Ovation "Why Round and What's Lyrachord?" - Promotional Brochure

This Ovation Instruments promotional brochure explains the acoustic and engineering rationale behind the company's signature round-back (semi-parabolic) guitar design, developed starting in 1965 by Charlie Kaman and his aerospace engineering team. It introduces Lyrachord, a proprietary composite material developed from aerospace technology used in rotors, radomes, and missile nosecones, which forms the rounded guitar body and offers superior acoustic properties over wood. The brochure argues that Ovation Roundbacks represent the greatest improvements in guitar construction in 400 years, combining aerospace innovation with musical instrument design.