Subwoofer Enclosure Types - Infinity Kappa Series User Manual

SUBWOOFER
SEALED ENCLOSURES
SEALED-ENCLDSURE PERFORMANCE ADVANTAGES SEALED-ENCLOSURE CONSTRUCTION
•
ENCLOSURE TYPES
The air trapped inside asealed enclosure
• The in-vehicle performance will have Sealed-enclosure construction is straight-
Kappa 100.9w and 120,9w subwoofers are
is compressed when the subwoofer
the flattest overall frequency response, forward and forgiving of errors in volume
designed to perform best in moderately
moves rearward and is rarefied when the
• The in-vehicle response will have the
calculation, but air leaks should be avoided,
sized sealed enclosures, vented enclosures
subwoofer moves forward. In both cases,
Use medium-density fiberboard (MOF), glue
and prefabricated band-pass enclosures,
the air inside and outside the box will
widest bandwidth, (Usable low-frequency
and screws to construct the enclosure, and
Infinite-baffle mounting is possible, but the
seek equilibrium by pushing and pulling
response inside the vehicle will be
seal all joints with silicone caulk,
subwoofer's mechanical power handling will
on the subwoofer cone, The result is a
below 20Hz.)
be reduced because there will be no volume
stiffer suspension when compared to the
• An optimum sealed enclosure will always
THE INFINITY RECOMMENDATION
of air to stiffen the subwoofer's suspension
subwoofer operating in free air. This means
be smaller than an optimum enclosure of
100.9w and 120,9w subwoofers in sealed
and prevent overexcursion.lf you choose
that the subwoofer's cone will be harder
another type, enclosures are recommended for enthusi-
infinite-baffle mounting, consider the RMS
to move at low frequencies, acondition
SEALED-ENCLOSURE PERFORMANCE TRADE-Om
asts who prefer accurate music reproduc-
and peak power-handling ratings to be half
which protects the subwoofer from tion and flat frequency response, for those
of what is listed in the specifications in
physical overexcursion, but requires more
• An optimum sealed enclosure will have
who have asmaller space to devote to a
this manual.
power than other designs to achieve a
lower overall efficiency than an optimum
subwoofer enclosure, and for those who
You should choose an enclosure type
given acoustic output.
enclosure of another type,
have plenty of amplifier power devoted to
based on the amount of cargo space you
• A100,9w or 120,9w subwoofer in an
driving the subwoofer, The sealed-enclosure
can devote to the enclosure, the amount
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optimum sealed enclosure will require
design indicated on the technical data sheet
of power you will use to drive your
accompanying this manual represents the
subwoofer(s), and your listening habits.
more amplifier power to achieve agiven
best compromise between low-frequency
acoustic output than in an optimum
extension and flat response,
See accompanying data sheet for specific
enclosure of another type,
enclosure dimension requirements.
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