Single Apparent Source

Like listening to one voice rather than many, sound from a single source is inherently clearer. Not only are the acoustic centres of the high- and mid mid-frequency drivers in the Blade's Uni-Q array coincident, but the four low-frequency drivers are mounted symmetrically equidistant from it so that their acoustic centers occupy exactly the same point in space.

This single apparent source configuration is what makes the Blade so gratifyingly coherent across the frequency range, with noticeably more precise imaging than is possible from any conventional speaker.

Force Cancelling

To avoid dissipating the energy of such potent bass drivers in exciting the cabinet (and thereby generating resonance, especially at high volume), the large kinetic forces involved are cancelled out by mounting the LF drivers rigidly together, back-to-back.

By minimising cabinet colouration, this highly effective configuration partly accounts for the Blade's natural-sounding and engagingly musical performance.

Discrete Bass Chambers

The twinned pairs of bass drivers are mounted in discrete chambers separated by an internal partition. By increasing the frequency of any internal standing waves to way beyond the crossover point, this reduces the need for damping material (which can otherwise impair bass quality). Nothing has been overlooked in the quest for the ultimate clarity, right across the frequency range.

For more information:

KEF Blade Brochure (.pdf) KEF WebsiteKEF Blade Specs