Marantz SR5010 - Manual (Page 210)

Front Speaker
Set the front speaker A/B to use for every sound mode.
A
(Default):
Front speaker A is used.
B : Front speaker B is used.
A+B : Both front speakers A and B are used.
0 This can be set when “Assign Mode” is set to “Front B”. (v p. 201)
Contents Connections Playback Settings Tips Appendix
210
Front panel Display Rear panel Remote Index