Marantz SR5009 - Manual (Page 26)

0 This unit is compatible with Dolby Pro Logic gz (v p. 252) which offers an even
wider and deeper surround sensation.
When using Dolby Pro Logic gz, install front height speakers.
0 Use the illustration below as a guide for how high each speaker should be
installed. The height does not need to be exactly the same.
.
z
Surround back
speaker
At least 3.3 ft / 1 m
Front height
speaker
Point slightly
downwards Surround
speaker
Front speaker
GViewed from the sideH
z Recommended for Dolby Pro Logic gz
Contents Connections Playback Settings Tips Appendix
26 Front panel Display Rear panel Remote Index