JBL S4VC User Manual
SYNTHESIS®FOUR
S4VC, S4HC
& S4Ai
LUSH-MOUNT
F
LOUDSPEAKERS
OWNER
MANUAL
’
S AND INSTALLER
’
S
CONTENTS
INTRODUCTION ......................................................................................................................................................3
NCLUDED.............................................................................................................................................................4
I
PEAKER PLACEMENT .............................................................................................................................................5
S
EFT AND RIGHT SPEAKERS ..............................................................................................................................5
L
ENTER CHANNEL SPEAKERS ...........................................................................................................................5
C
MBIENT SURROUND SPEAKERS .......................................................................................................................6
A
HANNEL SYSTEMS ..........................................................................................................................6
5.1-C
HANNEL SYSTEMS ..........................................................................................................................6
6.1-C
HANNEL SYSTEMS ..........................................................................................................................7
7.1-C
S4Ai M
S4Ai W
W
P
S4Ai O
S4Ai D
OUNTING THE SPEAKERS ....................................................................................................................................10
M
PEAKER-MOUNTING OPTIONS .......................................................................................................................10
S
EQUIREMENTS FOR MOUNTING .....................................................................................................................11
R
ONNECTING THE SPEAKERS TO THE REST OF YOUR SYSTEM.......................................................................................13
C
REPARING THE HOOKUP WIRE .......................................................................................................................13
P
ROUBLESHOOTING...............................................................................................................................................14
T
PECIFICATIONS...................................................................................................................................................15
S
ODES OF OPERATION ...................................................................................................................7
IRING GUIDE ..............................................................................................................................7
HICH DIFFUSE MODE IS THE RIGHT ONE FOR THE JOB? .............................................................................8
REPARING THE S4Ai FOR THE CORRECT OPERATIONAL MODE........................................................................8
RIENTATION – VERTICAL OR HORIZONTAL..........................................................................................9
UAL-DRIVE MODE......................................................................................................................10
INTRODUCTION
Thank you for purchasing JBL Synthesis®Four flush-mount home theater loudspeakers. These products represent the
synthesis of everything that JBL, Inc., has learned about the emotional power of audio and video in more than sixty
years of preeminence in the field. They set new benchmarks in the use of “high technology” and provide you with
the experience of being in the world’s greatest movie houses and concert halls – right at home! JBL Synthesis Four
speaker systems feature the following:
THX™ULTRA2™-LICENSED HOME AUDIO SYSTEM: When used with a THX
speaker system will deliver a state-of-the-art THX home theater experience to your living room. You will hear in
your home exactly what the director and sound engineer heard in the recording studio. The system will reproduce
the audio flawlessly and without distortion.
®
controller and amplifiers, your
FLUSH-MOUNT APPEARANCE: The S4Ai, S4VC and S4HC are designed to fit flush to your wall surface.
Designers and interior decorators will be pleased by their hidden appearance and stunning performance.
PURE-T ITANIUM, HIGH-FREQUENCY TRANSDUCER DOME:
magnet structures are ultralight to accurately reproduce lightning-fast sounds – such as cymbal crashes –
extremely rigid to eliminate distortion and ear fatigue.
ELLIPTICAL OBLATE SPHEROIDAL™(EOS) WAVEGUIDE: First developed for our JBL
monitors, this unique structure enables Synthesis Four Series speakers to evenly disperse high frequencies, creating
precise imaging over a wide listening area.
The pure-titanium diaphragms with neodymium
yet
®
Professional LSR studio
PURE-T ITANIUM, INVERTED-DOME, MIDRANGE TRANSDUCERS (S4VC, S4HC): The midrange drivers
seamlessly complement the titanium-dome tweeter and offer nearly perfect pistonic motion, which eliminates the
uncontrollable flexing found in conventional cones. The inverted dome is driven precisely at its center, which cancels
resonances inherent in cone materials. The result is ruler-flat frequency response beyond the crossover point.
TITANIUM-ALLOY, INVERTED-DOME, LOW-FREQUENCY TRANSDUCERS (S4VC, S4HC): The low-
frequency drivers deliver precise, undistorted bass reproduction that matches the titanium tweeter and midrange.
The powerful neodymium magnet provides its own video shielding, allowing for flexible placement near video
monitors. Cast-aluminum frames remain rigid even at the highest volumes, avoiding the distortion found in some
other speaker designs. The aluminum doesn’t affect the magnetic field, so driver movement is precise.
COMMON VOICING: Synthesis Four speaker systems use common voicing across the front three channels. Since
identical drivers are used, each speaker has the same tonal qualities; thus, as a sound is panned from one side to the
other, there will be no change in timbre.
MAGNETIC SHIELDING: All front speakers are magnetically shielded, allowing you to place them near video
monitors without generating interference or distorting the picture. (The S4Ai is not magnetically shielded.)
3
INCLUDED
or or
One S4VC vertical channel
flush-mount loudspeaker
Eight 8-32 x 1/2" screws for
speaker installation
One S4HC horizontal channel
flush-mount loudspeaker
Four mounting L-brackets with
eight 1/4-20 x 3/4" screws
One S4Ai multipole ambient
flush-mount loudspeaker
One grille with grille frame
4
SPEAKER PLACEMENT
Positioning your loudspeakers properly is critical in order to achieve the
sonic performance of a home theater. Please read the following section
for guidance in correct and optimal placement.
LEFT AND RIGHT SPEAKERS: If you have purchased a Synthesis Four
digital home theater system, then the S4VC model will serve as your
front left and right main speakers.
Since the left and right speakers have been designed for maximum localization
of sound, they should be placed with the center of the speakers at about the
same height on screen as the actors would be, to aid in the illusion that the
actors’ voices are coming directly from their on-screen images. Ideally, the
speakers will be placed about 45 degrees apart from each other,
from the listening position, so that the distance between the speakers
same as each speaker’s distance from the listener (see Figure 1).
CENTER CHANNEL SPEAKERS
viewed
is the
RCL
VIEWING
POSITION
FLOOR PLAN
Figure 1. 5.1-Channel system
S4VC: If you have purchased the vertical channel speaker (model S4VC)
for the center position, be sure to place it vertically during installation in
order to take advantage of its sound-dispersion characteristics. If you mount
it horizontally, it will not provide the correct dispersion pattern. If the speaker
is being used with a perforated projection screen, it should be mounted
behind the center of the screen (see Figure 2). If a nonperforated projection
screen, plasma display or other fixed video device is being used in the
installation, the preferred center speaker is the model S4HC (below).
S4HC: If you have purchased the horizontal channel speaker (model S4HC)
for the center position, be sure to position it horizontally during installation
in order to take advantage of its sound-dispersion characteristics. If you
mount it vertically, it will not provide the correct dispersion pattern.
Although the preferred speaker model to be used with a perforated projection screen is the vertical model S4VC (above), the S4HC horizontal speaker
may be used instead and should be mounted behind the center of the
screen. If a nonperforated projection screen, plasma display or other fixed
video device is being used in the installation, then the recommended
location is directly below and as close as possible to the video display
(see Figure 3), although the inverse of this method will work also.
Figure 2.
Figure 3.
5
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