Prague’s Next Concert Hall Is Being Tested at One-Tenth Scale

Project milestone · Acoustic testing announced September 4, 2026 · Proposed building, not a completed venue

Before a concert hall can be judged by an audience, its design needs ways to become testable. The Vltava Philharmonic in Prague reached one of those moments this September: a physical acoustic model now stands between the drawings and the full-scale building.

BIG’s September 4 announcement identifies a 1:10 model developed with Nagata Acoustics for the proposed 1,800-seat Symphony Hall. Testing follows submission of the building-permit application. The team is also developing full-scale material studies. These are design-development milestones, not evidence that construction is complete or that permission has been granted.

The distinction is important for construction reporting. A model photograph can be as visually persuasive as a completed interior, but it represents a different stage of knowledge. Its value lies in the questions it makes possible before decisions become expensive to change.

At this point, the most useful story concerns the relationship between specialist expertise and architectural form. An acoustic consultant and an architect need a shared basis for examining proposals. A physical model can give that conversation a tangible reference, while still leaving the eventual performance of the occupied building to be demonstrated.

The parallel material studies suggest another scale of inquiry. A hall has to be considered as an overall volume and as a collection of surfaces and details. Neither scale can safely be treated as a final visual layer applied after the important work is done.

No acoustic measurements or test conclusions were included in the announcement reviewed for this article. It would therefore be premature to describe the hall’s sound as successful, or to translate the model into a promise about every seat. The news is that testing is underway and that the project has moved into a more explicit process of refinement.

For the Journal’s Construction & Development section, this is exactly the kind of intermediate work worth making visible. Delivery depends on stages in which a proposal is questioned, adjusted and documented. A small model may have less public drama than a completed roof, but it can reveal more about how a building earns confidence before it is built.