It uses two forward facing 8" cone transducers and two further 8" cone drivers. These are acoustically coupled and do not require DSP. The HF section uses a compression driver with a 3" diaphragm, as a line source can only be achieved by using one high frequency driver. Connected to this is a patent-pending Double Parabola developed by Guido Noselli (DPRWG). This radical new HF configuration works as a ribbon driver but with a very high efficiency (110 dB 1w/1m). The C.D.H. 483 Hi-Pack weighs in at just 35kg, including its integral flying system. Outline carefully studied the mechanical alignment and the physical method of rigging: a linear geared track incorporated on the rear of the cabinet allows fine adjustment of 0.25° and (on request) 0.1° adjustments. Due to their low weight, 32 Hi-Pack modules can be flown using a single motor.
The C.D.L. 1815 Butterfly's Low-Pack element also has a patent application pending. It utilises ADLS (Adjustment Directivity Loudspeaker System). Fitted with a 18" woofer for front emission and a 15" woofer inside the box, it gives cardioid dispersion of the frequency band reproduced. Average rear attenuation is 15dB from 40 to 120Hz. Weighing 45.8kg each, up to 24 elements can be flown from a single motor. These elements also have integral flying hardware and thanks to its unique design and light weight can be incorporated into an array with Hi-Pack modules. Software has been developed for the Butterfly product range. The systems' V.I.P. (Vector Implementation Protocol) software has a totally different concept from MS Excel spreadsheet solutions and enables real-time calculation of the actual number of systems required to give optimum coverage for any given area. The software then shows the horizontal coverage of the systems used in a separate window.
(Lee Baldock)
