Yamaha AVENTAGE CX-A6200 Owner's Manual page 27

When using four presence speakers
Installation position
Front presence speakers:
the ceiling between the extensions of the front speakers and listening position
Rear presence speakers:
the ceiling between the extensions of the listening position and surround (or surround back)
speakers
Caution
Be sure to use speakers that are made for ceiling use and take anti-drop measures. Ask a qualified
contractor or dealer personnel for installation works.
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