About The Lx Power Amplifiers; Highlights - Lexicon LX-7 User Manual

Getting Started

ABOUT THE LX POWER AMPLIFIERS

Thank you for purchasing an LX Power Amplifier. The LX amplifiers
are designed to meet the highest standards of performance and
sound quality. In addition, THX Ultra Certification ensures that the
amplifiers meet the highest standards set forth by Lucasfilm's Home
THX division.
The LX amplifiers include many unique technologies that allow
them to deliver exceptional performance, even under extreme
operating conditions. The amplifiers feature Junction Temperature
Simulation (JTS) advanced thermal protection. An internal JTS
computer predicts internal temperatures and protects output
transistors from overheating, allowing the amplifiers to achieve
maximum performance with a minimum number of output
transistors. This design enhances performance and reliability.
In addition to JTS, the LX amplifiers feature thermal protection for
each channel and the main power transformer. The amplifiers also
provide DC protection for each channel, preventing DC and
frequencies below 10Hz from reaching the speakers.
The LX amplifiers offer high-power output that can be configured
for almost any system. The LX-7 has seven 200W channels, and the
LX-5 has five 200W channels. Both amplifiers can be bridged to
provide as many as two 400W channels, in addition to the
remaining 200W channels. Heavy-duty speaker outputs and
selectable balanced or unbalanced audio inputs are also available.
A rear panel TRIGGER INPUT allows the LX amplifiers to be
powered on and off by external devices. A GROUND LIFT switch
helps eliminate audible hum caused by multiple grounding paths
in the system.
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Built to Lexicon standards, the LX Power Amplifiers establish a new
benchmark for home theater amplifiers. An unbeatable
combination of sound quality, power, flexibility, and reliability
makes these amplifiers at home in virtually any system.

HIGHLIGHTS

• 200W per channel
• Four custom designed, hand-graded output transistors per
channel
• Bridgeable architecture for higher power output (400W at 8Ω)
• Oversized toroidal power transformer with extraordinarily low
DC resistance and thermal protection
• High-power supply voltage (160V) for extra headroom at the
outputs
• THX Ultra Certification
• Junction Temperature Simulation (JTS) to provide maximum
performance from output transistors
• Thermal protection against overheating
• Speaker protection against DC and frequencies below 10Hz
• Protection against short circuits, device failures, miswiring, and
internal faults
• Stable with mismatched, reactive, or unusual loads
• Quiet, microprocessor controlled, forced-air cooling to
minimize chassis size
• Compatible with 2Ω speaker impedances (INDIVIDUAL Mode)
• Trigger input for power control from an external device
• RCA, XLR, and 1/4-inch Tip/Ring/Sleeve inputs
• Ground lift switch
• Heavy-duty gold plated outputs
• Multi-color channel status LEDs
• Rack-mount option available
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