KEF’s patented ’sit anywhere’ Uni-Q driver places the tweeter in the acoustic centre of the bass/midrange cone (woofer). This allows both woofer and tweeter to act as a single, focused source of sound that is dispersed widely and evenly throughout the room. The practical benefit is that great sound can be experienced from anywhere in the listening environment removing the "sweet spot" effect.

KEF's way of dramatically increasing the effective volume (and therefore output) of bass driver enclosures by adding granules of activated carbon, whose adsorption characteristics reduce resistance to each backward movement of the cone. ACE-enabled loudspeakers perform like units up to three times their size, subjectively as well as objectively.