The Church and Monastery of St. Francis, a landmark of Croatian heritage nestled in the heart of the seafront city of Pula, has served as a place of worship and cultural gathering for centuries. Recently, the church embarked on a journey to elevate its acoustics and improve sound clarity.
“With its recent collaboration with Renkus-Heinz, facilitated by the brand’s new Croatian distributor, LAV Projekt, the church achieved an impeccable integration of state-of-the-art audio technology,” Renkus-Heinz's announcement states.
Dating back to the 14th century, the Church and Monastery of St. Francis combines Romanesque and Gothic architectural styles. Dedicated to St. Francis of Assisi, the church comprises a central hall, elevated sanctuary, and apse areas, along with a gallery featuring a historic pipe organ. In addition to its role as a place of worship, the church frequently hosts concerts, exhibitions, and cultural gatherings, further amplifying the need for quality audio.
“St. Francis Church’s original sound system was unable to deliver the clarity and coverage needed for both worship services and events,” explains Patricio Valenta, audio system specialist at LAV Projekt. “With the expertise of Renkus-Heinz, we envisioned a system that would respect the church’s aesthetic while addressing the complex acoustics of this sacred space.”
The open and reverberant nature of sacral spaces like the Church of St. Francis presents notable acoustic challenges. Stone walls and high ceilings can often cause sound reflections and echoes that degrade speech intelligibility and audio clarity. For a structure that hosts both spoken word and musical performances, the task requested was this: to deliver consistent sound coverage without disrupting the architecture or creating excessive reverberation.
“Our team knew that any system implemented here had to be meticulously planned,” furthers Valenta. “The objective was to keep sound clear and focused on the congregation without interfering with the church’s ancient aesthetic.”
To overcome these challenges, the project team recommended Renkus-Heinz Iconyx Compact ICC36/3 active digital beam-steerable loudspeakers for the nave and sanctuary areas. The ICC36/3 loudspeakers, chosen for their compact size and robust vertical directivity, provide full sound coverage in a form factor that blends with the historic interiors.
“Given the unique challenges of this space, we selected the ICC36/3 for its precise digital beam-steering capabilities,” says Valenta. “This technology allowed us to focus the audio precisely on the congregation, reducing unwanted reflections and enhancing clarity.”
Two ICC36/3 units were installed between the sanctuary and nave, facing the congregation. Each loudspeaker utilizes Renkus-Heinz’s renowned beam-steering technology, which allows the sound to be directed where needed, minimizing reflections from walls, ceilings, and other surfaces. The integrated 36-channel amplifier enables refined control over the sound field, so that words spoken during a service or event reach listeners with clarity.
For the sanctuary and apse areas, the team also incorporated two Renkus-Heinz UBX4passive directional column loudspeakers. These compact units, mounted discreetly behind the ICC36/3 speakers, provide additional sound coverage to the altar. “The UBX4 was ideal for delivering the required sound reinforcement without visually intruding on the space,” notes Valenta. The UBX Series, utilizing Passive UniBeam technology, achieves asymmetric vertical dispersion, maintaining consistent directivity and reducing interference from side reflections.
An additional Renkus-Heinz UBX8 passive directional loudspeaker was installed in the atrium to extend clear audio coverage to the monastery courtyard. Like the UBX4, the UBX8 is designed to handle outdoor environments and integrates into the exterior layout. “The UBX8 makes the liturgy audibly accessible in the atrium, allowing the sound to carry naturally across the courtyard,” says Valenta.
After installation, the system was calibrated to optimize the performance of the Iconyx Compact using Renkus-Heinz’s OmniBeam software. This tool allows precise control over the angles of each sound beam to ensure seamless audio coverage. Steerable columns are a preferred choice for challenging spaces, and Renkus-Heinz has degned their solutions to be user-friendly. The calibration process played a pivotal role in achieving a Speech Transmission Index for Public Address (STI-PA) score, exceeding 0.6 across more than 90% of the church – demonstrating speech intelligibility.
This first project for Renkus-Heinz’s new Croatian distributor marks a significant milestone, both for the brand and the Church of St. Francis. “This installation exemplifies our commitment to delivering precision audio in even the most challenging and historic spaces,” shares Michal Poplawski, export sales and marketing director at Renkus-Heinz. “The success of this project demonstrates how technology can enhance traditional spaces without compromising their essence.”
“In Pula, the Church and Monastery of St. Francis now stands as a model of how heritage sites can evolve with technology, meeting modern audio needs while preserving historical beauty,” the announcement concludes. “This project not only celebrates Renkus-Heinz’s entry into the Croatian market but also sets a precedent for how sacred and cultural venues can benefit from premium sound solutions.”
For more information visit www.renkus-heinz.com.
