LP 4th order fixed50-150 Hz± 102nd order variable and 2nd order fixed
Subsonic filter (HPF) 3rd OrderFixed
LFE Low pass 2nd orderFixed Hz± 10LFE input driven only
Limiter
THD at Max. Output PowerYESn/afunctional Maximum Output Power
Features-Auto - On -Off switchYES--functional Refer to ATO section
Phase switch 0-180degfunctional
Volume pot Taper (lin/log)LOG--functional A Taper
Variable crossover 50-150 HzYESfunctional
HP Speaker out functional
LFE -Normal Select switchYES--functional Disables LP filter, intended for LFE
BassQ InputYESfunctional 6.3mm Phono Jack
BassQ OutputYESfunctional Bypass, loop-through - Designed for daisy chain
Input Configuration
Line In (L,R) & LFEYES
Bass Q inYES
Spkr/Hi Level InYES--functional Binding post connector L&R
Signal Sensing (ATO)
Auto-Turn-On (yes/no)YESfunctional Auto - on selection switch in Auto
ATO Input test frequency50Hzfunctional "
ATO Level LFE Input2mVfunctional "
ATO Level Speaker in50mVfunctional "
ATO Level Bass Q input 2mVfunctional "
ATO Turn-on time1 secondsfunctional
Auto Mute/ Turn-OFF Time15 minutes17
Line Input (L, R,LFE)10Kohmsn/aNominal
Speaker/Hi Level Input10Kohmsn/aNominal
--functional Dual RCA jack
functional 6.3m phono mono Jack
Amp connected and AC on, then
input signal applied
T before muting, after signal is
removed
HP single order filter 180 Hz @ 8 Ohms, 90 Hz
@ 4 Ohms load
Auto turn of time (T) must be 10 > T < 17
Minutes
Power on Delay time3sec.4AC Power Applied
Page 4
ParameterSpecUnit
3
Transients/Pops
ATO Transient5 mV-peakn/a@ Speaker Outputs
Turn-on Transient50 mV-peak2v-pp@ Speaker OutputsAC Line cycled from OFF to ON
Turn-off Transient50 mV-peak2v-pp@ Speaker OutputsAC Line cycled from ON to OFF
Efficiency
Efficiency70%65Rated powerNominal Line voltage 120 VAC
Stand-by Input Power12Watts15@ nom. line voltage
Power Cons. @ rated power400Watts400@ nom. line voltage250 Watts @ 6.0 Ohms nominal line voltage
QA Test
LimitsConditionsNotes
Maximum allowable input power under nominal
Input voltage and frequency, in stand-by mode
(HOT or COLD operation).
Protection
Short Circuit Protection YESfunctional Direct short at output
Thermal Protection YESfunctional @1/8 max unclipped Power
DC Offset ProtectionYES-DC present at Speaker Out leadsRelay or crowbar (for driver/fire protection),
Line Fuse Rating
USA-Domestic 4AmpsType-T or Slo Blo-250 V
EU2AmpsType-T or Slo Blo-250 VInternal fuse with UL/SEMKO rated holder
Amplifier should resume operation after short
circuit condition removal
Temperature rise in accessible metal parts
should not exceed 35K rise for domestic version
or 30K rise for European versions
Page 5
When we designed the
S120PII powered subwoofer,
our goal was to offer the user
the best possible performance
combined with the most
flexible and complete
installation options. Please
look over the following three
examples to determine which
description best matches
your system and follow the
corresponding hookup
instructions.
To use the binding-post
speaker terminals •ª with
bare wire, unscrew the collar
until the pass-through hole in
the center post is visible
under the collar. Insert the
bare end of the wire through
the hole in the post, then
screw the collar back down
until the connection is tight.
The holes in the center of the
collars are intended for
banana-type connectors.
Dolby* Pro Logic* (Non-Digital) – Speaker Level
Use this installation method
for Dolby Pro Logic applications (not Dolby Digital,
DTS®or other digital
processing), where the
receiver/processor does not
have a subwoofer output or
a volume-controlled preamp
(line-) level output:
If your receiver features bass
management capabilities that
require you to configure your
speaker settings, make sure
to set your left- and right-front
speakers to “LARGE”.
Connect your receiver or
amplifier’s front left and right
speaker terminals to the left
and right terminals on the
subwoofer that are marked
“High Level In” •. Connect
the left and right terminals on
the subwoofer that are
marked “High Level Out” ª
to the corresponding
terminals on the back of your
front left and right speakers.
Connect your receiver or
amplifier’s center, left and
right surround-speaker
terminals to the corresponding terminals on the
back of your center, left and
right surround speakers.
