Sound Concepts Finds Niche Installing High-End Electronics by Mark Hengel Posted 6/22/2009 12:00 am Updated 6 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 articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.