OMAHA, Neb.--(BUSINESS WIRE)--Ballantyne Strong, Inc. (NYSE MKT: BTN), a provider of digital technology services, products and solutions, today announced that the company will issue its financial results for the 2015 first quarter before the market opens on Monday, May 11, 2015. A conference call to discuss 2015 first quarter financial results will be held on Monday, May 11, 2015 at 11:30 a.m. Eastern Time / 10:30 a.m. Central Time. Investors and analysts are invited to access the conference ca