KEF C7 Comes With KEF’s phenomenal 19mm (0.75in.) tweeter and ‘tangerine’ waveguide complemented by a pair of large 165mm (6.5in.) bass drivers, an intricate and disarmingly naturalistic three dimensional sound image floods the room. As with all of the new C Series models, the highly rigid cabinet is vented by a carefully contoured front port to provide a wide and extended bass. Dual binding posts allow bi-wiring or bi-amplification for optimal acoustic resolution and a discrete plinth is included for greater stability.