The gilded nave and altar inside the Cathedral of St. Helena
Worship

Cathedral of St. Helena

In a 116-year-old cathedral where sound had scattered off stone for decades, we built a distributed system that finally lets every word arrive whole — from the altar to the front steps.

Vertical
Worship
Location
Helena, MT · 2024
Systems
Audio
01

The brief

The Cathedral of St. Helena has stood since 1908 — a 60-foot nave of stone, tile, scagliola columns, and stained glass. Beautiful, and acoustically brutal: hard surfaces send sound ringing, and for years the congregation caught only fragments of what was spoken. The system it had inherited, installed in the 1980s with speakers hidden inside the chandeliers, never solved it. The parish needed the spoken word — the readings, the homily, the responses of the mass — to arrive clearly in every pew, without altering a building the community has protected for over a century.

02

The approach

In a room this reverberant, volume is the enemy: push a few loud speakers and the sound smears into the stone. So we did the opposite — many quieter sources, distributed through the space, each covering a defined zone. We specified d&b audiotechnik column loudspeakers, a design proven in Europe's old stone churches, and used ArrayCalc to place and time-align every one so speech reaches the far pews as a single clean arrival instead of an echo.

The building set the harder constraints. Every speaker had to disappear. We color-matched the enclosures to the hand-painted vintage-white columns, ran cable through the column cavities with extended drill extensions, and fabricated custom mounts for pillar shapes no standard bracket fits — in a structure that has already survived an earthquake and a train derailment, where a drill gets no second chances. Coverage now runs from the side chapels and choir loft to the altar, with narthex speakers carrying sound out to the front steps.

The congregation standing in the pews beneath the stained-glass windows and marble columns of the Cathedral of St. Helena
A priest reading at the lectern between the marble columns, with flowers and the organ pipes behind
Coloured light from the stained glass falling across the marble columns of the nave, with a column-mounted loudspeaker finished to match the stone
Mass seen from the choir loft: the congregation standing, the altar and clergy ahead, and the hanging chandeliers on either side
03

The result

The moment it went live is the one people still tell.

Today the congregation hears clearly everywhere — chapels, altar, choir loft, even outside the front doors — and the speakers themselves are invisible, finished into the columns as though they'd always been there.

"I began speaking the psalm from our most recent mass and switched over to the new system. There was shock, everyone gasped, then they started clapping."

Father Marc Lenneman, Rector, Cathedral of St. Helenavia d&b audiotechnik

"If people can't hear well in the cathedral, they can't understand the message of the gospel, and they can't respond in faith. This audio upgrade was absolutely necessary and the easiest money I've ever spent."

Father Marc Lenneman, Rector, Cathedral of St. Helenavia d&b audiotechnik
System

Audio

  • d&b audiotechnik xC-Series columns (24C, 24C-E, 16C)
  • xS-Series point sources (4S, 5S)
  • 5D amplification
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