The ECS-650-IC series speaker line is a superb choice for 70V/100V music distributed-line systems and can even be set to bypass the transformer if you need an 8 ohm speaker in a pinch. They can be installed in either drywall or acoustic ceiling tile systems and feature UL approval for plenum rated ceilings and spaces.
Including an innovative 3-piece tile bridge, front-mounted tap settings, and all-cardboard packaging