S4ai o, Peaker, Lacement – JBL S4VC User Manual
Page 9: Bipo l e dip o le
In a 7.1-channel system, where two
additional S4Ai speakers may be
mounted in the rear wall, the positive
phase arrays should both fire toward
the center of the rear wall, as shown
in Figure 11. Thus, the speaker on the
left (from the perspective of somone
seated in the listening position and
facing the front) should be configured
with its phase switch in the OUT posi-
tion (as shipped), and the speaker on
the right should be configured with its
phase switch in the IN position. See
the table on the right side.
To change the operational mode between Bipole and Dipole, move the
switch to the Dipole-mode position (see Figure 12). The switch can be
accessed from the back of the speaker, or from the front by removing
the upper half of the baffle.
N
OTE
: For Bipole mode, the phase switch must be OUT or the S4Ai will not work properly.
S4Ai O
RIENTATION
– V
ERTICAL OR
H
ORIZONTAL
The S4Ai’s top baffle or “diffuse array” may be rotated 90 degrees clockwise so that the speakers can be placed in
either vertical or horizontal orientation and still be able to produce the correct dispersion pattern. This may be neces-
sary, for example, if the S4Ai is being installed in a ceiling and the joists are running from front to back in the room.
In that situation, conventional in-wall side channels would be firing side to side rather than front to back. To correct
this and produce the correct pattern, remove the eight retaining screws from the “diffuse array” and rotate 90
degrees so the dispersion pattern is correct in relation to the room and the other surround speakers in the system. If
changing from the vertical to horizontal configuration, rotate the array clockwise. If changing from the horizontal to
vertical configuration, rotate the array counterclockwise (see Figure 13). In both cases, take care not to damage the
wiring, which will remain connected to either the Dipole or Bipole connector, as discussed above (see Figure 12).
9
R
C
L
SIDE
LEFT
SIDE
RIGHT
FLOOR PLAN
+
+
R
C
L
SIDE
LEFT
SIDE
RIGHT
REAR LEFT
REAR RIGHT
FLOOR PLAN
+
+
+
+
Figure 10. 5.1 System
Figure 11. 7.1 System
B
IPO
L
E
DIP
O
LE
B
IP
OLE
D
IP
O
L
E
B
IP
OLE
D
IP
O
L
E
BI
P
O
L
E
D
IP
O
L
E
Figure 12. Switch for
Dipole/Bipole mode
S
PEAKER
P
LACEMENT
Phase Switch Setting in Dipole Mode
5.1 System 7.1 System
Side Left
IN
IN
Side Right
OUT
OUT
Rear Left
N/A
OUT
Rear Right
N/A
IN
S4VC/HC/Ai OM 8/19/08 3:26 PM Page 9