SPEAKER CONNECTION
4
Left Front
+ –
Left FrontCenter
+ –+ –
Left Surround
+ –
+ –
Center
+ –
Subwoofer
+ –
Receiver
L
HIGH
LEVEL
IN
R
L
HIGH
LEVEL
OUT`
R
L
R
Right Front
Right Surround
Right SurroundLeft Surround
Right Front
+ –
+ –
+ –
+ –
•
ª
Page 6
Dolby Pro Logic (Non-Digital) – Line Level
Use this installation method
for Dolby Pro Logic applications (not Dolby Digital, DTS
or other digital processing),
where the receiver/processor
is equipped with a subwoofer
output or a volume-controlled
preamp (line-) level output:
Use RCA-type patch cords
to connect the line-level
subwoofer outputs on your
receiver or amplifier to the
Line Level inputs ¶ on the
subwoofer. IMPORTANT:
Make sure that the LFE toggle
switch ™ on the subwoofer is
in the “Normal” position. Do
not use the “LFE” position
with Dolby Pro Logic-only
processors.
Note: If your receiver or
amplifier only has one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right Line Level
input ¶ on the subwoofer. It
makes no difference which
jack you choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure your receiver or
processor is configured correctly: Make sure that the subwoofer is configured as “On.”
Note for advanced users: If
your receiver/processor has
a built-in low-pass crossover
filter for the subwoofer output,
then the LFE switch
™ should
be set to the “LFE” position to
bypass the subwoofer’s
internal crossover.
Subwoofer
Out
RECEIVER
L R
HIGH
LEVEL
IN
HIGH
LEVEL
OUT
L
R
L
R
+ –
IN OUT R L
CROSSOVER
FREQUENCY
BASSQ
(See owner’s
manual
before use)
LINE
LEVEL IN
(For LFE
use R or L)
LEVEL
PHASEAUTO
50Hz
80Hz
180°0°LFE
NORMALONOFF
150Hz
MIN
MAX
¡
¢
∞
§
¶
•
ª
™
£
5
Page 7
6
Dolby Digital or DTS (or Other Digital Surround Mode) Connection
Use this installation method
for Dolby Digital, DTS or other
digital surround processors:
IMPORTANT: Make sure that
the LFE toggle switch ™ on
the subwoofer is in the “LFE”
position. Use the Line Level
input jacks ¶ for the LowFrequency Effects channel.
Connect these jacks to the
LFE output or subwoofer
output on your receiver or
amplifier.
Note: If your receiver or
amplifier has only one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right Line Level
input ¶ on the subwoofer. It
makes no difference which
jack you choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure that you have
configured your surround
sound processor for
“Subwoofer On” or “LFE On.”
The front left, front right,
center and rear speakers
should be set to “Small” or
“Large” depending on their
size and frequency response.
Consult your receiver’s or
processor’s owner’s manual.
HIGH
LEVEL
IN
HIGH
LEVEL
OUT
L
R
L
R
+ –
IN OUT R L
CROSSOVER
FREQUENCY
BASSQ
(See owner’s
manual
before use)
LINE
LEVEL IN
(For LFE
use R or L)
LEVEL
PHASEAUTO
50Hz
80Hz
180°0°LFE
NORMALONOFF
150Hz
MIN
MAX
¡
¢
∞
§
¶
•
ª
™
£
Subwoofer
Output/LFE
RECEIVER/PREAMPLIFIER
The jacks marked “BassQ” §
are for use with the JBL
BassQ bass equalization
module that will be released
in the near future. The BassQ
will enable you to optimize
your system’s bass response
by equalizing the output of
multiple subwoofers to
best match your listening
environment.
DO NOT con-
nect these jacks to any other
device. Do not use the BassQ
jacks § without having first
read the BassQ owner’s
manual.
BassQ™Jacks
Page 8
7
OPERATION
The S120PII is equipped with
both a master Power switch
‚ and an Auto turn-on/turnoff switch £. In order to
function, the S120PII must
be plugged into an active
electrical outlet (but not an
accessories outlet on another
component of your audio
system such as a receiver),
and the master Power switch
‚ must be turned on
(the “•” position).
The Auto turn-on/turn-off
switch £ has three positions:
OnThe subwoofer is on at
all times and ready to
play program material.
Auto As long as no audio
signal is received, the
subwoofer is in Standby
mode to conserve
power, indicated by the
red color of the LEDs on
the front of the unit.
When an audio signal is
sensed, the subwoofer
will switch itself into the
fully On mode and begin
playing the program
material. The LEDs will
turn green. When a
period of about twenty
minutes goes by during
which no signal is
sensed, the S120PII will
return to Standby mode,
indicated by the LEDs
turning red.
OffThe subwoofer is off at
all times, even if an
audio signal is present
at its inputs.
If you plan to be away for an
extended time, or if the
subwoofer will not be used,
you may wish to turn off the
master Power switch ‚.
The subwoofer Level Control
∞ adjusts the volume of the
subwoofer relative to the rest
of the system. Proper level
adjustment depends on
several variables such as
room size, subwoofer
placement, type of main
speakers and listener position.
Adjust the subwoofer level so
that the volume of the bass
information is pleasing to you.
