®
K
APPASERIES
80.1w, 100.1se, 100.1dvc, 120.1se, 120.1dvc
INSTRUCTIONS
Thank you for choosing an Infinity Kappa Series subwoofer.
Kappa Series subwoofers are designed to suit a broad range of mobileaudio applications and can be used in a wide variety of enclosure types to
produce extended, powerful bass in a limited amount of vehicle space. To
ensure maximum subwoofer performance, we strongly recommend that
installation be left to a qualified professional. Although these instructions
explain how to install a Kappa Series subwoofer in a general sense, they
do not show box-construction details and exact installation methods for
your particular vehicle. If you do not feel you have experience, do not
attempt the installation yourself, but instead ask your authorized Infinity
dealer about professional installation options.
Remember to keep your sales receipt with this manual in a safe place so
both are available for future reference.
WARNING: Playing loud music in an automotive
environment can permanently damage your hearing, as well as hinder your ability to hear traffic.
The maximum volume levels achievable with
Infinity speakers, combined with high power
amplification, may exceed safe levels for extended
listening. We recommend using low volume levels
when driving. Infinity accepts no liability for hearing loss, bodily injury, or property damage as a
result of use or misuse of this product.
A FEW WORDS ABOUT ENCLOSURES
Your Kappa Series subwoofer requires an
enclosure to realize its full low-frequency
response. The speaker’s design is flexible enough
to produce exceptional results whether you specify a small sealed, vented or bandpass enclosure.
In vented and bandpass enclosures, box size and
port-tuning frequency will also help dictate the
low-frequency performance and output capability
of your system.
Your Kappa Series subwoofer will also work in
infinite-baffle applications where there is no space
or budget to build a box. Be aware that infinitebaffle or “free-air” mounting will reduce the
power handling of any subwoofer compared to
an application using an enclosure.
Finally, any deviation from recommended
enclosure volumes or port dimensions should be
made using dedicated enclosure-design software.
If this type of software is not available to you, ask
your authorized Infinity dealer for help.
YOUR CAR AND BASS REPRODUCTION
Depending on the size of the vehicle’s interior
listening space, reproduced bass frequencies
below 80Hz are boosted by nearly 12dB per
octave in the car as frequency decreases. NOTE:
This effect, known as the vehicle’s transfer function, plays an important part in shaping the overall in-car response and is displayed graphically
along with freespace response on the enclosed
data sheet for your Kappa subwoofer.
ENCLOSURE CALCULATIONS AND BUILDING BOXES
Use the recommended box designs on the
enclosed data sheet. Choose cabinet dimensions
to fit your vehicle, but do not change the enclosure’s volume. Doing so will change the tuning
frequency of the enclosure and may adversely
affect final performance. If you cannot perform
the necessary calculations yourself, please contact your authorized Infinity dealer for help.
In addition, there are a number of points
you’ll want to keep in mind as you construct an
enclosure:
1. Use 3/4" (19 mm) MDF (medium-density fiberboard) or marine birch wood to build an enclosure. Enclosures for 12" and larger subwoofers,
or small subwoofers driven by high-power amplifiers, should be constructed using 1" (26mm)
material.
2. Seal all joints with glue and screws; do not
use nails. We recommend “deck,” “zip” or drywall
screws since they have coarse threads for better
grip and don’t require pre-drilling holes. Once the
box has been tested, seal all interior joints with
silicone caulk.
3. Depending on the application, fill the enclosure
according to the design you have chosen from
the enclosed data sheet in one of three ways:
zero-percent fill (i.e., no fill), 50-percent fill (i.e.,
1"-thick polyfill sheets on all inside walls except
where subwoofer is mounted), or 100-percent fill
(i.e., entire box is stuffed with loosely packed
polyester fiberfill).
4. Use PVC or ABS pipe for ports. Keep in mind
that the openings at either end of the port must
be at least one port diameter away from any
obstructions, including filling material inside the
box. Rectangular vents can be used as long as
the cross-section surface area matches the
recommended port-area values in the enclosed
data sheet.
5. When using vented boxes, we recommend
using a subsonic filter (like the DBO feature found
on Kappa Series power amplifiers) to limit the
power sent to the speaker at frequencies below
the enclosure’s port-tuning frequency,
thus limiting the speaker’s excursion.
POWER-HANDLING LIMITATIONS
The power-handling capability of any woofer
is related to both its ability to dissipate heat and
the maximum excursion limits of its cone. Once
the speaker’s voice coil moves outside the magnetic gap, power can no longer be converted into
motion and all the amplifier’s power is converted
into heat in the voice coil. This voice-coil heating
is the largest detriment to speaker longevity, so
overexcursion should be avoided. Since speakercone excursion is different for each type of
enclosure, power handling is different for each
enclosure.
