ABOUT THE LX POWER AMPLIFIERS
Thank you for purchasing an LX Power Amplifier, a reference-qual- ity amplifier designed to meet the highest standards of power and performance under even the most extreme operating conditions. Equipped with advanced thermal, DC, and speaker protection, the LX amplifiers deliver reliable and exceptional performance with most loudspeakers, including mismatched, reactive, and unusual loads. In addition, the LX amplifiers include protection against short circuits, component failures, miswiring, and internal faults.
Available in five or seven channel versions, the LX amplifiers deliver high-power performance. Each 200-Watt channel includes four custom-designed, hand-graded output transistors as well as a 160-volt power supply for extra headroom. Bridgeable architecture allows the first four 200-Watt channels to be configured with up to two 400-Watt channels for even higher-power output. Non- bridged channels are compatible with speaker impedances of 2Ω and above, and bridged channels are compatible with speaker impedances of 4Ω and above.
Complemented by the heavy-duty, gold-plated speaker output connectors, the rear panel includes selectable balanced or unbal- anced audio input on RCA and XLR or 1/4-inch Tip/Ring/Sleeve connectors. A trigger input connector allows the LX amplifiers to be controlled with associated components such as the MC-12 or MC-8 Digital Controller. In addition, a ground lift switch can be used to eliminate audible hum caused from multiple grounding paths.
The LX amplifiers feature a Junction Temperature Simulation (JTS) computer that predicts the internal temperature of each output transistor to prevent overheating. Unlike similar technologies, JTS combines the output voltage and current of each output transistor
with heatsink temperatures to arrive at an accurate internal tem- perature prediction. As a result, JTS prevents overheating even when heatsink temperatures are relatively cool, allowing the LX amplifiers to achieve maximum performance and reliability from the output transistors.
In addition to JTS, the LX amplifiers include advanced thermal and DC protection for each channel. Thermal protection automatically deactivates channels exceeding 115°C, while DC protection pre- vents DC and frequencies below 10Hz from reaching the speakers. Dedicated, multi-colored channel status LEDs are located on the front panel to provide at-a-glance viewing of channel status at all times.
With THX Ultra Certification, the LX amplifiers are certified to meet the highest THX standards. Advanced thermal, DC, and speaker protection further guarantee an exceptional performance under even the most extreme operating conditions. Add to this incredible power and wide-ranging flexibility, and the LX amplifiers are at home in the most sophisticated and demanding home theaters.
