Infinity Crescendo Series Owner's Manual page 6

Room corners are difficult to cope with and you
should try to keep the location of the speakers as
far away from corners as possible. Corners add low
frequency reinforcement and can create severe
problems in bass frequencies, often accentuating
bass response, making it inarticulate.
If bass response is inadequate, you may wish
to move the speakers closer into the corners (or
rear wall) for reinforcement; however, as a rule
of thumb, always try to locate the speakers as far
away from corners and walls as possible.
It is often difficult to balance bass response
because it is within this particular frequency
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CRESCENDO EMIT-R PROTECTION CIRCUIT
Crescendo Series speakers include electronic
protection in the crossover network to protect the
EMIT-R Tweeter from excessive power and high
frequency distortion which can be created when
an amplifier is forced into clipping. If the tweeter
turns off while playing music, turn off your entire
audio system to allow the tweeter's protection
electronics to cool. The electronic protection circuit
will reset itself automatically once it reaches normal
operating temperature. When the system is switched
spectrum where the listening room becomes a
substantial influence. In fact, the listening room,
depending on how many reflective and absorptive
areas there are, can influence the entire frequency
range of music. It is for this reason that constant
experimentation is required before a final decision
is made as to where the speakers should be
permanently placed. When moving the speakers
around, listen for sound that is cohesive and evenly
balanced across the audio spectrum. Use various
types of program material when determining
sonic balance.
back on, reduce overall volume by a small amount.
If the tweeter protection circuit continuously
turns off, your amplifier may not have adequate
power to drive your speakers and the amplifier is
probably being driven into severe clipping. This
form of overload generates high frequency distor-
tion which can be damaging if the energy is
allowed to reach the tweeter.
Consult your dealer or contact Infinity if you
are experiencing this type of difficulty.
ROOM ACOUSTICS, SPEAKER POSITIONING, AND TONAL BALANCE
If you desire a more detailed description of room
acoustics and speaker placement, the following
information may prove helpful:
» Large areas of glass, mirrors, and wood paneling
will reflect sound waves and often result in
brittleness and excessive brightness. You can
break the soundwaves created by hard surfaces
with softer surfaces. Draperies or wall hangings
will do a good job in absorbing standing waves
created by hard surfaces. Placing a soft,
absorptive piece of furniture near the hard
surface often helps reduce unwanted spurious
sound waves. Be careful not to absorb too much
sound as this will interfere with sonic balance,
causing overall sound to be dull and lifeless.
» A good listening room has just the right amount
of reflection and absorption. To test the sonic
balance of your room, stand in the location
where the speakers will be installed and clap
your hands two or three times. If the room is
reverberant, you will hear a sharpness or echo.
If the room is dull, the sound of the clap will
decay rapidly and there will be very little or no
echo. In fact, it will seem that the higher fre-
quencies generated by the clap will be missing.
» Furniture, pictures, bookcases, tables, and
lamps will help reduce reflections because they
are located at random points in the room and
this tends to cancel standing waves. Carpeting
or throw rugs also help reduce floor reflections,
although heavy carpeting can absorb a great
deal of the higher frequencies which will make
the room seem less "bass heavy."
» It is customary to place the speakers facing into
the long dimension of the listening room;
however, this doesn't always result in the best
sound. At times, placing the speakers facing
into the short dimension of the room will yield
better results due to the acoustic properties of
the room and the listener's position. Experi-
ment with room placement. You may be
pleasantly surprised by the results.