In the NEW M90, we have added 2 additional bass drivers, it adds both sensitivity and bass response over its brethren. Ideally suited for rooms where extra output is needed.
The M90 has each set of woofers in their own anti-resonant acoustic chamber, the center 2 working as a midrange, and the other 2 woofers covering bass frequencies. This is to ensure minimal distortion and cabinet resonances common with slim speakers. The M90 is also phase aligned to operate as an ideal center channel speaker, with 100% symmetric coverage vertically and horizontally