Dr. Bruce Edgar
Technical/audio career began when had to leave doctoral program at UCLA to fulfill military obligation. Did this in 2 phases first with the Air Force as General Electric contractor as radar specialist at remote Alaska base. Transferred in 1968 to GE program with NASA and began using electronics background in computer maintenance on the large mainframes of the time. Upon completion of military obligation did freelance maintenance for the large recording studios and movie lots such as Fox in the Los Angeles/Hollywood area. Over the next 25 years became more focused on speaker work and developing own line of speakers. Met Dr Bruce Edgar in 1998 and developed a collaboration of his tractrix horns and my field coil drivers. These products were integrated into several high end product lines leading to interest by Brush/Materion in taking their beryllium domes and developing a finished diaphragm for the pro market. That project was completed by 2011. Now simi-retired was talked into again doing a challenging product development by David Dai leading up to the forming of ESD. Life member of Audio Engineering Society AES, and Society of Motion Picture and Television Engineers SMPTE.
David Dai is the founder of ESD Acoustic. Having been an audiophile for decades, he has bought over ten world-class hi-end speaker systems himself. Driven by his pursuit of extreme hi-fi speaker system and enforced by his knowledge about horns, field coil drivers and carbon fiber material, he decided to go into the speaker industry.
With his past experience administrating listed corporation, he integrated the specialties of Dr. Edgar, Mr. Saye and other tech teams, researched and developed the world's first full carbon fiber horns & field coil driver five ways active crossover speaker system.
Meanwhile he has organized the development of high standard CD room, DAC, preamplifier, class-A amplifier, field coil power supply and cords. The engineering prototype first appeared in HIGH-END 2018 Munich, received much attention and highly regarded.
Dr. Guichao Hua had his Ph. D of Electronic Engineering at Virginia Polytechnic Institute and State University, and is a world-class expert in the field of switch mode power supply.
In 1994, he along with the director of CRES research center Fred.C. Lee founded VPT company, which has become the world's largest supplier of military switch mode power supply.
In 2007 he founded Inventronics (Hangzhou) Inc. which has gone public in 2016.
He joined ESD Acoustic in 2017, aiming to apply switch mode power supplies in the speaker industry. The technology has been successfully applied in ESD’s amplifiers, field coil power supplies, central intelligent sequencers etc. It eliminates the disturbance from the power grid, securing the transient response and fidelity of the system.
Jacky Dai is the student of Dr. Edgar and Mr. Saye in speaker theory, design and manufacturing. He developed the R&D prototype of ESD Acoustic with the two masters.
In 2017, he returned to China helping to found ESD Acoustic. Based on the theory of his two mentors and the progress of modern design software, material science and craftsmanship, he innovatively designed carbon fiber horn &field coil driver units of the next generation. Meanwhile he incorporated Chinese cultural elements into the design as ESD’s brand genetics.