Hi i just found out that i have some old speakers in my house and they were from ~ 1990-2000. It didnt even had an RAC connections, it was from LG. But there was some optical cable and + and - connections for Left Center Right speakers (which i have) and it had around 160W power and etc. etc. But the problem is my computer has only 3.5mm jack connections and i had couple AV receivers which had RAC and i found some cables from RAC to 3.5mm jack i've tried to connect it all but doesnt work. Sorry for my english, it's not my first language.