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OWNER’S GUIDE
P RODUCT LINE:
STUDIO SERIES
MODEL
NUMBER:
S412P
DES IGN GOAL: Bring the thrill of live performance and movie sound to
the home environment by calling on JBL’s professional engineering leadership.
TWEETER TYP E: Pure-titanium dome with EOS™ waveguide
WOOFER TYP E: Cast-aluminum basket with HeatScape™ motor structure
CROS S OVER NETWORK: Straight-Line Signal Path™ (SSP)
P ORT DES IGN: FreeFlow™ flared
P ROFES S IONAL REFERENCE: Studio Monitor
THANK YOU FOR CHOOS ING J BL
For more than 50 years,
JBL has been involved in
every aspect of music
and film recording and
reproduction, from live
performances to the
that you expected – and
that when you think about
purchasing additional
audio equipment for
your home, car or office,
you will once again
choose JBL.
helps us to better
understand our customers
and build products that
meet their needs and
expectations.
JBL Consumer Products
recordings you play in
your home, car or office.
Please take a moment to
complete the enclosed
profile card. It enables us
to keep you posted on our
latest advancements, and
We’re confident that the
JBL loudspeakers you
have chosen will provide
every note of enjoyment
S P EAKER P LACEMENT
Proper placement of the
speakers is an important
step in obtaining the
the optimum placement of
the loudspeakers.
loudspeakers are video-
shielded and can safely be
placed near a television.
Use them as a guide. Slight
variations will not diminish
your listening pleasure.
All of the Studio Series
most realistic sound-
stage possible. These
recommendations are for
MODEL: S412P
Without pad
With pad
This model is shipped with
nonabrasive surface.
Attach each pad to the
bottom of its foot in the
widest portion of the
recessed area.
NEVER drag the speaker
to move it, as this will
damage the pads, the feet
and/or the wood cabinet
itself. Always lift the
four self-adhesive nonskid
pads that are to be used if
the loudspeaker is placed
on a smooth-surfaced
floor, such as tile or
DO NOT attach the pads if
the speaker will be placed
on carpeting.
speaker and carry it to its
new location.
hardwood. Gently lay the
speaker on its side (not its
front or back) on a soft,
3
S P EAKER CONNECTIONS
CONNECTION TIPS
Speakers and electronics
terminals have corre-
sponding (+) and (–)
terminals. It is important to
connect both speakers
identically: (+) on the
speaker to (+) on the
amplifier and (–) on the
speaker to (–) on the
amplifier. Wiring “out of
phase” results in thin
sound, weak bass and a
poor stereo image.
SPEAKER-LEVEL CONNECTIONS
RIGHT
LEFT
–
+
–
+
– +
– +
Speaker Outputs
Your S412P speakers
right-front speaker
sound to all four
should be connected to
your receiver in two ways
(at speaker level and line
level) in order to achieve
the best performance,
especially when listening
to program material
terminals on your receiver
or amplifier to the 5-way
binding posts on the back
of each S412P speaker.
Remember to maintain the
correct polarities (“+” to
“+” and “–” to “–”). The
S412P uses a red binding
post for “+” and black for
“–”. These connections
will provide full-range
transducers, and you
should ALWAYS make
these connections.
If your receiver or
amplifier does not have a
line-level subwoofer
output, then you do not
need to make any other
connections, and you
should skip to the section
titled “Amplifier Controls.”
recorded in digital 5.1
formats, such as
Dolby** Digital and DTS.
®
Connect the left-front and
4
LINE-LEVEL CONNECTIONS
RECEIVER/AMPLIFIER
SUBWOOFER OUT
Y-Connector
(not included)
RIGHT
LEFT
LFE IN
LFE IN
LEFT S412P
RIGHT S412P
Each S412P speaker is also effects that your favorite
two female connectors
to extension RCA patch
cords. Then plug each
patch cord into the
LFE/Subwoofer input of
the left and right S412P
speakers. Note: If your
receiver has separate
left and right line-level
subwoofer (or LFE) output
jacks, you do not need to
use a Y-Connector.
equipped with a line-level
Low-Frequency Effects
(LFE/Subwoofer) input for
superior performance with
digital 5.1 surround
filmmakers intended.
