Nexo GEO D - Manual (Page 17)

C ONFIGURABLE D IRECTIVITY D EVICE Page 17/97
4 C
ONFIGURABLE
D
IRECTIVITY
D
EVICE
The GEO Wavesource controls dispersion of acoustic energy using an hyperboloid acoustical reflector
in the “coupling plane” (the vertical plane of a curved vertical tangent array) and a diffraction slot in the
“non-coupling plane” (the horizontal plane of a curved vertical tangent array). The patented
Configurable Directivity Device consists of bolt-on flanges that alter the diffraction slot’s exit flare rate.
4.1 Installing & removing GEO’s Configurable Directivity flanges
GEO D10 are shipped in the 80° dispersion configuration, with the 120° flanges in a separate bag.
To change dispersion in the non-coupling plane to 120°:
• remove the front grill (drawings below);
• remove the three TORX (head 25) screws per flange on each side of the GEO Waveguide
(drawings below);
• install the 120° flanges with the six TORX screws
• re-install the grid, being carefull that the NEXO logo must be on the GEO Waveguide side.
REMOVING THE GRILL
REMOVING THE FLANGES