Marantz CINEMA 50 9.4-Channel Network A/V Receiver (Black) - Manual (Page 226)

o Back Dolby
Set the presence and size of the back Dolby speakers.
Large:
Use a large speaker that can adequately
play back very low bass frequencies.
Small
(Default):
Use a small speaker that has inadequate
playback capacity for very low bass
frequencies.
None:
Select when the back Dolby speakers are
not connected.
0
When speakers for which you assigned Height1 in “Amp Assign” are set to
“None”, “None” is automatically set for Height2.
o Center Height
Set the presence and size of the center height speaker.
Large:
Use a large speaker that can adequately
play back very low bass frequencies.
Small
(Default):
Use a small speaker that has inadequate
playback capacity for very low bass
frequencies.
None:
Select when the center height speaker is
not connected.
0
When “Surround Height” or “Rear Height” is set to “None”, “Center Height” is
automatically set to “None”.
0
When “Center” is set to “None”, “Center Height” is automatically set to “None”.
Contents Connections Playback Settings Tips Appendix
226
Front panel Display Rear panel Remote Index