When using a Dolby Digital/
DTS receiver, adjust the LFE
level on the receiver to 0dB,
and then adjust the subwoofer
Level Control ∞ for the
desired amount of bass.
Crossover Adjustments
The Crossover Frequency
Control ¢ determines the
highest frequency at
which the
subwoofer reproduces
sounds.
If your main speakers can
comfortably reproduce some
low-frequency sounds, set
this control ¢ to a lower
frequency setting, between
50Hz – 100Hz. This will
concentrate the subwoofer’s
efforts on the ultradeep bass
sounds required by today’s
films and music. If you are
using smaller bookshelf
speakers that do not extend to
the lower bass frequencies,
set the low-pass Crossover
control ¢ to a higher setting,
between 120Hz – 150Hz. This
control ¢ is not used when
the LFE switch
™ is in the
“LFE” position.
Level Control
Power
£
™
¡
180°0°LFE
PHASEAUTO
NORMALONOFF
80Hz
CROSSOVER
¢
FREQUENCY
BASSQ
(See owner’s
manual
before use)
50Hz
IN OUT R L
∞
§
¶
•
ª
150Hz
+ –
LEVEL
MAX
MIN
L
HIGH
LEVEL
R
L
HIGH
LEVEL
R
LINE
LEVEL IN
(For LFE
use R or L)
IN
OUT
S120P
II
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 ÉLECTRIQUE ÉVITER D’EXPOSER CET APPAREIL A LA
PLUIE OU A L’HUMIDITÉ.
ON
‚
OFF
Page 9
8
TROUBLESHOOTING
If you used the High Level
(speaker) inputs • and there
is no sound from any of the
speakers:
•
Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into
an active electrical outlet
and is switched on £‚.
• 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.
Make sure no wires are
touching other wires or
terminals and creating a
short circuit.
• Review proper operation
of your receiver/amplifier.
If there is low (or no) bass
output:
• Make sure the connections
to the left and right “Speaker
Inputs” • have the correct
polarity (+ and –).
• Make sure that the
subwoofer is plugged into an
active electrical outlet and
that both power switches
are on £‚.
• Adjust the Crossover point
¢.
• Flip the Phase Control
switch ¡ to the opposite
position.
• If you are using a Dolby
Digital/DTS receiver or
processor, make sure that the
subwoofer adjustments on
the receiver/processor are
set up correctly. When using
the S120PII’s Speaker Level
inputs •, you should set your
receiver to configure the
main left and right speakers
as “LARGE”.
• Slowly turn the Level
Control ∞ clockwise until
you begin to hear the desired
amount of bass.
If you used the Line Level
inputs ¶ and there is no
sound from the subwoofer:
•
Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into an
active electrical outlet and
that both Power switches
are on £‚.
• Check all wires and connections between receiver/
amplifier and subwoofer.
Make sure all wires are
connected. Make sure none
of the wires are frayed, cut
or punctured.
• Review proper operation of
your receiver/amplifier.
• Slowly turn the Level
Control ∞ clockwise until
you begin to hear the desired
amount of bass.
• Make sure that you have
configured your receiver/
processor so that the
subwoofer/LFE output is on.
Phase Control
The Phase Control ¡
determines whether the
subwoofer’s piston-like action
moves in and out in phase
with the main speakers or
opposite the main speakers.
There is no correct or
incorrect setting. Proper
phase adjustment depends on
several variables such as
subwoofer placement and
listener position. Adjust the
Phase switch
¡ to maximize
bass output at the listening
position.
Remember, every system,
room and listener is different.
There are no right or wrong
settings; this switch ¡ offers
the added flexibility to adjust
your subwoofer for optimum
performance for your specific
listening conditions without
having to move your speakers.
If at some time in the future
you happen to rearrange your
listening room and move
your speakers, you should
experiment with the Phase
switch ¡ in both positions,
and leave it in the position
that maximizes bass
performance.
Page 10
S120PII BLOCK DIAGRAM
9
Page 11
JBL S120PII MECHANICAL/PACKING PARTS LIST
10
ITEMDESCRIPTIONQTYPART NUMBER
112” WOOFER (4.4 ohms DCR)1338008-001
2FRONT GRILLE1338007-001
3GRILLE RETAINER4333249-001
4AMPLIFIER ASSEMBLY1NOT FOR SALE
5PORT TUBE1337859-001
6RUBBER FOOT ASS’Y4338037-001
7SPIKE FOOT KIT1338076-001
8OUTER CARTON1338001-001
9END PAD – TOP/BOTTOM2338002-001
10OWNER’S MANUAL1338003-001
11SURVEY CARD1331384-001
12WARRANTY CARD1338381-001
Page 12
11
Page 13
12
Page 14
S120PII ELECTRICAL PARTS LIST
y
r
13
Part NumberQt
DescriptionReference Designato
Amplifier PCB
Resistors
021-100401-0201Metal oxide film resistor1K 1W J FK TYPER173
021-620303-0202Metal oxide film resistor620R 3WS J 8x20 KINKR76,78