The Klines were convicted last month of conspiracy to commit third-degree murder and aggravated assault, but acquitted of third-degree murder.
"My deepest thoughts and concerns go to the Quinn family, all of their friends and Kutztown University," Kenneth Kline said Friday. "I am not the evil person I am made out to be."
A third defendant, Timothy Gearhart, pleaded guilty in August to third-degree murder, admitting that he hit Quinn in the head with a wooden table leg during the fight. He was sentenced to 20 to 40 years in prison.
Defense attorneys for the brothers had said Gearhart acted on his own. But prosecutors said Gearhart and the Kline brothers shared equal responsibility for Quinn's death.
At Friday's sentencing, Quinn's mother, Denise Llewellyn Quinn, read a poem written by her son, while his father, Leo Quinn, said the brothers deserved a lengthy sentence.
"I am heartbroken," he said.
Quinn's killing on Sept. 7, 2007, was Kutztown's first homicide since 1982.