Germany - ProLight&Sound 2003: Nexo's new GEO T 'Tangent Array System' was seen at the Siel show in Paris in February (see L&SI March), but got its first major airing in Frankfurt. The GEO T expands on the experience gained from the development, testing and successful operation of Nexo's first tangent array design, the GEO S. The components of the Geo T system are the T4805 (Vertical Tangent Array Module) and T2820 (Vertical/Horizontal Tangent Array Module), along with the new Controlled Directivity Subbass, the CD18. Designed as a scalable system for audiences from 1000 up to 100,000 or more, Geo T has been successfully field tested by SSE Hire (with Tori Amos) and by Show Company in Singapore (with Alan Tam).Proprietary technological features of the system include the Hyperboloid Reflective Wavesource (HRW) - an acoustical reflector derived through rigorous mathematical transformations. It has a real source (the compression driver) and a virtual source, which can be located outside the enclosure, and can be made coincident with or tangent to another HRW, producing coherent coupling between multiple speakers, even when they have different dispersion angles.
Other patent-pending technologies include the Directivity/Phase Device (DPD) which optimizes line source coupling between cone woofers in vertical tangent arrays, and the Configurable Directivity Device (CDD) which lets the user select the dispersion.
