Focal SOPRA №1 Gebrauchsanleitung Seite 16

SOPRA
®
U s e r m a n u a l
16
Safe pactice
The three position mode selector has been developed to suppress any short-circuit risk or connection error when
two amplifiers are simultaneously connected to Surround Be. In order to ensure the best performance under the
chosen configuration, we strongly recommend that you carefully follow the mode selector connection and setting
instructions.
Turn off any amplifiers connected Surround Be during each mode selector operation!
Bipolar mode (5.1)
Set the right and left surround loudspeakers back selector to Bipolar position. Always connect the amplifier to right
and left Surround Be Input  (Fig. P).
Note: in "bipolar mode", the loudspeakers work together towards the front and rear of the listening area, in order to
cover it in a smooth and consistent manner.
Note: Input  is always inoperative when the selector is set in the Bipolar position.
Twin mode (7.1)
Left loudspeaker: set the selector to Front  position. Connect the surround side channel to input  and the
surround back center channel to input  (Fig. Q).
Right loudspeaker: set the selector to Front  position. Connect the surround side channel to Input  and the
surround back center channel to Input  (Fig. Q).
Note: the side channel is always connected to input  for both left end right loudspeakers and the center channel
always to input . This approach permits switching the selector from Bi mode to Twin mode without wiring
modification.
Note: Twin mode allows back and side surround information to be carried simultaneously to a single surround
loudspeaker, dividing it into two parts, beaming towards the front and rear of the listening area.
Note: surround side channel information will be carried to the front while center channel information will be carried
towards the rear of the listening area, courtesy of the two sets of separated connectors.
Bi/Twin mode (7.1)
Back center speaker: when a third back center loudspeaker is added to the system, Surround Be side channels are
to be set to "Bi mode" while the surround center channel is to be set to "Twin mode". Set the selector to Front 
position. Connect the left back surround channel to input  and the right back surround channel to input  (Fig. R).