e surround le and right speakers reproduce 
the ambient sound and eects present in a 
multichannel home cinema system and should be 
installed slightly higher than the listener’s ears.
e surround back le and right speakers 
are used to add extra depth and better 
sound localisation and should be installed 
approximately one metre higher than the 
listener’s ears. Place the two surround 
back speakers such that there is an arc of 
approximately 150 degrees between each 
surround back speaker and the centre speaker. 
e surround back speakers should face the front 
of the room as shown in the diagram to provide 
the largest ‘sweet spot’.
Position your front le and right speakers to 
achieve a good stereo image for normal musical 
reproduction as well as for the multichannel 
modes. If they are placed too close together there 
will be a lack of spaciousness; if they are placed 
too far apart a stereo image will appear to have a 
large ‘hole’ in the middle and will be presented in 
two halves.
e centre speaker allows for a more realistic 
reproduction of dialogue. e centre speaker 
should have a similar tonal balance to the front 
le and right speakers and be positioned at a 
similar height.
A subwoofer will greatly improve the bass performance of your 
system. is is useful for reproducing special cinema eects, 
especially where a dedicated LFE (Low Frequency Eects) 
channel is available, as with many discs encoded with Dolby or 
DTS technologies.
More than one subwoofer unit may be required for larger 
installations, particularly in rooms of a timber frame 
construction. 
speakers
e AV860/AVR850/AVR550/AVR390 allows you 
to connect up to seven speakers and up to two active 
subwoofers in the main system. e output channels 
correspond to speakers installed in the front le, centre, 
front right, surround le, surround right, surround back 
le, surround back right, height 1 right, height 1 le 
and an active subwoofer. In addition, up to four height 
speakers can be attached using an additional power 
amplier, see page E-16 for more information.
With the addition of correctly installed and congured 
height channels, Dolby Atmos for the home brings the 
ultimate cinema sound experience to your home theatre 
to create powerful, moving audio that ows around you.
e conguration and placement of your speakers is 
very important. All speakers, with the exception of the 
subwoofer(s), should be arranged around your normal 
viewing/listening position. e subwoofer should be 
placed in a position which gives an even frequency 
response in all listening positions. Incorrect placement 
leads to bass boom in some areas. Oen the only way 
to nd a good position for your subwoofer(s) is by 
experimentation. A good place to start experimenting 
is close to a wall but at least 1m away from any corners. 
You can also consult your subwoofer handbook for 
placement suggestions.
Front left and right
Centre
Surround left and right
Surround back left and right
Subwoofer 
Height speakers
With the AV860/AVR850/AVR550/AVR390 
up to four height speakers can be attached and 
can be either mounted in the ceiling or ‘Dolby 
enabled’ elevation speakers - see page E-34 for 
more information.