JBL Control Series User manual

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STUDIO
STUDIO
STUDIO
DESIGN GOAL: Bring the thrill of live performance and movie sound to
the home environment by calling on JBL’s professional engineering leadership.
TWEETER TYPE: Pure-titanium dome with EOS™waveguide
WOOFER TYPE: Cast-aluminum basket with HeatScape™motor structure
CROSSOVER NETWORK:Straight-Line Signal Path™(SSP)
PORT DESIGN: FreeFlow™flared
PROFESSIONAL REFERENCE:Studio Monitor
OWNER’S GUIDE
PRODUCT LINE: STUDIO
™
SERIES
S310II, S312II
S26II, S38II,

2
For more than 50 years,
JBL has been involved in
every aspect of music
and film recording and
reproduction, from live
performances to the
recordings you play in
your home, car or office.
We’re confident that the
JBL loudspeakers you have
chosen will provide every
note of enjoyment 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.
Please take a moment to
complete the enclosed
profile card. It enables us
to keep you posted on our
latest advancements, and
helps us to better
understand our customers
and build products that
meet their needs and
expectations.
JBL Consumer Products
THANK YOU FOR CHOOSING JBL
Declaration of Conformity
We, Harman Consumer 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 50081-1:1992
EN 50082-1:1997
Luc E. Godard
Harman Consumer International
Chateau-du-Loir, France. 9/01

5 –6 ft.
SPEAKER PLACEMENT
Proper placement of the
speakers is an important step
in obtaining the most realistic
soundstage possible. These
recommendations are for the
optimum placement of the
loudspeakers. Use these
placement recommendations
as a guide. Slight variations
will not diminish your
listening pleasure.
All of the Studio Series
loudspeakers are video-
shielded and can safely be
placed near a television.
As Front Speakers As Surround Speakers
MODEL: S26II
The S38II can be oriented
either horizontally or
vertically; however, best
performance will result from
horizontal placement. The
logo may be oriented as
needed by gently pulling it
out slightly, rotating it, and
releasing it so that it snaps
into place. Although these
loudspeakers are designed
as a mirrored pair, the
decision as to which one is
left or right will depend on
the amount of space left
between them.
Less than 6–8 feet
More than 6–8 feet
0-2 ft.
This placement provides a
wide spread in sound,
supplemented by the center
channel speaker.
A wider stereo image is
presented with the
tweeter/midrange array
outboard, and a tighter image
is presented with the array
inboard.
For stereo-only applications:
For home theater applications:
MODEL: S38II
MODELS: S310II,S312
II
3

4
SPEAKER CONNECTIONS
CONNECTION TIPS
MODELS: S310II, S312II
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. With
the advent of multichannel
surround-sound systems,
connecting all of the
speakers in your system
with the correct polarity
remains equally important
in order to preserve the
proper ambience and
directionality of the
program material.
To use the binding-post
speaker terminals,
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 this hole; then
screw the collar down
until the connection is
tight. The hole in the
center of each collar is
intended for use with
banana-type connectors.
–+–+
–+
Receiver’s Speaker Outputs
LEFT
RIGHT
–+
These models feature four
rubber feet that enable
them to be placed on a
smooth-surfaced floor,
such as tile or hardwood.
Four metal spikes are
supplied for use when the
speaker is to be placed on
a carpeted surface to
decouple the speaker from
the floor and prevent
unwanted damping. To
insert the spikes, gently lay
the speaker on its side (not
its front or back) on a soft,
nonabrasive surface. Each
spike screws into the
threaded insert in the
center of each rubber foot.
Make sure all four spikes
are screwed in completely
for stability.
NEVER drag the speaker
to move it, as this will
damage the spikes, the
feet and/or the wood
cabinet itself. Always lift
the speaker and carry it to
its new location.
CAUTION: Floorstanding
(tower) loudspeakers have
a high center of gravity
and may become unstable
and tip over during
earthquakes or if rocked,
tipped or improperly
positioned. If this is a
concern, these speakers
should be anchored to the
wall behind them, using
the same procedures and
hardware customary for
anchoring bookcases and
wall units. Customer is
responsible for proper
installation and proper
selection of hardware.
The supplied self-adhesive
felt pads may be attached
to the bottom corners of
your speakers to protect
your furniture.
MODELS: S26II, S38II

