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Frederik Gustav Turns Speaker Cones into a Reflective Wall for O Days Festival

Speaker by Frederik Gustav, curved wall of circular-brushed aluminum panels at O Days Festival, Copenhagen

Frederik Gustav

Speaker, the newest installation by Copenhagen-based studio Frederik Gustav, turns the anatomy of a loudspeaker into a wall of light that never makes a sound. Commissioned for O Days Festival 2026 on the Refshaleøen waterfront, the piece borrows a familiar shape from audio equipment and strips it of its function, leaving only geometry and reflection behind. What remains is an installation built to be read by the eye rather than heard by the ear — a curved mirror to the festival unfolding in front of it.

Detail of Speaker by Frederik Gustav showing a smaller aluminum disc mounted in front of a larger panel with crossed steel cables
A second, smaller disc floats just off the main surface, held only by four thin cables meeting at a single tensioned point

A grid built from speaker cones anchors the piece: dozens of circular-brushed aluminum panels, each pressed with the concentric rings of an audio cone, are bolted across a curved metal frame that tilts back like an amphitheater wall. The repetition is total — panel after panel, ring after ring — so that from a distance the surface reads less like individual objects and more like a single rippling skin stretched over the festival grounds.

Wide view of Speaker installation by Frederik Gustav, grid of aluminum discs, O Days Festival tents in background
Seen head-on, the staggered offset discs interrupt the otherwise perfect grid, breaking the rhythm just enough to catch the eye

Depending on where a visitor stands, that skin behaves differently. Some panels catch full daylight and flatten into bright, near-white discs; others sit in shadow and darken into soft gray hollows. The installation has no moving parts and no digital control system — the viewer’s own position does all the work, producing kinetic reflections that make the same wall of aluminum look solid from one angle and fragmented into dozens of separate lenses from another.

Angled detail of Speaker by Frederik Gustav showing rows of aluminum panels and a suspended secondary disc
From this angle the suspended disc reads as a small satellite, its cables nearly invisible against the brushed metal behind it

The reference to sound equipment is direct but never literal. Frederik Gustav takes the circular geometry of a speaker cone — a form built for acoustics — and repurposes it as a sound-inspired design object built for optics instead. It’s a swap that recalls other studios currently reworking the speaker as a design object rather than a black box, from Tylko’s sound HiFi speaker shelving to freestanding audio sculpture — though here the cone shape is emptied of its acoustic purpose entirely and pushed toward pure visual rhythm.

Speaker by Frederik Gustav installation with visitors gathered nearby, Refshaleøen, Copenhagen
A concrete block doubles as a table at the base of the piece, marked with the kind of graffiti that collects on festival infrastructure over a season

Nothing about the construction is hidden here: cables, turnbuckles, and bolts sit exposed at the intersection of every panel, forming small exposed construction details wherever two discs meet the frame. That legibility is consistent with the studio’s broader practice, which treats fabrication elements — fixings, joints, tension hardware — as part of the finished language of a piece rather than something concealed behind a clean facade.

Close-up of the cable and turnbuckle hardware connecting aluminum panels in Speaker by Frederik Gustav
A single yellow-capped turnbuckle sits at the exact center of the X, the only spot of color on an otherwise monochrome surface

After sunset, the piece changes register entirely: warm points of light appear behind a handful of discs, glowing through their centers like small eclipses scattered unevenly across the grid, while the surrounding aluminum dims to a cool, almost liquid gray. On the Refshaleøen, Copenhagen, Denmark waterfront, under festival lighting caught here in green and blue washes from a neighboring stage, the same static object reads as an entirely different piece from the one visitors saw in daylight.

Night view of a lit aluminum disc in Speaker by Frederik Gustav, O Days Festival
Backlit from behind, one disc glows amber at its rim while the panel around it stays cool and dark

The piece absorbs its crowd: positioned close to festival infrastructure and foot traffic at O Days Festival 2026, it pulls passing bodies briefly into its reflections before they dissolve out of frame again. That built-in instability places Speaker in company with other reflective installation work made for temporary, crowd-driven settings, in the same spirit as SPY’s Halos kinetic installation for Florence’s Bright Festival, where the audience becomes part of the composition rather than a passive viewer standing in front of it.

Nighttime view of Speaker by Frederik Gustav with illuminated discs, festival scaffolding visible behind
Two lit points sit diagonally apart on the grid, enough to suggest a pattern without ever completing one

The studio behind the piece was founded by Frederik Weber and Gustav Dupont, who studied together at The Royal Danish Academy of Fine Arts in Copenhagen before setting up a workshop on the island of Amager. Its projects — objects, interiors, and large-scale installations alike — tend to build on one another, carrying forward the same interest in exposed structure and raw material logic from one commission to the next, with Speaker reading as the latest chapter in that continuing language rather than a standalone gesture.

Speaker by Frederik Gustav lit at night at O Days Festival, aluminum discs glowing against a stormy sky
Under a darkening sky, the illuminated discs read less like festival lighting and more like a constellation pinned to the metal

By the time the crowd thins for the night, it’s the smallest details that stay with a visitor longest — a bead of condensation catching the glow of a single lit disc, or one panel angled just slightly off from its neighbors, refusing to sit perfectly flat within the grid.

Image courtesy of Frederik Gustav

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