Lexicon CX-7, CX-5 manual Getting Started, About The Cx Power Amplifiers, Lexicon

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Getting Started

Getting Started

Lexicon

ABOUT THE CX POWER AMPLIFIERS

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 2Ω and 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.

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Contents LX CX Power Amplifier Power AmplifierUser Guide User Guide IMPORTANT SAFETY INSTRUCTIONS DOCUMENTATION CONVENTIONS Section 1 Getting Started Section 3 Troubleshooting and MaintenanceIntroduction IntroductionFR DÉBALLER ET INSPECTIÓN US UNPACKING AND INSPECTIONDE AUSPACKEND UND INSPEKTION ES DESEMPAQUETANDO E INSPECCIÓNHighlights Getting StartedGetting Started ABOUT THE CX POWER AMPLIFIERSLexicon Getting Started INSTALLATION CONSIDERATIONSHIGHLIGHTS CX Power AmplifiersBasic Operation Lexicon Basic OperationFRONT PANEL OVERVIEW 1. Standby ButtonBasic Operation 2. Channel Status LEDsCX Power Amplifiers When the main power transformer temperatureThe CX-7rear panel is shown above. The CX-5rear REAR PANEL OVERVIEWBasic Operation Lexicon4. OUTPUT 1 to 7 CX-7or 1 to 5 CX-5 1. Power Switch2. AC Input Connector 3. INPUT 1 to 7 CX-7or 1 to 5 CX-5Basic Operation REAR PANEL OVERVIEW continuedLexicon 7. TRIGGER INPUT 5. UNBAL/BAL Switch6. GROUND LIFT Switches 8. TRIGGER INPUT SwitchDC PROTECTION PROTECTION MODESTHERMAL PROTECTION CURRENT PROTECTIONTroubleshooting & Maintenance TROUBLESHOOTING Troubleshooting & MaintenanceLexicon Troubleshooting & Maintenance MAINTENANCECX Power Amplifiers Appendix Appendix SPECIFICATIONSAudio Input Connectors Audio Output ConnectorsDECLARATION OF CONFORMITY AppendixCX Power Amplifiers Rear Panel IndexFront Panel 2-2toHow is Service Obtained? LIMITED WARRANTYWhat is the Duration of this Warranty? What is Covered?Harman Specialty Group 3 Oak Park ServicePOSTAGE WILL BE PAID BY ADDRESSEE UNITED STATES