TROUBLESHOOTING
5
If there is no sound from
any of the speakers:
•Check that receiver/
amplifier is on and that a
source is playing.
•Review proper operation
of your receiver/amplifier.
If there is no sound
coming from one speaker:
•Check the “Balance”
control on your
receiver/amplifier.
•Check all wires and
connections between
receiver/amplifier
and speakers.
•Make sure no wires are
touching other wires or
terminals and creating a
short circuit.
•Make sure all wires are
connected. Make sure
none of the speaker wires
are frayed, cut or
punctured.
•In Dolby* Digital or DTS®
mode, make sure that the
receiver/processor is
configured so that the
speaker in question is
enabled.
•Turn off all electronics
and switch the speaker in
question with one of the
other speakers that is
working correctly. Turn
everything back on, and
determine whether the
problem is in the same
place, i.e., the speaker that
was working previously
now has no sound and the
speaker that was not
working now sounds fine;
or whether it has moved,
i.e., the speaker that was
not working still has no
sound and the speaker that
was working is still fine. If
the problem is in the same
place, the source of the
problem is most likely with
your receiver or amplifier,
and
you should consult the
owner’s manual for that
product for further
information.
If the problem
has followed the speaker,
consult your dealer for
further assistance or,
if that is not possible,
visit our Web site at
www.jbl.com for further
information.
If the system plays at low
volumes but shuts off as
volume is increased:
•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.
•If more than one pair of
main speakers is being
used, check the minimum
impedance requirements
of your receiver/amplifier.
If there is no (or low) bass
output:
•Make sure the polarities
(+ and –) of the left and
right “Speaker Inputs”are
connected properly.
•Consider adding a
powered subwoofer to
your system for use with
digital “.1”surround
formats.
If there is no sound from
the surround speakers:
•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.
•Review proper operation
of your receiver/amplifier
and its surround sound
features.
•Make sure the movie or
TV show you are watching
is recorded in a surround
sound mode. If it is not,
check to see if your
receiver/amplifier has
other surround modes you
may use.
•
In Dolby Digital or DTS
mode, make sure your
receiver/processor is
configured so that the
surround speakers are
enabled.
•Review the operation of
your DVD player and the
jacket of your DVD to make
sure that the DVD features
the desired Dolby Digital or
DTS mode, and that you
have properly selected
that mode using both the
DVD player’s menu and the
DVD disc’s menu.

S26II S38II
Description: 2-Way 6" bookshelf 3-Way 8" horizontal/vertical,
mirror-image bookshelf
Maximum Recommended
Amplifier Power**: 150W 175W
Nominal Impedance: 8 Ohms 8 Ohms
Sensitivity (2.83V/1m): 87dB 89dB
Frequency Response (–3dB): 48Hz –20kHz 45Hz –20kHz
Crossover Frequency(ies): 2000Hz 800Hz, 3200Hz
High-Frequency Transducer: 1" Pure-titanium dome, with 1" Pure-titanium dome, with
rubber surround, shielded; rubber surround, shielded;
Elliptical Oblate Spheroidal™Elliptical Oblate Spheroidal™
(EOS) waveguide (EOS) waveguide
Midrange Transducer: NA 4" PolyPlas™(polymer-coated
cellulose fiber) cone, rubber
surround, shielded; Linear Field
Proximity™(LFP) bezel
Low-Frequency Transducer(s) :6" PolyPlas™(polymer-coated 8" PolyPlas™(polymer-coated
cellulose fiber) cone, rubber cellulose fiber) cone, rubber
surround, SFG™ , magnetic surround, SFG™ , magnetic
shorting rings, high-temp shorting rings, high-temp
oversized Kapton®voice coil, oversized Kapton®voice coil,
HeatScape™motor structure, HeatScape™motor structure,
cast-aluminum baskets, shielded cast-aluminum baskets, shielded
Baffle: Low Diffraction, IsoPower™Low Diffraction, IsoPower™
Port: FreeFlow™flared FreeFlow™flared
Network: Straight-Line Signal Path™(SSP) Straight-Line Signal Path™(SSP)
Terminals: All-metal, gold-plated, 5-way All-metal, gold-plated, 5-way
binding posts binding posts
Dimensions (H x W x D): 17" x 9-1/2" x 9-1/2" In horizontal configuration:
432mm x 241mm x 241mm 11-1/2" x 17-1/2" x 11-3/4"
292mm x 445mm x 298mm
Weight per Speaker: 22 lb/10kg 28 lb/12.7kg
SPECIFICATIONS
6