Sealed enclosures exert the most control over
the motion of a subwoofer because the air inside
the box acts like a spring against the motion of
the woofer cone. Larger boxes allow for more
excursion, thus providing more low-frequency
output for the amount of power used. When
placed in a sealed box larger than the Vas of the
subwoofer, it will perform as if it were in an
infinite-baffle installation.
Vented and bandpass enclosures have the
lowest amount of excursion for the amount of
sound output. This is a result of port output reinforcing the sound output from the woofer. The
mass of the air contained in the port provides an
acoustic load on the woofer’s cone at the tuning
frequency, and this added mass decreases
woofer-cone excursion. Vented boxes do not provide adequate woofer control when driven below
the port-tuning range, so proper design is important. A vented bandpass box will have the lowest
overall cone excursion provided a subsonic filter
is used.
• Voice-coil overheating and burning due to
overexcursion are often caused by overdriving an
amplifier into “clipping.” A severely clipped
signal, or squarewave, contains nearly twice the
power of a clean sine wave at the same level. Bass
that sounds broken up and distorted at higher
volumes is usually indicative of an amplifier that
is clipping and being asked to deliver power
beyond its rated power.
• Infinite-baffle or “free-air” mounting applications allow for greater cone excursion than
subwoofers mounted in an enclosure. In order
to compensate, recognize that the power-rating
value of the subwoofer will likely be half its rated
power in this application.
• Study the excursion curves on the enclosed
Kappa Series data sheet and note the differences
for different enclosure applications. The type and
size of box used will produce different excursion
demands on the enclosed subwoofer and, consequently, different levels of power handling. As
long as recommended parameters are used, the
subwoofer will perform properly in its enclosed
environment. However, any design deviation may
result in less than optimum performance, and
may also subject the subwoofer to overexcursion
(i.e., where the voice coil leaves the gap) that can
eventually damage the speaker. For additional
help with this issue, please contact your authorized Infinity dealer.
SPECIFICATIONS
Kappa 80.1w
Configuration: 8" woofer
Nominal Impedance: 4 ohms
Power Handling: 100W rms/400W peak
Sensitivity @ 2.83V/1m: 93dB
Frequency Response: 30Hz – 300Hz
Mounting Depth: 4" (102mm)
Cut-out Diameter: 7-3/16" (183mm)
Kappa 100.1se
Configuration: 10" subwoofer
Nominal Impedance: 4 ohms
Power Handling: 250W rms/1000W peak
Sensitivity @ 2.83V/1m: 93dB
Frequency Response: 25Hz – 250Hz
Mounting Depth: 5-1/16" (129mm)
Cut-out Diameter: 8-7/8" (226mm)
Kappa 120.1se
Configuration: 12" subwoofer
Nominal Impedance: 4 ohms
Power Handling: 300W rms/1200W peak
Sensitivity @ 2.83V/1m: 94dB
Frequency Response: 20Hz – 250Hz
Mounting Depth: 5-13/16" (148mm)
Cut-out Diameter: 10-13/16" (275mm)
Kappa 100.1dvc
Configuration: 10" subwoofer
Nominal Impedance: 4 ohms per voice coil
Power Handling: 250W rms/1000W peak
Sensitivity @ 2.83V/1m: 93dB
Frequency Response: 25Hz – 250Hz
Mounting Depth: 5-1/16" (129mm)
Cut-out Diameter: 8-7/8" (226mm)
Kappa 120.1dvc
Configuration: 12" subwoofer
Nominal Impedance: 4 ohms per voice coil
Power Handling: 250W rms/1000W peak
Sensitivity @ 2.83V/1m: 94dB
Frequency Response: 25Hz – 250Hz
Mounting Depth: 5-13/16" (148mm)
Cut-out Diameter: 10-13/16" (275mm)
DECLARATION OF CONFORMITY
We, Infinity Systems A/S
Kongevejen 194B
DK-3460 Birkerød
DENMARK
Steen Michaelsen
Infinity Systems A/S
Birkerød. DENMARK. 3/98
declare in own responsibility, that the products described in this owner’s manual are in compliance with technical standards:
EN 50 081-1/1992
EN 50 082-1/3.1995
®
Infinity Systems, Inc. • 250 Crossways Park Drive,
Woodbury, NY 11797 USA • (516) 496-3400 • FAX (516) 682-3583
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