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DavidPiska
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Acoustic Diffuser QRD67 - RDacoustic

http://www.rdacoustic.cz/en/high-end-speakers/acoustic-diffuser-qrd67/

Formula for its calculation is based on quadratic differencies of sequences from elementary number theory, which was described by mathematicians A. M. Legendre and C. F. Gauss. Quadratic diffusor’s excellent effectivness and behavior is countable and it operate in horizontal as well as vertical level

http://dev.rdacoustic.cz/wp-content/uploads/RDacoustic_acoustic_Diffuser_QRD67_small.jpg

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