The document discusses an electroacoustics seminar where attendees broadened their knowledge about achieving good, intelligible sound for every seat in a venue. Participants examined acoustic principles for sound system design, analyzed how sound waves add and subtract, understood how to size sound systems, and learned the parameters that define a well-behaved loudspeaker. The seminar was led by Oran Burns on education and application support and took place in Nailsworth on June 2, 2015.