The C-Series exemplifies the d&b System reality. The systems range in performance according to the practical application; relative to their dimensions each delivers high output with minimum distortion. Its applications range from large scale touring and medium scale installation use down to single cabinet setups requiring narrow dispersion with minimum dimensions. They have been optimized for flexible, modular array configurations and high sound pressure levels. The Ci7-TOP and Ci7-SUB are special versions of the established loudspeakers within the C-Series and along with the Ci-SUB are designed for permanently installed rider driven performance spaces. They differ in their unobtrusive mounting hardware allowing aesthetic integration and the ability to colour coordinate both the system and rigging to visual requirements.