I want to know if I can connect my 2 computer speakers to a self-powered subwoofer, essentially turning my 2.0 speaker setup into a 2.1 setup.
The back of the speakers I have have 2 pair of RCA receptacles (red/white audio). One says audio input but the other pair doesn't say anything and on the product descriptions I've read it just says that you can use these to plug them into other audio devices like mp3 players etc. but they don't say subwoofers with RCA inputs specifically.
1. Connect the subwoofer to the subwoofer output on your system's sound card and configure speaker settings to 2.1. If you have trouble with this, check out your motherboards manual (assume you have desktop?).
2. If your computer doesn't have subwoofer output, you have to have two adapters of the kind RCA female -> 2x RCA male adapters. So from the computer you connect each RCA to the adapter and from the adapter you connect to both speakers and subwoofer.