6
PLACEMENT OF THE IW-SR30
There are many opinions about where surround or “rear” speakers should be mounted. The
following is based on the fi ndings of the best academics, and on our experience with many
installations.
In a typical 5.1 surround system a dipole surround speaker, such as the IW-SR30, performs best
when it is mounted directly to the sides of the listener plus or minus 15 degrees or so. This
places the listener in the “null plane” of the speaker. For a listener positioned on the null plane,
the output of the two tweeters and the midrange will be at maximum cancellation. The listener
will hear the speaker only via multiple wall refl ections—producing the most diffuse sound.
Whenever possible mount the IW-SR30’s
high on the side walls of the room, at least
one foot above the height of a standing
listener.
The second preferred position is on the
back wall. If may be necessary to mount
the speakers closer to the center line of the
room to keep the listening area in the ±15°
null plane.
If neither of these postions can be used,
mounting the speakers in the ceiling can
be considered. Ceiling mounted speakers
should be close to the side walls, well away
from an overhead position.
If a large theater room with three or more
rows of seats is planned, then more than
more than one pair of IW-SR30 may be
used to give more even coverage and a
more diffuse sound fi eld. We recommend
that a pair of surrounds be used for every
other seating row (the fi rst, the third, the fi fth, etc.). This follows standard cinema practice.
AN IMPORTANT NOTE ABOUT INSTALLATION
This manual assumes that the installer possesses skill in the proper use of hand and power tools,
knowledge of local building and fi re codes, and a familiarity with the environment behind the
wall or ceiling in which the speakers will be installed. If you do not have the necessary skills and
knowledge, have the speakers installed by a professional.
Optional preconstruction brackets are available for the IW-SR30.
IW-C7
IW-SR30
side wall and back wall
placement options
IW-B7, C7 and IW-SR30.indd 6
IW-B7, C7 and IW-SR30.indd 6
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