Sound Concepts Finds Niche Installing High-End Electronics by Mark Hengel Posted 6/22/2009 12:00 am Updated 4 years ago Installing electronics in his spare time becomes a multi-million dollar for Ryan Heringer of Jonesboro. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.