A:Answer Each speaker has a positive (red) and negative (black) wire. The AVR uses clip connectors. (red for + and black for -) Each speaker will connect to the corresponding red (positive) and black (negative) terminal. The S540BT only supports up to 5 speaker connections. (FL, FR, C, SL, SR) If the 6th speaker is a passive subwoofer, then a sub amp will be needed in conjunction with that passive woofer.