Nexo GEO M1210 System Manual page 2

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GEO Technology is radically new thinking
The GEO R&D Project has, to date, resulted in the following patent applications:
The GEO Hyperboloid Reflective Wavesource™ differs radically from the megaphone-variant type horns
you know and love (or hate). "Tried and true" methods will produce entirely unexpected results. HRW
technology produces precise and predictable results.
The Configurable Directivity Flange. A waveguide that allows the operator to alter its behaviour. An
unprecedented NEXO development that is easy to use – once you know how and when.
The Phase Directivity Device needs no operator input to function, but it is reassuring to know that the
coupling of the midrange of the system is considered as important as the high frequencies...
DSP-driven Directional Sub-bass devices are a new approach to controlling LF/VLF acoustic energy.
GEO is not hard to use when you understand how...
The technology behind GEO is revolutionary, but it is grounded in years of practical experience with the
problems of delivering high quality professional sound to large audiences at high SPL levels. The GEO
toolbox includes NS-1 - a simple yet powerful and highly predictive design tool. The array assembly
system is keyed to the design software and will easily enable you to deploy your design with great
precision. NEXO Digital TDcontroller technology provide driver protection and system optimization for the
GEO M and MSUB series.
GEO is a high precision system
The GEO HRW™ controls acoustic energy more precisely than other multiple element waveguides. It
also makes GEO less forgiving of mistakes. Whilst conventional horns never combine into a coherent
array, they may deliver acceptable results even if the design and deployment of the system is less than
optimal. This is not the case with GEO where careless installation produces catastrophic results.
A GEO Tangent Array is not a "line array"
GEO Technology is equally effective in designing and deploying tangent curved vertical arrays. For best
results in a specific application the user needs to know how multi-speaker arrays interact with audience
geometry, along with the benefits and drawbacks of curved vertical arrays and horizontal arrays.
Curved tangent arrays require different design techniques
In the past, sound reinforcement professionals have worked with horizontal arrays that use conventional
horns to deliver [more or less] 'equal power to equal angles'. Curved vertical arrays are now designed to
deliver [more or less] equal power to equal areas'. When arrays use conventional horns, the lack of
precision, overlap and interference masks errors in array design and aiming. The highly precise GEO
wavesource responds accurately, consistently and predictably to the design and deployment of a curved
vertical tangent array. This is why the GEO rigging system is designed to control angular splay to 0.1°
precision.
GEO curved tangent arrays require different operational techniques
Over the years, system designers and operators have developed a number of signal processing
techniques to disguise and partly overcome the limitations of horn design. "Frequency shading,"
"amplitude shading," "High Frequency compensation", all of these are tools of the advanced sound system
operator. NONE OF THESE TECHNIQUES ARE APPLICABLE TO GEO TANGENT ARRAYS. Instead
of enhancing the array's performance they will severely degrade it.
Take time to learn how to get great results with GEO Technology. It is an investment that will pay off in
more satisfied clients, more efficient operating procedures and more recognition for your skill as a sound
system designer and operator. A comprehensive understanding of GEO theory, tangent arrays, and
specific features of the GEO M Series will help you to operate your system at its full potential.
PLEASE READ CAREFULLY BEFORE PROCEEDING