PMC’s twin cabinet format combines the PMC8-2 mid-field full-range monitor with the PMC8-2 SUB subwoofer, forming a perfectly integrated loudspeaker with the sub. Like the smaller active XBD systems, the PMC8-2 XBD configuration gains an impressive 6dB greater bass headroom than the main speaker alone. https://www.provisionavl.com/p....roduct/pmc8-2-xbd.ht