KEF has announced a new motor design that allows for smaller dual-opposed designs with greater excursion. The key concept is that both drivers utilize a single motor system, with overlapping concentric voice coils. This arrangement creates space for higher excursion without the need for a larger cabinet, as would be the case with dual driver, dual motor design.

This new arrangement for a force canceling, dual opposed driver subwoofer system Is not yet implemented in a subwoofer design, but KEF Says that the new Motor tech will appear in a new product "very soon".

Although there is currently not a lot of technical detail available, click here to watch a brief video at on KEF's website.