Lexicon CX Getting Started

Getting Started Lexicon

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Thank you for purchasing a CX Power Amplifier, a reference-quali-

ty amplifier, which is based on the award-winning LX amplifier and

is designed to meet the highest standards of power and perform-

ance under even the most extreme operating conditions. Equipped

with advanced thermal, current, DC, and speaker protection, the

CX amplifiers deliver reliable and exceptional performance with

most loudspeakers, including mismatched, reactive, and unusual

loads. In addition, the CX amplifiers include protection against

short circuits, component failures, miswiring, and internal faults.

Available in seven or five channel versions, the CX amplifiers

deliver high-power performance. Each 140-Watt channel includes

four custom-designed, hand-graded output transistors All chan-

nels are capable of driving speaker impedances of 2Ωand above.

Complemented by gold-plated speaker output connectors, the rear

panel includes selectable balanced or unbalanced audio input via

RCA and XLR connectors. A trigger input connector allows the CX

amplifiers to be controlled with associated components such as the

MC-12 or MC-8 Digital Controller. In addition, a ground lift switch

for each channel can be used to eliminate audible hum caused by

multiple grounding paths.

The CX amplifiers include advanced thermal, current, and DC

protection for each channel. Thermal protection monitors the

temperature of the chassis and heatsinks and automatically deacti-

vates the specific channel(s) when they exceed their normal safe

operating temperature. Current protection ensures that the

output transistors are protected by limiting the current capability

which is determined by the output voltage, while DC protection

prevents DC and frequencies below 10Hz from reaching the speak-

ers. Dedicated channel status LEDs are located on the front panel

to provide at-a-glance viewing of channel status at all times.

With THX Ultra2 Certification, the CX amplifiers are certified to

meet the highest THX standards. Advanced thermal, current, DC,

and speaker protection further guarantee exceptional performance

under even the most extreme operating conditions. Add to this

incredible power and wide-ranging flexibility, and the CX ampli-

fiers are at home in the most sophisticated and demanding home

theaters.