M2 Master Reference Monitor: A Free-Standing, 2-Way System that can be placed in any environment to provide an exceptionally accurate monitoring experience. Leveraging a new generation of JBL high-output, ultra-low distortion transducers, the M2 provides in-room frequency response of 20 Hz to 40 kHz, and an extraordinary 123 dB maximum SPL to meet the demanding music, cinema and broadcast production requirements for impactful dynamic range.
SUB 18 Studio subwoofer. (Speaker Only. Requires External Power Amplifier) Designed for applications in which very high continuous output and extended low frequency performance are required. Delivers unprecedented performance for demanding dance music production, while providing exceptional accuracy required in cinema post production applications. As an add-on to JBL’s M2 Master Reference Monitor system, the SUB18 allows three times greater output from the system.