Yamaha CX-A5200BL Owner's Manual page 24

5.1-channel system
This speaker system creates Virtual Presence Speaker (VPS) using the front, center and
surround speakers to produce a 3-dimensional sound field, and also creates Virtual Surround
Back Speaker (VSBS) using the surround speakers to add a sense of depth to the rear sound
field. This system is suited for enjoying not only 5.1-channel but also for 7.1-channel contents.
Front 5.1-channel system (using surround speakers)
Even when surround speakers are placed in the front side, the unit creates the virtual surround
speakers in the rear side to allow you to enjoy multichannel surround sound (Virtual CINEMA
FRONT) when "Layout (Surround)" (p.122) in the "Setup" menu is set to "Front".
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You can enjoy surround sound even without the center speaker (front 4.1-channel system).
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