You will need to use a
Y-Connector (not included)
with one male connector
and two female connectors
to connect the line-level
subwoofer output on your
receiver/amplifier to the
LFE/Subwoofer inputs on
the S412P speakers. Plug
the male connector into
the subwoofer output on
your receiver or amplifier,
and connect each of the
formats. The .1 LFE
channel contains
additional low-frequency
information not found in
the left- and right-front
channels. The LFE input
works with the full-range
speaker-level input to
provide the dynamics and
5
AMPLIFIER CONTROLS
LFE Level Control: Allows
S412P. Now the level
you to adjust the volume of control operates through-
the low-frequency effects/
subwoofer channel to suit
your room acoustics or
tastes. However, it only
affects the LFE signal. If
you are not using the LFE
input, the LFE level control
will not operate.
out the entire bass
spectrum below 80Hz, not
just within the .1 channel
portion. This configuration is
generally unnecessary but,
in certain room-placement
conditions, it allows greater
bass-level control.
S 4 1 2 P
LFE IN –
LFE LEVEL
Min
Max
Configuring Your Receiver: Power Switches: The main
GREEN “ON”LED
ON
You should choose the
“Large” or “Wide” option
for the left- and right-front
speakers so that full low-
frequency information will
be sent to the S412P
speakers. Make sure that
you also configure your
receiver for “Subwoofer
On” or “LFE On.” In this
case, the LFE/Subwoofer
signal will consist only of
the .1 (bass) channel. The
LFE signal level can be
adjusted by using the
“Power” switch is simply
marked “On” and “Off.”
Turn this switch on to
commence operation of
the powered amplifier
after you have plugged the
power cord into an AC
outlet. The second switch
is labeled “On/Off” and
has two positions. Placing
the switch in the “Auto”
position puts the amplifier
in Standby mode. In this
mode the speaker will be
able to automatically
OFF
POWER
ON/OFF
MANUAL
ON
AUTO
OFF
This area is designed to become quite warm
during normal operation.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
“WARNING:TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.”
“AVERTISSEMENT: POUR PRÉVENIR LES RISQUES D’INCENDIE OU
DE CHOC ELECTRIQUE, EVITER D’EXPOSER CET APPAREIL
PLUIE OU L’HUMIDITE.”
A
LA
A
auto sensing by choosing
the auto position.
LED Indicators: When your
speaker is turned on but is
not receiving a signal, the
LEDs glow red to let you
know that your speaker is
plugged in. When the
LFE level on the S412P
amplifier panel. For initial
setup, you should set the
level controls on both
sense an incoming signal,
which will trigger it to turn
fully on. The speaker will
also automatically switch
itself back into Standby
mode after approximately
10 to 15 minutes have
passed without its sensing
a signal. We recommend
that you leave this switch
in the “Auto” position for
most applications. If you
will be away from home or
not using your speakers
for an extended period of
time, you should turn the
speakers off by using the
main power switch. The
Manual position will bypass
the auto-sensing feature
and leave the amplifier on
until turned off with the
speakers at minimum
(full counterclockwise
rotation). With 5.1 source
material playing, advance
the level controls on each
speaker slowly until the
desired amount of effects
channel is present. This
is a rather subjective
speaker is receiving a
signal, the LEDs glow
green. We have provided a
convenient “Green ‘On’
LED” switch on the back
panel to allow you to shut
off the front LEDs should
they interfere with your
enjoyment of a movie. This
switch has no effect when
the LEDs are in red mode.
adjustment and should be
made using a variety of
program materials.
If you choose, you can use
the “Small” or “Narrow”
setting on your receiver.
In this case, all of the
information below 80Hz
will be fed to the LFE/
main switch or returned to
Subwoofer input on the
6
TROUBLES HOOTING
If there is no sound from
any of the speakers:
If there is no (or low) bass
output:
If you are using the S412P
LFE/Subwoofer input and
the bass level decreases
(instead of increasing)
when you turn the LFE/
Subwoofer Level knob
clockwise:
• Check that receiver/
amplifier is on and that a
source is playing.
• Make sure the polarities
(+ and –) of the left and
right “Speaker Inputs” are
connected properly.
• Review proper operation
of your receiver/amplifier.
• Make sure that the
• Recheck to make sure
that your receiver or
speaker is plugged into an
active electrical outlet and
switched on, and that the
green LEDs are displayed.
If there is no sound coming
from one speaker:
amplifier-speaker outputs
are correctly connected to
the S412P speaker inputs
(gold-plated binding posts),
(+) to (+) and (–) to (–). The
S412P (+) terminal has a red
stripe and is located on the
right-hand side, below the
letter “L” of the molded JBL
logo, when looking directly at
the back of the S412P.
