JBL S4Ai, S4VC, S4HC I

Thank you for purchasing JBL Synthesis®Four flush-mount home theater loudspeakers. These products represent the

synthesis of everything that JBL®has learned about the emotional power of audio and video in more than fifty years of

preeminence in the field. They set new benchmarks in the use of “high technology” and provide you with the experi-

ence of being in the world’s greatest movie houses and concert halls – right at home! JBLSynthesis Four

speaker systems feature the following:

THX ULTRA2™-LICENSEDHOME AUDIO SYSTEM:When used with a THX®controller and amplifiers, your

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.

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-TITANIUM,HIGH-FREQUENCY TRANSDUCER DOME:

The pure-titanium diaphragms with neodymium

magnet structures are ultralight to accurately reproduce lightning-fast sounds – such as cymbal crashes –

yet

extremely rigid to eliminate distortion and ear fatigue.

ELLIPTICAL OBLATESPHEROIDAL™(EOS™) WAVEGUIDE:First developed for our JBL Professional LSR studio

monitors, this unique structure enables Synthesis Four Series speakers to evenly disperse high frequencies, creating

precise imaging over a wide listening area.

PURE-TITANIUM,INVERTED-DOME, MIDRANGE TRANSDUCERS:The midrange drivers seamlessly comple-

ment 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: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 (S4VC and S4HC), 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.

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.

monitors without generating interference or distorting the picture. (S4Ai is not magnetically shielded.)

INTRODUCTION