I have two Bose speakers that are RCA, my TV is optical output for sound. HELP!

GetOwnedGaming

Honorable
Jan 20, 2014
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10,590
Hey all, I recently purchased this tv:
http://www.costco.com/LG-47%22-Class-1080p-120Hz-Smart-LED-HDTV-47LB6100.product.100106877.html?catalogId=10701&keyword=47lb6100&langId=-1&storeId=10301&refine=
My Bose speakers are RCA, I want to use the Bose speakers as the primary source of sound for my TV. The only audio output on the TV is Optical Audio. I need an adapter from the RCA to the Optical. I can't seem to find out what I need. Please send me a link of which adapter I need to buy. Thanks!