TX-SR313 volume control of B speakers

This receiver has speaker wire terminals to control zone B speakers in addition to zone A. Is there any way to adjust the volume level for zone B relative to zone A? Because the speakers are much farther away, they are a lot quieter. But there doesn't appear to be any way to adjust the levels for zone B -- in fact the level settings are unavailable when the B speakers are on at all. I was hoping not to need a secondary amp for the other zone, but I'm not sure this is a solution after all.

Hi jdale,

Unfortunately you cannot control the speaker B volume independently from speaker A.

Thank you.