RCF NX 912-A Powered Speaker. The NX 912-A is expertly developed from the bottom up to provide outstanding audio performance for DJs, bands, and solo performers. A constant directivity waveguide, two-channel 2100W amplifier, 1.75" compression driver, and 12" woofer work together to deliver coherent 100° x 60° listening area coverage with up to 130 dB SPL of distortion-free sound. The NX 912-A combines great performance and dependability in a small package and may be used as a stand-alone speaker for a FOH system, satellite (with subwoofer), stage monitor, or flying speaker. The NX 9 Series speakers from RCF are precisely adjusted for each model, giving unmatched clarity and a deep, potent bass response. They do this by combining their unique FiRPHASE and Bass Motion Control DSP processing.