ITASCA, Ill.--(BUSINESS WIRE)--Knowles Corporation (NYSE: KN), a market leader and global supplier of advanced micro-acoustic solutions and specialty components, today announced results for the second quarter ended June 30, 2015. “Our Q2 earnings and gross margins were above the mid-point of our prior expectations,” said Jeffrey Niew, President and CEO of Knowles. “In our mobile consumer segment, we were pleased to see strong sequential sales growth at a North American OEM on continued micropho