waves: they start from a point and expand in all directions, like concentric circles in water. The brain can recognize this shape and locate the source precisely. An electrostatic diaphragm, on the other hand, generates planar waves: almost flat, as if the sound were emanating from an entire wall instead of a single point. These waves flatten further as they travel through the air. And here the perceptual deception kicks in.
The human ear interprets very flattened waves as sounds that have traveled a long way, because Pure spherical waves naturally flatten out after tens of meters of propagationIf you hear a flat wave thirty centimeters from your ear, your brain deduces that it originated much further away. The result: you listen to music with the speakers half a meter away and perceive it as if it were coming from thirty meters away. The soundstage (the perceived “sound scene”) expands by a factor of ten.
Strategic positioning
Warwick leverages another advantage of flat panels: they can fit anywhere. Traditional speakers require volume (the sound box), space (they need to "breathe"), and orientation (they point in a specific direction). Electrostatic panels they are as thin as aluminum foil, they can be modelled into different shapes, and integrate almost invisibly into the surfaces of the passenger compartment.
Where could they fit? With a little imagination, I can easily imagine them being integrated into the pillars, the headliner, or the door panels above the handle. This will create an even stronger psychoacoustic effect: the sound comes from above, like in a concert hall where the waves reflected from the ceiling contribute to the spatial effect.
Ian Hubbard, CCO of Warwick, explains that The speed and accuracy of electrostatic speakers also reduce the need for digital sound manipulation, allowing for smaller DSP processors to be built, costly, and powered. Maybe they'd make autotune unnecessary... No, huh?
Bonus for electric cars: the Warwick system consumes up to 90% less compared to conventional audio systems. On a premium EV with a 100 kWh battery, this translates to in a 5% saving on the vehicle's total energy consumption: Up to 32 km of additional range per charge. That's the equivalent of approximately 5 kWh of battery capacity you don't need to buy.
Not to mention the rare earth problem
Premium luxury car speakers use neodymium and dysprosium magnets. These elements are mainly mined in China, with processes that generate 2000 times more toxic waste than the weight of the refined material. In a high-end EV, Up to 30% of the total rare earth content comes from the audio system, no joke. Warwick completely eliminates this problem: zero magnets, zero rare earths, 100% recyclable materials by mass. Ben Lisle, CTO of Warwick:
"Our technology doesn't just eliminate rare earth elements. We use 100% upcycled and easily recyclable materials in production, resulting in a highly sustainable final product that's easy to disassemble at the end of its life."
When will the “invisible” speaker arrive (and how much will it cost)?
Warwick has signed its first series production contract with an unannounced global luxury car manufacturer. The electrostatic audio systems will debut, as mentioned, in 2026. The company opened a new production facility at the MIRA Technology Park (Warwickshire) in October 2024. with tenfold increased production capacity and 100% power supply from renewable sources.
The price? Undisclosed, but considering that Warwick headphones start at $50.000, it's reasonable to expect the automotive system will initially be a (very expensive) option on premium models. Likely the Mercedes EQS, BMW i7, or the top-of-the-line Porsche Taycan. The technology is ready for automotive production: seven patent families granted, two pending. Mike GrantWarwick's CEO is already gloating:
“We are bringing a revolution to in-car audio, moving away from the traditional speaker format whose fundamental principles have not changed in nearly a hundred years.”
I'm left with a wicked yet optimistic question: if twelve millimeters of electrostatic panel are enough to fool the human ear and make a car sound as big as a cathedral, how long will it take for Chinese manufacturers to copy the technology and sell it on a €30.000 BYD?
Answer: Less than what is needed to dispose of all the rare earths we are still mining for today’s speakers.
