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INFINITY ALPHA 1200S
1
Infinity Alpha Series
The Infinity Alpha Series of loudspeakers continues Infinity’s
long-standing commitment to accurate sound reproduction.Our
patented Ceramic Metal Matrix Diaphragm™ (C.M.M.D.™) drivers
and proprietary Bass Optimization System,™along with precision
dividing networks and rigid,well-braced enclosures,combine to
deliver uncompromised performance in any stereo or multi-
channel home theater.
Unpacking the Subwoofer
If you suspect damage from transit,report it immediately to your
dealer.Keep the shipping carton and packing materials for
future use.
Since the installation of a subwoofer can be somewhat more
complicated than installing full-range speakers,it is essential that
you read this section very carefully prior to connecting the
subwoofer to your system.Should you have questions relating to
your installation,it is advisable to call either your dealer or
Infinity’s Customer Service Department for advice.
The performance of the subwoofer is directly related to its
placement in the listening room and how you align the subwoofer
with its satellite speakers.Setting the volume of the subwoofer in
relationship to the left and right speakers is also of critical
importance because it is essential that the subwoofer integrate
smoothly with the entire system.Setting the subwoofer’s volume
level too high will result in an overpowering,boomy bass.Setting
the volume level too low will negate the benefits of the subwoofer.
Here are several additional facts on installation that may prove
useful.It is generally believed by most audio authorities that low
frequencies (below 125Hz) are nondirectional and,therefore,
placement of a subwoofer within any listening room is not critical.
While in theory it is true that the larger wavelengths of extremely
low frequencies are basically nondirectional,the fact is that,when
installing a subwoofer within the limited confines of a room,
reflections,standing waves and absorptions generated within the
room will strongly influence the performance of any subwoofer
system.As a result,the specific location of the subwoofer becomes
important,and we strongly recommend that you experiment with
placement before choosing a final location.
Placement will depend upon your room and the amount and quality
of bass required (for example,whether or not your room permits
placement of the subwoofer near either satellite).
Figure 1.This example shows the subwoofer positioned behind
the right-channel satellite speaker to re-create the actual
location of bass instruments in an orchestra and/or add impact
to movie soundtracks.
SUB
RIGHT-
CHANNEL
SPEAKER
PRIMARY
LISTENING
AREA
PLACEMENT