QFlex - Brochure
Why are you not using Dual Concentric
or Coax Drivers?
Effective steering and beam control requires
densely spaced transducers. Tannoy’s
hallmark Dual Concentric drivers are not
suitable for use as array elements, because
they prohibit tweeter spacing wider than
a woofer diameter. This is not surprising
since they are in themselves passive, axis-
symmetric “arrays”. The utilization of coax
drivers or vertically arrayed ‘full range’
drivers is therefore unsuitable for effective
full range beam steering applications. It’s a
simple rule of physics which no amount of
corrective DSP can compensate for.
“You are Tannoy, the inventors of the Dual Concentric”
Out of beam frequency response will be
very irregular
At high frequencies where tweeter spacing
violates spatial sampling theorem
(Dist < wavelength/2), we get strong side
lobes (spacial aliasing)
With extreme steering these lobes may even
be signicantly stronger than main beam
Where to use QFlex?
Any reverberant space where speech intelligibility
is difcult to achieve with standard and
conventional methods.
Where architectural constraints limit the
preferred positioning of conventional loudspeakers.
Houses of worship
Transportation Hubs
Museums and other public spaces
Theatres and Auditoria
Shopping malls
Conference Facilities
Video Signage
Corporate AV