JBL S4800, Руководство пользователя

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045TI PURE-TITANIUM
DIAPHRAGM/
NEODYMIUM MAGNET
ULTRAHIGH-FREQUENCY
COMPRESSION DRIVER
See Figure 5.
The 045Ti utilizes the same princi-
ples as the 435AL, in a smaller foot-
print so that a frequency response
up to 40kHz can be achieved.
INTERNAL CROSSOVER
NETWORK
Each loudspeaker unit has two
internal dividing networks, one for
the LF transducers and one for the
combined HF and UHF transducers.
The low-frequency section inter-
faces with the external main con-
trol panel for input connections and
switch functions. They also employ
massive air core inductors for the
best possible sonic characteristics
and lowest possible coloration.
All internal connections use propri-
etary Monster Cable,
® and all criti-
cal connections are gold-plated for
long life. Capacitors are ultrahigh-
grade polypropylene for extremely
low loss. All switches and compo-
nents are of the highest quality for
long life and reduced distortion of
all types.
The network also facilitates bi-
wiring as necessary, using short-
ing straps where only a single-
wire connection is desired.
The HF trim control allows fine-tun-
ing of the high-frequency output
level to the acoustics of the lis-
tening space as well as to the
listener’s liking.
EXTERNAL
CONNECTIONS
The all-metal, gold-plated, 5-way
binding-post input connectors
provide for bi-wiring, which is
explained in detail later in this
guide.
ENCLOSURES
The enclosure design of the S4800
minimizes coloration by dramati-
cally reducing panel radiation. It is
constructed from 1-inch (25mm)-
thick MDF.
The enclosure’s unusual thickness,
along with the SonoGlass horn
assembly, add up to the lowest-
vibration, most acoustically inert
loudspeaker enclosure presently
possible to construct. Enclosures
are finished with a high-gloss
polyurethane lacquer.
7
Phase Plug
Aluminum-
Alloy Cover
Edge-Wound
Aluminum Voice Coil
Stainless-
Steel Mounting
Bracket
1" (25mm)
Pure-Titanium
Diaphragm
Neodymium
Magnet
Gold-Plated
Input Terminal
Figure 5. Cutaway view of 045Ti ultrahigh-frequency transducer.
S4800 OM 10/11/05 1:51 PM Page 7