The JBL's CONTROL 24C 2-way ceiling speaker (Pair) is ideal for medium-volume paging and background music in restaurants, and retail environments. Without access to the ceiling, installation is possible, and all necessary installation components are simply provided. To create a more versatile system capable of mixing and matching zones without separate equalisation, this public address system can be used with other High/Mid response control contractor systems. A control contractor subwoofer can be used to boost low frequencies.