JBL P1200, P1000, P800, P1500 User Manual
GRAND TOURING SERIES
GENUINE JBL
Automotive
Subwoofers
P-800, P-1000, P-1200, P-1500 Owner’s Manual
™
JBL Power Series
Features
The JBL Power Series consists
of serious subwoofers that are
unlike any others in their class.
They will deliver unparalleled
performance in a wide variety
of enclosures, giving creative
installers unprecedented flexibility in system design.
The JBL Power Series incorporates:
•
Injection-molded Titanium
composite cones
for optimum
combination of stiffness and low
mass
•
Butyl rubber surround for
lower harmonic distortion and
precise voice-coil travel
•
Dual-stacked magnets and
X-Linear™ motor assembly
for controlled, long-throw
cone excursion
02
A Few Words
About Enclosures
The enclosure or box that you
choose for your Power Series
woofer will define the sound that
will ultimately come out of it.
The size of the box and tuning
frequency of port tubes in vented
enclosures dictate the lowfrequency performance and
output capability of your system.
The flexibility designed into the
Power Series subwoofers lets
them make tons of bass in small
sealed, vented and bandpass
enclosures. They will also work
well in infinite baffle applications
where there is no space or budget
to build a box. Be aware that infinite baffle or ”free air“ mounting
will reduce the power handling
Thank you for choosing this
JBL Power Series subwoofer. The
Power Series of automotive subwoofers is designed to be used in
modern car audio systems to
produce extended, powerful bass in
a limited amount of space. Power
Series subwoofers are designed to
suit a broad range of applications
and can be used in a wide variety
of enclosure types. In order to
maximize the performance potential of these subwoofers, it is recommended that installation be left
to a qualified professional. If you
feel you have the ability to properly build an enclosure and install
the subwoofer yourself, the information in this manual will help you
get it right.
Keep your sales receipt with this
manual in a safe place so both are
available for future reference.
•
Deepbeat™ anti-resonance
chassis coating
on the basket to
prevent audible ringing
•
Thermosink™ motor assembly
coating
to dissipate heat and
increase power handling
•
Unique 5-ohm nominal imped-
ance
for extreme flexibility in
installations with multiple subwoofers
The JBL Power Series woofers
are designed to maximize the
sonic potential of any system.
When installed in a proper enclosure they offer smooth frequency
response, excellent transient
response, high-output efficiency,
and high-power handling capa-bility. The result is powerful,
dynamic and accurate sound
reproduction that could only
come from JBL.
03
Enclosure Calculation and
Building
Recommended box designs
are available from your JBL
Dealer, or at www.jbl.com on the
Internet. You may choose cabinet
dimensions to fit your car, but the
internal volume must not be
changed, since changes in internal volume will change the tuning
frequency of the enclosure.
Please contact your authorized
JBL dealer if you cannot do
the necessary calculations yourself. The JBL Speakershop™
dedicated enclosure-design software program may also be helpful
for experienced car-audio
enthusiasts.
Your Car And
The BASS Made In It
Depending on the size of the vehicle, bass frequencies below 50Hz
or 80Hz are actually boosted by
nearly 12dB per octave as the
frequency decreases. If you
wanted to purchase that kind of
power, you would need an amplifier that was eight times more
powerful than the one you have.
You can either reduce bass level
to compensate for this, or simply
sit back and enjoy the “free”
bass.
Sealed enclosures exert the most
control over the motion of a subwoofer because the air acts like a
spring against the motion of the
woofer cone. Larger boxes allow
for more excursion, thus more
sound output for the amount of
power used. When placed in a
sealed box larger than the rated
compliance (Vas) of the subwoofer, it will react 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 tuning
reinforcing the sound output.
Vented boxes will not provide
adequate woofer control when
driven below the port tuning
range, meaning proper design is
important. A fourth-order bandpass box will have the lowest
and the low-frequency response
of a subwoofer. Finally, although
information is available for
Bandpass enclosures from your
JBL Dealer, any variations from
the recommended dimensions
should be made using dedicated
enclosure-design software such as
JBL Speakershop™.
If this type of software is not
available, assistance is available
through JBL‘s Web site at
www.jbl.com or from your authorized JBL dealer.
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