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The rear speakers are responsible for the rear sound effects behind the listening position. 
When using the compact models Focus 110/140 as rear speakers, the speakers can be 
placed into a shelf, mounted at the rear wall or placed on a stand. This allows you a wide 
variety of placements, even if your listening room and furniture limit an optimal setup. 
Corresponding to the surround format 5.1, 6.1 or 7.1, you need to install additional 
speakers (see Fig. 10):

Most often a subwoofer will be utilized for the LFE-signal in such setups, especially in 
larger listening rooms. The position of the subwoofer will be dependent upon the size of 
the room and its acoustics. Dynaudio recommends placing the subwoofer close to the 
front speakers, but not too close to any walls, corners or furniture. This helps to sonically 
integrate the subwoofer in the existing surround channel setup.

Thus, a complete multi-channel setup consists of following speakers:

Because there are many different setup options – from 5.1 to 10.2 channel applications – 
and the fact that loudspeaker positioning will also depend upon the room’s shape, please 
consult your Dynaudio dealer for special applications and for placement options.

5.1: The standard multi-channel setup with two rear speakers.

6.1: An additional rear center speaker is placed between the two rear speakers.

7.1: Two speakers are added on both sides between the front and rear speakers.

Rear speakers (as explained above).

Front (stereo) speakers.

Center speaker.

Subwoofer, possible positions (e.g. Dynaudio SUB).