JBL P 1022 Manual

							THANK YOUfor 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 
infinitebaffle 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 infinitebaffle
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.
Sealedenclosure 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 
exactlyto the specifications
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
(soundpressure level) is what you
desire most, choose a bandpass
enclosure. Bandpassenclosure
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 4ohm voice
coils or as dual 2ohm 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 4ohm
woofers or all dual 2ohm
woofers).2. You may connect the coils of a
dualvoice 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 4ohm load 
as they do running a 2ohm 
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
111
+ + ...
w
1w2w3
where w is the nominal 
impedance of the woofer. 
2. The total system impedance 
of voice coils (or woofers) in
series = w
1+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 ( – )PARALLEL CONNECTION
SERIES CONNECTION  POS ( + )
NEG ( – ) POS ( + )
NEG ( – )PARALLEL CONNECTION
SERIES CONNECTION   
						

							Declaration of Conformity
We, Harman Consumer Group International
2, route de Tours 
72500 Chateau du Loir
France
declare in own responsibility that the products described in this owner’s
manual are in compliance with technical standards: 
EN 6100063:2001
EN 6100061:2001
Klaus Lebherz
Harman Consumer Group International
Chateau du Loir, France  8/05
JBL Consumer Products 
250 Crossways Park Drive, Woodbury, NY 11797 USA
516.255.4JBL (4525)  (USA only)  www.jbl.com
©2005 Harman International Industries, Incorporated. All rights reserved.
JBL, Harman International and Power Series are trademarks of 
Harman International Industries, Incorporated, registered in the 
United States and/or other countries.
Part No. P1022/1024/1222/1224OM8/05
www.jbl.com SPECIFICATIONS
P1024 P1022 P1224 P122210 Dual 4Ohm  10 Dual 2Ohm 12 Dual 4Ohm 12 Dual 2Ohm
VoiceCoil VoiceCoil VoiceCoil VoiceCoil
Subwoofer Subwoofer Subwoofer Subwoofer
Power Handling, RMS 400W 400W 400W 400W
Power Handling, Peak 1200W 1200W 1200W 1200W
Sensitivity (2.83V/1m) 92dB 96dB 94dB 97dB
Frequency Response 25Hz – 500Hz 25Hz – 500Hz 25Hz – 450Hz 23Hz – 450Hz
Impedance 8 Ohms/2 ohms 4 Ohms/1 ohm 8 Ohms/2 ohms 4 Ohms/1 ohm
Mounting Depth 61/4 (159mm) 61/4 (159mm) 61/4 (159mm) 61/4 (159mm)
Cutout Diameter 91/16 (231mm) 91/16 (231mm) 111/16 (281mm) 111/16 (281mm)
Overall Diameter127/16 (316mm)127/16 (316mm)145/8 (372mm) 145/8 (372mm)
Features, specifications and appearance are subject to change without notice.