i made some adjustments in the setup menu for each speaker, left and right. Its seems that this reciever allows you to set the decible level for each left and right speaker. I increased this on both of them to +7Db and I'm getting more sound now. This is a very advanced reciever, and it is all very new to me. This is all of the settings that I can find to work with for my zone 2. I'm not sure about polarity. Could someone explain how I check for that? I can tell you that we hooked the postive to the postive and the negative to the negative. The speaker wire is marked with numbers on one side.