Sealdah Station

Project Overview

Sealdah Railway Station, one of India's busiest railway terminals, handles thousands of passengers every day, making clear and dependable public announcements essential for safe and efficient operations. To modernize its public address infrastructure, Sonodyne delivered a comprehensive PA solution featuring A-Lign 400S Monopole Line Array Speakers and MH Series Weatherproof Horn Speakers, integrated with an ASL DSP-based backend. The system achieved the stringent Speech Transmission Index (STI) and Sound Pressure Level (SPL) requirements specified for the project.

The Sonodyne Solution

The installation combines Sonodyne's high-performance loudspeakers to provide seamless coverage across platforms, concourses and operational areas.

A-Lign 400S Monopole Line Array

• Wide, uniform sound coverage with exceptional speech intelligibility

• Controlled vertical dispersion to minimize echoes in large, reverberant spaces

• Slim, architecturally elegant design ideal for transportation terminals

• Delivers natural voice reproduction for critical passenger announcements

MH Series Weatherproof Horn Speaker

• IP-rated construction for reliable outdoor operation

• High-output performance for platforms and open areas

• Excellent voice projection even in high ambient noise

• Built for continuous 24×7 operation in demanding environments

Why Sonodyne for Transportation?

Transportation hubs demand audio systems that are robust, intelligible and dependable. Sonodyne's installation solutions are specifically engineered to deliver:

• Crystal-clear passenger information and emergency announcements

• Uniform coverage across indoor and outdoor spaces

• Weather-resistant performance in challenging environments

• Reliable operation for round-the-clock public address applications

Project Outcome

The Sonodyne public address system at Sealdah Railway Station ensures passengers receive clear, intelligible announcements throughout the station, enhancing safety, operational efficiency and the overall travel experience. By combining the precision of the A-Lign 400S with the rugged reliability of the MH Series, Sonodyne has delivered a future-ready transportation audio solution that meets the demanding requirements of one of India's busiest railway terminals.