S4Ai Orientation - V Ertical Or Horizontal - JBL SYNTHESIS FOUR S4Ai Owner's And Installer's Manual

S P
PEAKER LACEMENT
In a 7.1-channel system, where two
additional S4Ai speakers may be
mounted in the rear wall, the positive
phase arrays for all speakers should
fire toward the rear corners, as shown
in Figure 11. Thus, the side left speaker
should be configured with its phase
switch in the IN position, and the
speaker on the right should be config-
ured with its phase switch placed in
the OUT position (see Figure 11). 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.
Figure 12. Switch for
Dipole/Bipole mode
S4Ai O – V
RIENTATION
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).
L
SIDE
LEFT
+
Figure 10. 5.1 System
H
ERTICAL OR ORIZONTAL
C R
SIDE
RIGHT
+
FLOOR PLAN
Phase Switch Setting in Dipole Mode
Side Left
Side Right
Rear Left
Rear Right
9
L C R
SIDE
LEFT
+
FLOOR PLAN
+ REAR LEFT REAR RIGHT
Figure 11. 7.1 System
5.1 System 7.1 System
IN
OUT
N/A
N/A
SIDE
RIGHT
+
+
OUT
IN
IN
OUT