• Check the “Balance”
control on your
receiver/amplifier.
If you used the LFE input
and there is no sound from
the subwoofer:
• Check all wires and
connections between
receiver/amplifier
and speakers.
• Check that receiver/
amplifier is on and that a
source is playing.
• Make sure all wires are
connected. Make sure
none of the speaker wires
are frayed, cut or
• Make sure that the
speaker is plugged into an
active electrical outlet.
• If the wires are connected
properly, the confusion may
be attributable to the design
of your receiver/ amplifier.
Your unit may have inverting
inputs, which reverse the
polarity of the signal
punctured.
• Check all wires and
connections between
receiver/amplifier and
speakers.
If the system plays at low
volumes but shuts off as
volume is increased:
• Make sure all wires are
connected. Review the
“Line-Level Connections”
section on page 5 of this
manual and make sure that
a single RCA patch cord
is connected to each
loudspeaker from the
Y-Connector plugged into
the receiver/amplifier’s
subwoofer output. Make
sure none of the speaker
wires are frayed, cut or
punctured.
between the inputs and
outputs of the amplifier. To
check if this is the case,
reverse the speaker con-
nections for ALL S412Ps in
your system (and disconnect
any other speakers in the
system) so that the
• Check all wires and
connections between
receiver/amplifier
and speakers.
• Make sure all wires are
connected. Make sure
none of the speaker
wires are frayed, cut or
punctured.
receiver/amplifier’s (+)
connector is connected to
each S412P’s (–) (black
stripe) speaker connector.
If you do this and the
• If more than one pair of
main speakers is being
used, check the minimum
impedance requirements of
your receiver/amplifier.
S412Ps function properly
(bass increases as you turn
your LFE/Subwoofer level-
control knobs clockwise),
your receiver/amp uses
inverting inputs. This is not
a problem. Simply connect
all of the speakers in your
system the same way, with
the receiver or amplifier’s
(+) terminal to the speaker’s
(–) terminal, and the receiver
or amplifier’s (–) terminal to
the speaker’s (+) terminal.
• Review proper operation
of your receiver/amplifier,
including making sure that
you have configured your
receiver so that the sub-
woofer output is active.
7
S P ECIFICATIONS
S412P
Maximum Recommended Amplifier Power*: 250W
Powered Subwoofer Amplifier Output: 200W
Nominal Impedance: 8 Ohms
Sensitivity (2.83V/1m): 91dB
Frequency Response (–3dB): 32Hz – 20kHz
Crossover Frequencies: 200Hz, 850Hz, 3500Hz
High-Frequency Transducer: 1" Pure-titanium dome
Midrange Transducer: 4" PolyPlas™ cone
Midbass Transducer: 6" PolyPlas™ cone
Low-Frequency Transducer: 12" PolyPlas™ cone
Dimensions (H x W x D): 44" x 16" x 13-3/8" (1118mm x 406mm x 340mm)
Weight (per speaker): 86 lb (39.1 kg)
*The maximum recommended amplifier power rating will ensure proper system headroom to
allow for occasional peaks. We do not recommend sustained operation at these maximum
power levels.
Occasional refinements may be made to existing products without notice but will always meet
or exceed original specifications, unless otherwise stated.
**Trademark of Dolby Laboratories.
DTS is a registered trademark of Digital Theater Systems, Inc.
OWNER’S GUIDE
P RO S OUND
COMES HOME™
P RODUCT LINE:
STUDIO SERIES
MODEL
NUMBER:
JBL Consumer Products
S412P
250 Crossways Park Drive, Woodbury, NY 11797
8500 Balboa Boulevard, Northridge, CA 91329
800-336-4JBL (4525) (USA only)
DES IGN GOAL: Bring the thrill of live performance and movie sound to
the home environment by calling on JBL’s professional engineering leadership.
TWEETER TYP E: Pure-titanium dome with EOS™ waveguide
WOOFER TYP E: Cast-aluminum basket with HeatScape™ motor structure
CROS S OVER NETWORK: Straight-Line Signal Path™ (SSP)
P ORT DES IGN: FreeFlow™ flared
©1999 JBL, Incorporated.
JBL is a registered trademark of JBL, Incorporated.
Part No.S412P O/G
P ROFES S IONAL REFERENCE: Studio Monitor
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