OWNER’S GUIDE
PRODUCT LINE:
MODEL
NUMBERS:
DESIGN GOAL: Bring the thrill of live performance and movie sound to
the homeenvironment bycalling on JBL’s professional engineering leadership.
TWEETER TYPE: Pure-titanium dome with EOS™ waveguide
WOOFER TYPE:
CROSSOVER NETWORK: Straight-Line Signal Path™ (SSP)
PORT DESIGN: FreeFlow™ flared
PROFESSIONAL REFERENCE: Studio Monitor
STUDIO SERIES
S26,S38,S310,S312
Cast-aluminum basket with HeatScape™ motor structure
PRO SOUND
COMES HOME
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
©1999 JBL, Incorporated.
JBL is a registered trademark of JBL, Incorporated.
Part No.
S26/38/310/312 O/G
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OWNER’S GUIDE
PRODUCT LINE:
MODEL
NUMBERS:
DESIGN GOAL: Bring the thrill of live performance and movie sound to
the homeenvironment bycalling on JBL’s professional engineering leadership.
TWEETER TYPE: Pure-titanium dome with EOS™ waveguide
WOOFER TYPE:
CROSSOVER NETWORK: Straight-Line Signal Path™ (SSP)
PORT DESIGN: FreeFlow™ flared
PROFESSIONAL REFERENCE:Studio Monitor
STUDIO SERIES
S 26,S38,S310,S312
Cast-aluminum basket with HeatScape™ motor structure
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THANK YOU FOR CHOOSING JBL
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
Declaration of Conformity
We, JBL Europe A/S
Kongevejen 194B
DK-3460 Birkerød
DENMARK
declare in own responsibility, that the loudspeakers
described in this owner’s manual (model numbers
S26, S38, and S310 only) are in compliance with
technical standards
EN 50081-1:1992
EN 50082-1:1992
Steen Michaelsen
JBL Europe A/S
Birkerød. DENMARK. 8/99
2
Less than 6 – 8 feet
More than 6 – 8 feet
0-2 ft.
SPEAKER PLACEMENT
5 – 6 ft.
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
MODELS:S310,S312
MODEL:S26
As Front Speakers
MODEL:S38
loudspeakers. Use these
placement recommendations
as a guide. Slight variations
will not diminish your
listening pleasure.
As Surround Speakers
All of the Studio Series
loudspeakers are videoshielded and can safely be
placed near a television.
The S38 can be oriented
either horizontally or
vertically; however, best
performance will result from
For stereo-only applications:
For Home Theater applications:
horizontal placement.
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.
A wider stereo image is
presented with the
tweeter/midrange array
outboard, and a tighter image
is presented with the array
inboard.
This placement provides a
wide spread in sound,
supplemented by the centerchannel speaker.
3
SPEAKER CONNECTIONS
– +– +
– +
Speaker Outputs
LEFT
RIGHT
– +
Without pad With pad
CONNECTION TIPS
MODELS S310 & S312
Speakers and electronics
terminals have corresponding (+) 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.
These models are shipped
with four self-adhesive
nonskid pads that are to be
used when the loudspeaker is intended to be
placed on a smoothsurfaced floor, such as tile
or hardwood. Gently lay
the speaker on its side (not
4
its front or back) on a soft
nonabrasive surface.
Attach each pad to
the bottom of its foot in
the widest portion of the
recessed area.
DO NOT attach the pads if
the speaker will be placed
on carpeting.
drag the speaker
NEVER
to move it, as this will
damage the pads, the feet
and/or the wood cabinet
itself. Always lift the
speaker and carry it to its
new location.
TROUBLESHOOTING
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 all wires are
connected. Make sure
none of the speaker wires
are frayed, cut or
punctured.
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.
If there is no sound from
the center speaker:
• Make sure that your
receiver’s “CenterChannel” mode is in the
”Normal“ or ”Wide“
position. If it is in the
”Phantom“ position, the
center speaker will not
play.
• Check all connections
between processor/
amplifier and the center
speaker.
5
SPECIFICATIONS
S26 S38
Description: 2-Way 6" bookshelf 3-Way 8" horizontal,
mirror-image bookshelf
Maximum Recommended
Amplifier Power*: 150W 175W
Nominal Impedance: 8 Ohms 8 Ohms
Sensitivity (2.83V/1m):
Frequency Response (–3dB):
Crossover Frequency: 2000Hz 800, 3200Hz
High-Frequency Transducer: 1" Pure-titanium dome, with 1" Pure-titanium dome, with
Midrange Transducer: NA 4" PolyPlas™ (polymer-coated
Low-Frequency Transducer(s)
Baffle: Low Diffraction, IsoPower™ Low Diffraction, IsoPower™
Network: Straight-Line Signal Path™ (SSP) Straight-Line Signal Path™ (SSP)
Terminals: All-metal, gold-plated, 5-way All-metal, gold-plated, 5-way
Dimensions (H x W x D): 17" x 10" x 10" 11-1/2" x 17-1/2" x 12-7/8"
Weight per Speaker: 22lbs, 10kgs 28lbs, 12.7kgs
87dB 89dB
48Hz – 20kHz 45Hz – 20kHz
rubber surround, shielded; rubber surround, shielded;
Elliptical Oblate Spheroidal™ Elliptical Oblate Spheroidal™
(EOS) waveguide (EOS) waveguide
cellulose fiber) cone, rubber
surround, shielded; Linear Field
Proximity™ (LFP) bezel
: 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
coil, HeatScape™ motor HeatScape™ motor structure,
structure, cast-aluminum cast-aluminum baskets, shielded
baskets, shielded
Port: FreeFlow™ flared FreeFlow™ flared
binding posts binding posts
432mm x 254mm x 254mm 292mm x 445mm x 327mm
®
voice oversized Kapton®voice coil,
6
S310 S312
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):
Frequency Response (–3dB):
Crossover Frequencies: 850, 3500Hz 750, 3000Hz
High-Frequency Transducer: 1" Pure-titanium dome, with 1" Pure-titanium dome, with
Midrange Transducer: 4" PolyPlas™ (polymer-coated 4" PolyPlas™ (polymer-coated
Low-Frequency Transducer(s)
Baffles: Low Diffraction, IsoPower™ Low Diffraction, IsoPower™
Network: Straight-Line Signal Path™ (SSP) Straight-Line Signal Path™ (SSP)
Terminals: All-metal, gold-plated, 5-way All-metal, gold-plated, 5-way
Dimensions (H x W x D): 34-1/2" x 13" x 12" 41" x 16" x 12-7/8"
Weight per Speaker: 50lbs, 22.7kgs 68lbs, 31kgs
91dB 92dB
40Hz – 20kHz 35Hz – 20kHz
rubber surround, shielded; rubber surround, shielded;
Elliptical Oblate Spheroidal™ Elliptical Oblate Spheroidal™
(EOS) waveguide (EOS) waveguide
cellulose fiber) cone, rubber cellulose fiber) cone, rubber
surround, shielded; Linear Field surround, shielded; Linear Field
Proximity™ (LFP) bezel Proximity™ (LFP) bezel
: 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
HeatScape™ motor structure, HeatScape™ motor structure,
cast-aluminum baskets, shielded cast-aluminum baskets, shielded
Port: FreeFlow™ flared FreeFlow™ flared
binding posts binding posts
876mm x 330mm x 305mm 1041mm x 406mm x 327mm
®
voice coil, oversized Kapton®voice coil,
*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.
7
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