I bought a house which has 5 pairs of ceiling speakers (10 speakers total). The panel in the wall has 5 pairs of wires, (10 wires total). This is confusing to me, since I thought each speaker would require two wires for itself. When I try connecting my receiver to the panel, I find that a single pair (red/black) causes sound output in a PAIR of speakers. Does that mean I have to wire the whole house with mono sound? How are two speakers controlled by a single pair of wires? (Is there a splitter internally?)
Update: I connected my home receiver to 3 pairs of speakers in "All Channel Stereo" mode, and things sound pretty good. I still don't understand how this is working though.