Használati útmutató JBL Power P1222

JBL mélynyomó Power P1222

Olvassa el alább 📖 a magyar nyelvű használati útmutatót JBL Power P1222 (4 oldal) a mélynyomó kategóriában. Ezt az útmutatót 8 ember találta hasznosnak és 2 felhasználó értékelte átlagosan 4.5 csillagra

Letöltés PDF
Oldal 1/4
THANK YOU
for purchasing a JBL®Power Series®subwoofer.
Subwoofer installation requires woodworking skills and
some experience in disassembling and reassembling
automotive interiors. If you lack the tools or necessary skills,
have your subwoofer installed by an authorized JBL dealer.
POWER SERIES®
P1024
P1022
P1224
P1222
car audio subwoofer
owner’s manual
2
CHOOSING AN ENCLOSURE
WARNING: Playing loud music
in an automobile can permanently
damage your hearing as well as
hinder your ability to hear traffic.
We recommend listening at low
levels while driving. JBL accepts no
liability for hearing loss, bodily injury
or property damage resulting from
use or misuse of this product.
Power Series subwoofers are
optimized to perform best in small,
sealed, vented and prefabricated
bandpass enclosures. While
infinite-baffle mounting of
Power Series subs is possible,
power handling will be greatly
compromised because there’s no
enclosed volume of air to prevent
the speaker’s cone from moving
past its limit. For this reason, we
do not recommend infinite-baffle
mounting for Power Series
subwoofers.
You should choose the enclosure
you will use based on the type of
music you listen to, how much
amplifier power you will use for the
subwoofer and how much space
inside the vehicle you can devote
to a subwoofer enclosure.
Because a sealed enclosure
provides the most control over
the woofer’s movement, a woofer
mounted in a sealed enclosure will
handle more power than a woofer
mounted in another enclosure type.
Sealed enclosures provide more
accurate sonic reproduction than
other enclosure types, so they are
well suited to all types of music.
Sealed-enclosure construction
is straightforward and there
are many prefabricated sealed
enclosures available. An optimum
sealed enclosure is always smaller
than other types of enclosures
optimized for a particular speaker,
so they require the smallest amount
of space inside the vehicle.
Vented enclosures provide better
efficiency in the 40Hz – 50Hz range
but this efficiency comes at the
expense of sound in the lowest
octave (below 40Hz) and at the
expense of some control and power
handling. If you are using a small
amplifier, a vented box will provide
more bass output from less power.
Vented enclosures are also well
suited to a variety of music types.
Because vented enclosures require
the volume of the enclosure and the
size of the port to have a specific
relationship with the characteristics
of the woofer, the enclosure must
be built to the specificationsexactly
provided. While there are some
prefabricated vented boxes
available, matching a prefabricated
box to a particular woofer is difficult.
If you wish to use a vented enclosure,
we strongly recommend having your
authorized JBL dealer build it, or
verify that your design is correct
if you wish to build it yourself. An
optimum vented enclosure is always
larger than the optimum sealed box
for the same woofer and will require
more space inside the vehicle.
Bandpass enclosures often
provide the most output available
from any amplifier and subwoofer
combination at the expense of
sonic accuracy. If sheer SPL
(sound-pressure level) is what you
desire most, choose a bandpass
enclosure. Bandpass-enclosure
design is very tricky and the aid
of a computer and enclosure
design software is necessary. If
you are an experienced installer
or have some woodworking
experience, you may wish to build
the enclosure described in the
enclosure design sheet included
with this woofer. Fortunately, there
are many prefabricated bandpass
boxes available and they are all
optimized to extract the most
output possible from any woofer.
Bandpass enclosures can be quite
large and may require a lot of space
inside your vehicle.
JBL Power Series subwoofers
are available in two different
configurations: as dual 4-ohm voice
coils or as dual 2-ohm voice coils.
Depending on the amplifiers you are
using, you may use Power Series
subwoofers in singles or multiples
to maximize the power available
from your amplifiers. To achieve the
maximum amplifier output possible,
you should design a speaker system
that provides the lowest impedance
that your amplifier is rated to drive
safely. When designing a subwoofer
system, consider the following rules:
1. Don’t mix different subwoofer
or enclosure types in the same
system (use all dual 4-ohm
woofers or all dual 2-ohm
woofers).
2. You may connect the coils of a
dual-voice coil woofer in series,
but we recommend that you
avoid connecting separate
woofers in series.
3. You must use both coils of a dual-
voice coil woofer connected
either in series or in parallel.
4. Most amplifiers deliver exactly
the same amount of power
bridged into a 4-ohm load
as they do running a 2-ohm
stereo load.
To design a subwoofer system
that maximizes available amplifier
power, keep the following rules
in mind:
1. The total system impedance
of woofers in parallel =
1
1 1 1
+ + ...
w1w2w3
where w is the nominal
impedance of the woofer.
2. The total system impedance
of voice coils (or woofers) in
series = w1+ w2+ w3...
The diagrams to the right
show parallel and series
speaker connections.
Figure 1. Parallel connection
Figure 2. Series connection
3
CONNECTING YOUR SUBWOOFER TO YOUR AMPLIFIER
POS ( + )
NEG ( – )
POS ( + ) NEG ( – )

Termékspecifikációk

Márka: JBL
Kategória: mélynyomó
Modell: Power P1222

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