2.3 S4-LCR Series Cut-out and Clearance Dimensions
The S4-LCRMT and S4-LCR65W modules require specific wall cut-out
dimensions but have common mounting depth space and drywall (plasterboard)
thickness constraints. These dimensions are illustrated in Diagrams 2 and 3 and
listed in the table. Diagrams 3A to 3C also illustrate an S4-LCR module with
Frame Flanges fitted and removed, and an S4-LCRMT and S4-LCR65W module
consolidated.
Module
Cut-out Size
Min Clear Depth Drywall (Plasterboard) thickness
S4-LCRMT
190 x 213 mm
90.25 mm
X = 32 mm max / 8 mm min
(7
1
⁄
2
x 8
3
⁄
8
in)
(3
1
⁄
2
in)
(1
1
⁄
4
in max / 0
5
⁄
16
in min)
S4-LCR65W
190 x 373 mm
90.25 mm
X = 32 mm max / 8 mm min
(7
1
⁄
2
x 14
11
⁄
16
in)
(3
1
⁄
2
in)
(1
1
⁄
4
in max / 0
5
⁄
16
in min)
S4-LCRMT
190 x 563 mm
90.25 mm
X = 32 mm max / 8 mm min
+ 1 x S4LCR65W
(7
1
⁄
2
in x 22
3
⁄
16
in)
(3
1
⁄
2
in)
(1
1
⁄
4
in max / 0
5
⁄
16
in min)
S4-LCRMT
190 x 914 mm
90.25 mm
X = 32 mm max / 8 mm min
+ 2 x S4LCR65W
(7
1
⁄
2
in x 36 in)
(3
1
⁄
2
in)
(1
1
⁄
4
in max / 0
5
⁄
16
in min)
Diagram 2
Diagrams 3A - 3C
90.25 mm
(3
1
⁄
2
in)
3A. S4-LCR Series minimum clear depth and dry-wall thickness
X
S4-LCR Series wall cut-out dimensions
213 mm
(8
3
⁄
8
in)
373 mm
(14
11
⁄
16
in)
563 mm
(22
3
⁄
16
in)
914 mm
(36 in)
190 mm
(7
1
⁄
2
in)
190 mm
(7
1
⁄
2
in)
190 mm
(7
1
⁄
2
in)
190 mm
(7
1
⁄
2
in)
Single S4-LCRMT
module.
Single S4-LCR65W
module.
Single S4-LCRMT
module consolidated
with single S4-
LCR65W module.
Single S4-LCRMT
module consolidated
with twin S4-
LCR65W modules.
Note:
All wall cut-outs are shown in portrait orientation for
left/right channel use with upper/lower frame flanges. For
centre channel use, with left/right frame flanges, the wall
cut-out must be rotated 90° (landscape format).
3B. S4-LCRMT Installation Frame with and without Frame Flanges
2.4 Back Boxes
In-wall speakers are often installed with back boxes in order
to reduce sound transmission into adjacent rooms or to satisfy
any local statutory building regulations. S4-LCRMT modules
however incorporate an integrated back box so none is needed on
installation.
S4-LCR65W modules do not incorporate a back box and if back
boxes are to be used they must be installed within the walls before
the drywall (plasterboard) is affixed to the studs. Alternatively, the
existing drywall (plasterboard) around each speaker installation
position may be removed to enable a back box to be installed.
The drywall (plasterboard) should be reinstated following back box
installation.
Dynaudio does not supply back boxes suitable for S4-LCR65W
modules however, back boxes from alternative manufacturers may
be used, or back boxes may be constructed on site. In either case,
each S4-LCR65W module requires a 30 Litre (1.1 ft
3)
minimum back
box volume in order to reach its full audio performance potential.
Check with local building regulations for fire
safety. In some areas it is required to have a fire-
rated back box as a fire safety barrier. Ensure that
the surrounding materials meet the flammability
Class 5VA. A fire rated metal back box must have a
minimum uncoated thickness of 1.35 mm.
3C. S4-LCRMT and S4-LCR65W Installation Frames consolidated with Frame Flanges
