JBL S4800 manual Internal Crossover Network, External Connections, Enclosures

Aluminum-

Alloy Cover

Phase Plug

Neody m

Magnet

WoundEdge-
minuAlu	m Voice Coil

1" (25mm)

TitaniumPure- ragm Diaph

Stainless- Steel Mounting

ketBrac

ated-Pl Gold Input Terminal

Figure 5. Cutaway view of 045Ti ultrahigh-frequency transducer.

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.

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