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Congratulations on purchasing this JBL Synthesis
®
Three Array
™
home theater speaker. This product represents the
synthesis of everything that JBL has learned about the emotional power of audio and video in sixty years of preemi-
nence in the field. It sets new benchmarks in the use of “high technology” and provides you with the experience of
being in some of the world’s greatest movie houses and concert halls, right at home! JBL’s Synthesis Three Array
speaker systems feature the following:
THX ULTRA2
™
-LICENSED HOME 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.
ULTRAHIGH-FREQUENCY COMPRESSION DRIVER: 1" (25mm) Pure-titanium compression driver with aluminum
edge-wound voice coil and 2" (51mm) neodymium motor assembly
, mounted in a constant-directivity horn for extended
high-frequency response to exceed SACD
™
and DVD-Audio specifications.
High-Power Compression Horn: Horns are commonplace in movie theaters across the world, because of
their high power handling and well-defined high-frequency output. The horns employed in SAM3 have very low dis-
tortion, and a well-controlled directivity, to put the dialogue at the center of the screen and the effects all around you.
ACCURATE MID-BASS DRIVERS AND SUBWOOFERS: The 6-1/2" (165mm) mid-bass drivers incorporate many
of JBL’s patented technologies – such as Symmetrical Field Geometry
™
(SFG), Symmetrical Inductance Modulation
(SIM) and Vented Gap Cooling
™
(VGC) – as well as unique cone and dome materials, to provide tight, smooth
midrange sound without harshness, stridency or listener fatigue. From two to as many as four 12" or 15" (305mm or
380mm) high-power subwoofers complete the experience with earth-shattering, deep bass.
COMMON VOICING: Synthesis Three Array uses 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 mon-
itors without generating interference or distorting the picture.
DUAL “INSIDE” NEODYMIUM, SHIELDED MOTOR STRUCTURE: The magnetic material is placed at the
center of the motor structure, INSIDE the voice coil diameter. This inverted dual-magnet configuration improves
magnetic shielding even further, reducing the extraneous magnetic field, and offers increased acoustic output.
DEEP-ANODIZED CONE
AND
DOME MA
TERIAL
: The special deep-anodized aluminum cone and dome material,
together with the motor features, helps to reduce midband distortions to very low levels (approximately 50dB to 60dB
below the fundamental signal driven at 100dB output).
TWO-STAGE PHASE PLUG: The phase plug is a key element in this compression driver. The accuracy of the phase
plug geometry is most important to achieve a wide and flat frequency response. The pressure distribution in the phase
plug is manipulated by adjustments to the number and width of the slots and even the plug inside streamline is opti-
mized to achieve a coherent pressure front across the operating range at the exit of the phase plug.
SYMMETRICAL INDUCTANCE MODULATION (SIM): The flux-stabilizing ring and copper gap ring are also opti-
mized for size and position, to help minimize or eliminate “asymmetrical inductance modulation
.
” Minimizing this
asymmetrical inductance modulation leads to even further distortion reduction and improved vocal clarity
.
3
INTRODUCTION
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