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Design, skill and great beauty meet in PMC’s latest fact model, the engineering defining the aesthetics and the aesthetics defining the engineering.

Elegant design and advanced engineering come together to produce the ultimate musical listening experience. The top-of-the-range fact model combines new materials, innovative aerodynamic engineering, groundbreaking vibration-cancelling design, cutting-edge cabinets and drivers, PMC's patented Advanced Transmission Line (ATL™) bass-loading technology and state-of-the-art looks to create a loudspeaker which adds no sound of its own to the music it reproduces.

This is why we call it...  ... the loudspeaker you’ll never hear


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    • Fenestria
    • Nov 2019
    • Fenestria
    • Aug 2021
    • Fenestria
    • Nov 21

PMC Labs launch
The 75mm soft-dome mid-range driver covers the key frequencies in instrumental and vocal recordings, ensuring dynamic, beautifully lifelike reproduction. The drivers carefully shaped spun aluminium form was engineered to be acoustically inert, producing stable, pin-sharp imaging without unwanted reflections when teamed with the tweeter in the nest.


Other loudspeakers produce unwanted vibrations in the drivers and cabinet that colour the sound. Just as a shaky camera cannot produce a clearly focused image, these unwanted vibrations reduce the clarity and precision of the sonic imaging. With fenestria, such unwanted resonances and unnatural colouration are engineered out of the design, leaving nothing but music.

Drive Unit


The nest’s minimal, sculpted form is decoupled from the cabinet, connecting with it minimally via four isolation mounts. This excludes vibrations that might colour the treble and mid-range, while the baffle-less design excludes reflections that degrade the imaging in traditional cabinet loudspeakers, creating the sonic impression that the drivers are suspended freely in space.

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As well as acoustically damping the nest to prevent distortion in fenestria's mid-range and treble drivers, to reduce unwanted low-frequency vibration from the bass drivers and ATL, we employed an innovative design concept derived from technology used to prevent earthquake damage to tall buildings. The planar sides of the speakers move in opposition to the unwanted vibrations, cancelling them out.

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ATL Tecnology

Assembly Tutorial



ATL Tecnology

The source of PMC’s legendary natural, realistic sound is the Advanced Transmission Line (ATL) bass-loading technology, professionally proven all around the world.

ATL uses energy generated by the bass unit in a much more intelligent, efficient way than speaker designs based on ported or sealed boxes. In ATL loudspeakers, the highly braced cabinet is lined with a multitude of custom-designed acoustic materials that absorb all but the very lowest frequencies. These exit from a front-panel vent, extending the low-frequency response, and creating the impression of a far larger speaker with an extra, ultra-high quality bass unit.Find out more

ATL Tecnology

Customer Reviews

"Fenestrias are incredibly great. The sound is full of honey. Thank you for a great product."
Mr I, Naantali
"got the twenty 22 , got blown away by how good they are, have the twenty 26 coming but cannot wait for them as they will be coming fromthe UK via sea freight, A friend suggested the mb2 se at a good price but I remembered having a demo in Hong Kong about the fenestria. A good price was negotiated and the rest is history!"
Mr A, Mabalacat
Mr C, KL Malaysia
"After long time, I enjoy music again."
Mr Z, Zagreb - Lucko