Silence the Hum: Twisted Pair vs Conventional TPS in Voice-Evac and EWIS Speaker Lines
Nothing draws complaints faster than a public-address system that crackles during an evacuation drill. For buildings equipped with Voice-Evacuation and Emergency Warning & Intercommunication Systems (EWIS), speech must remain intelligible even when the mains are loaded, lifts are running and fluorescent ballasts are buzzing. Choosing the right speaker cable is one of the simplest ways […]