Newbie question I'm assuming. I just purchased a Yamaha RX-677 and everything works great except when I try connecting my patio speakers to Zone 2. I get no sound. However, if I connect the speakers to the Center speaker connection, I hear everything fine. Not sure what I'm doing wrong. FYI - I did change the power amp setting to 7ch + 1Zone in the setup. Also, the patio speaker wires run through a volume control switch. Thanks in advance for any help.