JBL Synthesis S4S User Manual

Page 6

NSTALLATION

A complete S4S loudspeaker system includes the S4S in-wall subwoofer and the S4SBB back box. These compo-
nents are packaged separately.
NOTE: The THX Ultra2 standard requires that the S4S baffle be mounted vertically.

Installation requires access to the space between the wall studs. Therefore, in new-construction applications, the
S4SBB back box is installed before the wallboard.
For existing construction, carefully remove a section of wallboard that reveals the studs on either side of the bay
where the back box will be installed, enabling the board to be screwed back onto the studs after installation is
complete. Store the wallboard in a safe place until the speaker installation is complete.
Included with the S4SBB:

(10) 5" deck screws
(10) polyurethane bushings
(10) 1/4–20 flat washers
(12) #8 x 3/4" wood screws
(2) wood centering bars
(4) #10 32 x 1-1/2" flat-head screws
(2) Styrofoam

™

blocks

0 Terminal Cup: Connect the speaker wires from your subwoofer
amplifier to these terminals.

1 Mounting Holes for Bushings: The S4S uses a system of bushings to
act as springs that isolate the speaker from room and wall vibrations. Mount
the bushings in each of these holes as described in Step 5 on page 7.

2 Damping Pads: These pads are part of the isolation system to prevent
unwanted resonances. They should be left in place as is.

3 Centering Bars: Screw these bars onto the S4SBB back box using the
included flat-head screws, and then attach them to the wall studs to hold
the S4SBB in place during installation.

4 Speaker Wires: Connect these wires to the terminals on the back of
the S4S subwoofer baffle as described on page 4.

5 Styrofoam Blocks: These blocks support the S4SBB back box and ensure
that it is mounted within the stud bay at the correct height for optimum perfor-
mance. They also help to isolate the speaker system from room resonances.

Detail A

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