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NAC Sound (New Acoustic Concept Sound) is an acoustic consulting and designer speaker company established in 1997 by Italian acoustic designer Francesco Pellisari. Originally based in Italy, now headquartered near Cambridge, England, the company specializes in patented omnidirectional and non-coherent sound wave technologies. NAC Sound manufactures handcrafted ceramic hanging speakers like the Omni series, combining high-quality audio with sculptural art design. Their speakers feature Scan Speak tweeters and molded aluminum woofers with hardwood reflectors, delivering 100W output. The company serves hotels, churches, auditoriums, and high-end residential markets. NAC Sound partners with Sonance for North American distribution, offering designer-focused acoustic solutions. Known for acoustic consultancy in religious venues and public spaces, they've completed projects including the Church of San Lorenzo da Brindisi in Rome.