Installation Guide

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Note that, in all of these examples, overhead speakers must be added to the
playback system in pairs.
Left Front Height/Right Front Height speaker pair
The Left Front Height and Right Front Height speakers should be mounted on the
front wall (instead of on the ceiling) in line with an approximately 30 degrees
horizontal from the center-front reference. This places the Left Front Height and
Right Front Height speakers directly above the Left and Right speakers. If the Left
Front Height and Right Front Height speakers must be mounted on the ceiling, they
should be placed no more than one-eighth the distance to the middle of the room,
approximately 45 degrees vertical from the center-front reference. This guidance
represents a slight change from the original Dolby Pro Logic IIz documentation,
which mandated Z series speakers not be placed inside the left and right main
speakers (for example, closer to the Center speaker).
The Left Front Height and Right Front Height speakers are typically included in Dolby
Pro Logic IIz products.
Figures 25 and 26 show the range of angles at which the Left Front Height and Right
Front Height speakers may be placed.
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Figure 25: Side view of Left Front Height and Right Front Height speaker placement.
30°
45°
Lfh/Rfh
Front Listener Rear