Revel M106 - Manual (Page 4)

4 Revel Performa3 M106/M105 Bookshelf Loudspeaker
Owner’s Manual
inStaLLatiOn COnSideratiOnS
Loudspeaker fi delity depends on the following three factors: loudspeaker
accuracy, loudspeaker placement and listening room acoustics.
Advanced Revel design features allow the M106 and M105 to achieve
exceptional acoustical precision. As a result, experimenting with
loudspeaker placement and listening room acoustics will have the most
signifi cant impact on the loudspeakers’ performance.
LOUdSPeaKer PLaCement
The following are important loudspeaker placement considerations for
the M106 and M105:
• Remove all obstructions between the loudspeaker and the
primary listening position. For instance, a coffee table between
the loudspeaker and the primary listening position will create
refl ections that will degrade stereo imaging and timbre. Placing
the loudspeakers near large objects may also cause unwanted
refl ections.
• For the best stereo imaging, place the loudspeakers so that they are
both the same distance from the primary listening position and so
they are both the same distance from the side walls, as shown in
the illustration below.
Front Wall
Equal Distances
Equal
Distances
Left
M106/M105
Right
M106/M105
Primary Listening Position
• For optimal stereo imaging and timbre, aim the loudspeakers
almost directly toward the primary listening position as shown in
the illustration above. If you wish to widen the stereo soundstage
you can reduce this toe-in angle, even to the point at which the
loudspeakers are pointing straight forward.
• Moving the loudspeakers farther from the front and side listening
room walls will improve stereo imaging and the sense of
spaciousness in the listening space.
• Moving the loudspeakers closer to the corners or walls of the
listening room will increase bass response.
• For best results, place the speaker so the tweeter is aligned with a
seated listener’s ears, approximately 36" (91cm) above the fl oor.
Approximately
36" (91cm)
• Optional Performa3 M Stand pedestal stands are available for
the M106 and M105 that place the speakers at the proper height
for seated listeners. Refer to the assembly instructions that are
included with the stands for additional information.
CAUTION: When placed on the optional pedestal stands,
loudspeakers such as the M106 and M105 have a high
center of gravity, which may cause them to fall if tipped
or improperly positioned. To avoid this, anchor the stand
to the fl oor and/or wall using the same procedures and
hardware used to anchor bookcases, wall units, and other
furniture. HARMAN International Industries, Inc. assumes
no responsibility for proper selection and installation of
hardware or for any personal injuries or product damages
resulting from improper installation or a fallen loudspeaker.
LiSteninG rOOm aCOUStiCS
Listening rooms have a profound impact on sound, particularly
at lower frequencies. In fact, the effect of the listening room can
dominate sounds below about 400Hz. Ideally, listening rooms would
include optimized dimensional ratios to minimize the effects of room
resonances. But in reality, most listening rooms are not designed to
enhance loudspeaker performance.
The interaction between loudspeakers and listening rooms is complex,
with two important determinants that affect the loudspeaker and the
listener:
• Surfaces and other boundaries often cause large peaks and dips
in low-frequency response. These peaks and dips can often range
12dB or more.
• Standing waves (also known as room modes or resonances) interact
with both the loudspeaker and the listener, resulting in large errors
in frequency response.
Unfortunately, there is no simple solution that addresses both of
these factors. Even computer software programs that examine one
or both factors may not calculate proper primary listening position or
loudspeaker placement values.
In most cases, proper selection of the primary listening position
combined with proper placement of the loudspeaker can result in
superior performance at lower frequencies. The difference between
superior and inferior results is often just a small adjustment of the
primary listening position or loudspeaker placement. Contact your
authorized Revel dealer for assistance.