Travis Gosa of South Beloit told the Rockford Register-Star that he opened up the speaker because he heard something rattling inside. He was shocked to find quantities of bills, from $10 to $100, all of them covered with red dye.

Gosa called police. Investigators said that the serial numbers showed the money was the proceeds of a holdup at First Federal Bank in Beloit.

Dwellie Sheko of Glenwood was convicted of the robbery and sentenced to more than five years in prison and repayment of $7,995.

Gosa's mother-in-law, Carol Markin, received the speaker from a building owner. It had belonged to an evicted tenant -- Sheko's girlfriend.