S310II S312II
Description: 3-Way 10" floorstanding 3-Way 12" floorstanding
Maximum Recommended
Amplifier Power:** 200W 250W
Nominal Impedance: 8 Ohms 8 Ohms
Sensitivity (2.83V/1m): 91dB 92dB
Frequency Response (–3dB): 37Hz –20kHz 35Hz –20kHz
Crossover Frequencies: 850Hz, 3500Hz 750Hz, 3000Hz
High-Frequency Transducer: 1" Pure-titanium dome, with 1" Pure-titanium dome, with
rubber surround, shielded; rubber surround, shielded;
Elliptical Oblate Spheroidal™Elliptical Oblate Spheroidal™
(EOS) waveguide (EOS) waveguide
Midrange Transducer: 4" PolyPlas™(polymer-coated 4" PolyPlas™(polymer-coated
cellulose fiber) cone, rubber cellulose fiber) cone, rubber
surround, shielded; Linear Field surround, shielded; Linear Field
Proximity™(LFP) bezel Proximity™(LFP) bezel
Low-Frequency Transducer(s) :10" PolyPlas™(polymer-coated 12" PolyPlas™(polymer-coated
cellulose fiber) cone, rubber cellulose fiber) cone, rubber
surround, SFG™ , magnetic surround, SFG™ , magnetic
shorting rings, high-temp shorting rings, high-temp
oversized Kapton®voice coil, oversized Kapton®voice coil,
HeatScape™motor structure, HeatScape™motor structure,
cast-aluminum baskets, shielded cast-aluminum baskets, shielded
Baffles: Low Diffraction, IsoPower™Low Diffraction, IsoPower™
Port: FreeFlow™flared FreeFlow™flared
Network: Straight-Line Signal Path™(SSP) Straight-Line Signal Path™(SSP)
Terminals: All-metal, gold-plated, 5-way All-metal, gold-plated, 5-way
binding posts binding posts
Dimensions (H x W x D): 38" x 13" x 12-1/2" 41" x 14-3/4" x 12-1/4"
965mm x 330mm x 318mm 1041mm x 375mm x 311mm
Weight per Speaker: 55 lb/25kg 77 lb/35kg
All features and specifications are subject to change without notice.
*Trademark of Dolby Laboratories.
DTS is a registered trademark of Digital Theater Systems, Inc.
**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.
7

JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797
8500 Balboa Boulevard, Northridge, CA 91329
800-336-4JBL (4525) (USA only)
www.jbl.com
©2001 JBL, Incorporated
JBL is a registered trademark of JBL, Incorporated.
Part No.
338018-001
DESIGN GOAL: Bring the thrill of live performance and movie sound to
the home environment by calling on JBL’s professional engineering leadership.
TWEETER TYPE: Pure-titanium dome with EOS™waveguide
WOOFER TYPE: Cast-aluminum basket with HeatScape™motor structure
CROSSOVER NETWORK: Straight-Line Signal Path™(SSP)
PORT DESIGN: FreeFlow™flared
PROFESSIONAL REFERENCE: Studio Monitor
OWNER’S GUIDE PRO SOUND
COMES HOME™
PRODUCT LINE: STUDIO
™
SERIES
MODEL
S26II, S38II, S310II,S312II
NUMBERS: