I have a pair of Micca RB42 speakers for my PC that are powered by a stereo amplifier, to the green audio port. I'm wondering, if I wanted to add a center channel speaker, a Micca RB42-C, powered by a second, mono amplifier, would it be as simple as plugging the line-in from the amplifier to the orange audio port to get it working? Secondly, since from what I understand, this orange port is used for either a center channel speaker or a subwoofer, would this limit me from adding a subwoofer in the future? I've never actually used anything other than the green port for audio on a PC before.
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