ZSOUND Delivers Sound for 500,000-Strong Teacher Memorial in Korea
Date: September 4, 2023
Location: Daejeon, Korea
Equipment: ZSOUND Innovation 210N × 16 | ZSOUND Innovation 18SN × 8
Event Background
On September 4, 2023, a massive memorial gathering took place in Daejeon, South Korea. The event honored a teacher who
tragically took their own life as a result of wrongful actions by parents. Approximately 500,000 teachers from across the
nation came together to mourn the loss and stand in solidarity, calling for greater protection of educators’ rights.
More than a memorial service, this was a collective movement that united teachers nationwide. An event of this magnitude
demanded a sound reinforcement system capable of delivering every speech and every word with absolute clarity to a crowd
of half a million — ensuring that no voice went unheard.
The Challenge
Outdoor gatherings of this scale present unique sound reinforcement challenges:
- Vast coverage area: The system needed to deliver uniform sound across an enormous field, from front rows to the farthest
edges, without significant SPL drop-off. - Speech intelligibility: As a memorial service centered on speeches and tributes, crystal-clear vocal reproduction was
non-negotiable. - Rock-solid reliability: The system had to perform flawlessly over several hours without a single glitch.
- Rapid deployment: With a temporary outdoor venue, setup and tuning had to be completed within a tight window.
The ZSOUND Solution
Audio production for the event was handled entirely by ZSOUND’s Korean distributor. A core system built around the ZSOUND
Innovation Series line array was deployed to address the demanding requirements:
| Model | Quantity | Role |
|---|---|---|
| ZSOUND Innovation 210N | 16 units | Dual 10-inch full-range line array — main PA |
| ZSOUND Innovation 18SN | 8 units | Single 18-inch subwoofer — low-frequency extension |
The Innovation 210N, a dual 10-inch full-range line array loudspeaker, delivers high SPL output with precise waveguide
control. Sixteen units were flown in left-right arrays with carefully calibrated splay angles, achieving even coverage
across all 500,000 attendees and ensuring every teacher heard every speaker with clarity.
The Innovation 18SN subwoofers provided rich low-frequency support, adding emotional weight to musical interludes and
spoken tributes while maintaining the solemn, dignified atmosphere the occasion required.
Event Significance
The success of this memorial event stands as a testament to both the solidarity of Korea’s teaching community and the
dependable performance of ZSOUND systems in massive outdoor gatherings. Facing an audience of 500,000, the ZSOUND
Innovation Series delivered stable, articulate sound — carrying every word to every listener, and honoring a moment that
deserved to be heard.
ZSOUND remains committed to providing reliable professional audio solutions for events of all scales around the world —
connecting people through sound, and giving voice to the moments that matter.
Special thanks to the ZSOUND Korea distributor team for their professional technical support and on-site dedication.