4
DRAWING 3
EXCELLENT
for stereo imaging
FINE for
background music;
ACCEPTABLE for
stereo
effect
EXCELLENT
for stereo imaging
OK for background
music; not good
for stereo imaging
Asymmetrical response.
Both speakers aren’t
in line with listener,
Not recommended
Too close together
1
1
2
2
3
Of course, if the speakers are being installed in
an area where listeners usually stand up (such as
a kitchen or hallway), “ear level” will be higher
on the wall than for rooms where listeners are
often seated.
Corners and reflections
When an in-wall speaker is placed close to the
corner of a room, bass frequencies are emphasized.
This can be OK if both speakers are mounted near
corners (while maintaining stereo imaging). But
try to avoid placing just one speaker in a corner
and another on a long flat wall.
Treble is emphasized when it reflects back from
reflective surfaces such as large windows.
Conversely, highs tend to be muffled by soft surfaces
such as drapes, rugs, upholstered furniture, carpet-
ed steps and even textured fabric wall paper.
In general, the best acoustic performance will
result if both speakers face a similar type of surface
and are placed in similar positions on the same
type of wall.
WALL AND CEILING SURFACES
Now that we’ve covered where you should put your
speakers, let’s consider where you CAN put them.
The M-PRO6W requires 3
3
/
4
˝ of wall depth (mea-
sured from the outside surface of the wall).
This means that they can be installed in any wall-
board-and-2x4 stud wall. In fact, the dense, rigid
nature of plasterboard (or lath and plaster in older
homes) acts as a superb speaker baffle.
DRAWING 4
DRAWING 4A
Push on rim of
tweeter to rotate
Tweeter rotated down
M-PRO6W
You can also install B.I.C in-wall speakers in stud walls covered with thick wood paneling
or in wallboard/plaster ceilings. However, avoid:
• Stud walls covered only with thin veneer paneling – the surface isn’t rigid enough and
can cause annoying vibrations and buzzing.
• T-bar “drop ceilings with very thin fiberboard panels which can buzz and vibrate. If you
suspect this will happen, reinforce the drop-in panel with wood or particle board.
• Any wall which can’t provide proper depth (clearance) for the back of the M-PRO6W
speaker to protrude. This includes brick or concrete walls where the wallboard or
paneling is attached to thin furring strips.
• Walls where you know that there are pipes, heating ducts and ESPECIALLY AC wiring in
the general vicinity. For example, if there is an outlet along the baseboard, there is
often a live wire running partly up the wall at that point.
1.
2.
3.