JBL 8128 8 In. Full Range In-Ceiling Speaker is a cost-effective loudspeaker for commercial applications. The 8128 features high-fidelity performance in an easy to install package. The system's high sensitivity drivers deliver maximum sound levels using minimal amplifier power. With its contemporary grill design 70V/100V taps and an open-back design the 8100 series brings elegance and performance to basic commercial sound systems or any application not requiring a back can for installation.