RCF EVOX J8 Powered Speaker.The RCF J8 has a bass reflex enclosure and a line source satellite module with eight 2" full-range drivers and a powerful 12" woofer. On-board 1400 W Class D amplifier powers every component. The EVOX J Series, which is an updated version of the original EVOX systems, keeps the same footprint. The system provides breathtaking audio performance with unmatched musical response and crystal-clear vocal reproduction.