MARTIN AUDIO OmniLine® delivers consistent audio coverage with
unprecedented accuracy in a wide variety of architectural environments, using
only one amplifier channel per array in many applications. By utilising a complement
of unique, Martin Audio designed drivers, and mechanical alignment techniques,
simple EQ and Limiting is the only processing required. A powerful software
application provides extremely accurate intercabinet and array angles, in order
to achieve optimum coverage over a predefined area. OmniLine's aesthetically
pleasing cabinet is finished in neutral light grey.
Each OmniLine array is constructed by connecting together
multiple array modules. Up to 32 modules can be connected where both high
output and vertical focussing down to low/mid frequencies are required. Smaller
numbers of modules (down to 4) can be used for shorter-throw applications,
where vertical focussing of these frequencies is less important.
Rather than applying DSP to a traditional column, OmniLine’s
vertical beam-forming is achieved by physically articulating individual array
modules to curve the array. The actual array configuration for a specific venue
is determined by powerful, patent pending optimisation software which makes intelligent
judgements about the ‘goodness’ of the array’s SPL distribution against
objective target functions.
OmniLine uses a line of five custom-designed dome tweeters,
with a spacing of only 21mm between each element. The result is sidelobe-free
vertical dispersion from the high frequency section.
The ‘cones’ of the custom-designed LF drivers are sculpted
from an ultra-light, stiff material and precisely follow the ideal contour of
the HF horn walls (patent pending). This provides constant horizontal directivity
from low mid, right up to extreme high frequencies.
Sidelobe Free
OmniLine uses a line of five custom-designed dome tweeters,
with a spacing of only 21mm between each element. The result is sidelobe-free
vertical dispersion from the high frequency section.
Compare this to using off-the-shelf 1" (25mm) dome tweeters.
Sidelobes as loud as the main (red) lobe appear at frequencies as low as 8kHz;
well within the audio band
LF drivers
The “cones” of the LF drivers are sculpted from an
ultra-light, stiff material and precisely follow the ideal contour of the HF horn
walls (patent pending). This provides constant horizontal directivity from low
mid, right up to extreme high frequencies.
Conventional cross-firing driver configurations typically
yield non-optimal HF horn profiles, which causes significant disturbance to HF
dispersion that also varies with frequency.
In short, anything but constant directivity!
Modular construction
Each array is constructed in multiples of 4 modules to make
up arrays of 4, 8, 12, 16, 24 or 32 modules.Resultant array lengths are 0.47m, 0.94m, 1.4m, 1.9m, 2.8m and 3.7m
respectively.
Inter-cabinet connection
Inter-cabinet angles are set via captive, rear-mounted brackets
and linking plates. Angles of 0° to 5° are set in 1° steps by fitting two pin
clamps into the respective holes in each cabinet’s bracket. Once each angle is
set, an orange ‘safety clip’ is fitted to lock the pin clamps in place.
Finally the rear covers are fitted to maintain the sleek, unobtrusive
appearance required of an architectural loudspeaker product.
Deployment
Arrays can be wall mounted or flown via optional brackets.They
are designed to be unobtrusive and adaptable in order toblend in with their
environment.
Wall mounting
Up to 16 cabinets can be wall mounted using the optional
brackets. Pan and tilt are easily achievable. Arrays can be panned left or
right and then the bracket locked in position. Tilt is achieved by setting the
length of a wire rope or chain‘pull-back’ strap, allowing accurate on-site
adjustment of array aiming. The brackets are designed as 1st/2nd fix components
in accordance with typical installation methods.