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Introducing SLAM™
Symmetric Linear Acoustic Modulator
At Audeze, we know bass. Good bass is difficult to achieve, great bass more so, and great bass from electrostatic headphones? That’s something nobody perfected until now. Introducing our patent-pending SLAM technology, designed to revolutionize headphone bass performance.
To create dynamic, controlled bass (the kind that hits with precision and depth), you need two critical components: a solid seal and precisely calibrated tension. We've already mastered driver control through our groundbreaking Uniforce™ and Fluxor™ technologies, but great bass demands more.
The Challenge
A tight seal is crucial for deep bass, but it also exerts additional pressure on ultra-thin diaphragms. While less tension may enhance bass, it can lead to issues like the diaphragm sticking to the stator, or require spacing the stators further apart, reducing efficiency. Balancing a perfect seal, maintaining optimal tension, and delivering powerful bass while preserving driver reliability is no small feat—it's an engineering paradox.
Paradox Solved
Our research team realized a solution: what if a pressure relieving mechanism could also acoustically modulate and enhance low frequencies? With SLAM, we maintain a perfect seal and diaphragm tension, while simultaneously improving bass performance.
SLAM incorporates precisely engineered channels seamlessly integrated into the ring that connects the earpads to the drivers. Each channel’s length, cross-section, and shape are meticulously tuned through advanced simulations, precision measurements, and critical listening to achieve the ideal low-frequency response.
These acoustic channels relieve pressure buildup and acoustically modulate the low-frequency response, smoothly boosting bass, similar to adding a gentle low-frequency shelf. The result is significant bass enhancement, 6 dB or more extending as deep as 10 Hz.
A proper seal between earcups and ears inherently creates increased pressure between the ear and diaphragm. Consequently, the diaphragm faces greater resistance when compressing air toward the ear compared to when moving away.
SLAM resolves this issue by allowing controlled pressure equalization between the diaphragm and ear area, ensuring fully symmetric and uniform forces regardless of diaphragm direction. This linearized force significantly reduces distortion and improves transparency, adding openness and clarity to the soundstage.
The new CRBN² is the first headphone in our lineup to feature SLAM, delivering vividly holographic spatial detail and the most powerful bass of any electrostatic headphone.
