Lexicon LX - REV 3 User Manual
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Lexicon LX - REV 3 User Manual

Lexicon LX - REV 3 User Manual

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Power Amplifier
User Guide

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Summary of Contents for Lexicon LX - REV 3

  • Page 1 Power Amplifier User Guide...

  • Page 2: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. In CE countries, this amplifier is considered “professional equipment.” In order to comply with CE requirements, the customer is required to obtain permission from the local supply authority before connecting this equipment.
  • Page 3 781-280-0495 (Sales) 781-280-0499 (Service) This document should not be construed as a commitment on the part of Lexicon, Inc. The information it contains is subject to change without notice. Lexicon, Inc. assumes Lexicon Part No. 070-14876 | Rev 3 | 03/03...

  • Page 4: Table Of Contents

    Introduction Lexicon Introduction Section 1: Getting Started About the LX Power Amplifiers ..... . . 1-2 Highlights Unpacking and Inspection ..... .iii Product Registration .

  • Page 5: Introduction

    Introduction LX Power Amplifiers UNPACKING AND INSPECTION DÉBALLER ET INSPECTIÓN After unpacking the unit, save all packing materials in case the unit Après avoir déballé l'unité, sauve toutes les matières de l'emballage ever needs to be shipped. Thoroughly inspect the modules and au cas où...

  • Page 6: Section 1: Getting Started

    Getting Started About the LX Power Amplifiers ..........1-2 Highlights Product Registration .

  • Page 7: About The Lx Power Amplifiers

    Getting Started Lexicon ABOUT THE LX POWER AMPLIFIERS with heatsink temperatures to arrive at an accurate internal tem- perature prediction. As a result, JTS prevents overheating even Thank you for purchasing an LX Power Amplifier, a reference-qual- when heatsink temperatures are relatively cool, allowing the LX...

  • Page 8: Highlights

    • 200W per channel Please register the LX Power Amplifier within 15 days of purchase. To do so, register online at www.lexicon.com or complete and • Four custom designed, hand-graded output transistors per return the product registration card attached to the back cover of channel this user guide.
  • Page 9 Basic Operation Front Panel Overview............2-2 Rear Panel Overview .

  • Page 10: Front Panel Overview

    Basic Operation Lexicon FRONT PANEL OVERVIEW flashes rapidly and the blue channel status LEDs do not light, 1. Standby Button the incoming AC voltage is too low or the temperature of the Activates and deactivates standby mode when the LX amplifier transformer is too high.
  • Page 11 Basic Operation LX Power Amplifiers 2. Channel Status LEDs Color Status (Continued) Provide at-a-glance view of the status of each channel as indicated in the table below: Constant Red A fault in the channel. Refer to Section 3 for troubleshooting Color Status information.

  • Page 12: Rear Panel Overview

    Basic Operation Lexicon REAR PANEL OVERVIEW The LX-7 rear panel is shown above. The LX-5 rear panel is shown on page 2-6. The rear panels are similar, except the LX-7 amplifier includes two additional channels. External wiring connected to connectors marked with the...
  • Page 13 Basic Operation LX Power Amplifiers 1. Power Switch 4. OUTPUT 1 to 7 (LX-7) or 1 to 5 (LX-5) Disconnects power to the AC Input Connector. Set this switch Provide audio output for the speakers. OUTPUT connectors can to off when making or breaking connections to the amplifier, accept bare speaker wires, banana plug connectors, or certain or when changing the setting of the MODE switch.
  • Page 14 Basic Operation Lexicon REAR PANEL OVERVIEW (continued) The LX-5 rear panel is shown above. The LX-7 rear panel shown page 2-4. Both similar, except the LX-7 features two additional channels. External wiring connected to connectors marked with the WARNING triangle pictured at the left requires installation by an...
  • Page 15 Basic Operation LX Power Amplifiers 5. MODE Switch 8. TRIGGER INPUT (continued from page 2-5) Make sure the amplifier is powered off when the MODE switch Enables the amplifier to be controlled by the MC-12/MC-8 or setting is changed. other external devices with a 12V DC trigger output. Connect the trigger output of the external device to the TRIGGER INPUT of the amplifer, and set the TRIGGER switch on the amplifier to INPUTs and OUTPUTs used in (BRIDGED) mode are labelled in...

  • Page 16: Cooling System

    Basic Operation Lexicon COOLING SYSTEM JTS’s dynamic nature enables it to avoid the problems inherent in competing products that rely only on heatsink temperatures. The LX Power Amplifiers use temperature-controlled fans to Heatsink temperatures do not always correlate to the temperatures exhaust heat.
  • Page 17 Basic Operation LX Power Amplifiers DC PROTECTION Each channel includes DC protection to prevent DC and frequencies below 10Hz from reaching the speakers. If this protection activates, the output relay will open and the corresponding front panel channel status LED will no longer be lit. After approximately 4-seconds,...
  • Page 18 Troubleshooting & Maintenance Troubleshooting ............3-2 Maintenance .

  • Page 19: Troubleshooting

    2. Check the airflow around the amplifier and take the following measures: A channel status LED is lit red. • Provide additional cooling. 1. Contact an authorized Lexicon dealer or Lexicon customer • Make sure speakers have adequate impedance ratings (see service. page 2-5).

  • Page 20: Maintenance

    The amplifier and other electrical devices in the listening room suddenly lose power. 1. Reset the circuit breakers for the affected device(s). If all else fails . . . 1. Contact an authorized Lexicon dealer. 2. Contact Lexicon customer service. Note: Visit www.lexicon.com for answers to frequently asked questions and additional troubleshooting information.

  • Page 21: Appendix

    Appendix Specifications ................A-2 Declaration of Conformity.

  • Page 22: Specifications

    Appendix Lexicon SPECIFICATIONS Audio Input Connectors Performance (Continued) LX-7 • 7 RCA, 7 XLR (including 1/4-inch Tip/Ring/Sleeve) Signal-to-Noise Ratio • 111dB 22kHz bandwidth, balanced inputs LX-5 • 5 RCA, 5 XLR (including 1/4-inch Tip/Ring/Sleeve) • 109dB Audio Output Connectors 22kHz bandwidth, unbalanced inputs LX-7 •...
  • Page 23 Appendix LX Power Amplifiers Other (Continued) Weight LX-7 • 56lbs (25.4kg) LX-5 • 52lbs (23.6kg) Rack Mounting Optional brackets are available for mounting either amplifier in stan- dard 9-inch equipment rack Specifications are subject to change without notice...

  • Page 24: Declaration Of Conformity

    Bedford, MA 01730-1441 USA The equipment identified here conforms to the Directive(s) and Standard(s) specified above. Type of Equipment: LX-5 and LX-7 Power Amplifiers Model: Lexicon LX-5 and LX-7 Date: March 2003 Lexicon, Inc. Vice President of Engineering 3 Oak Park...

  • Page 25: Index

    Index (BRIDGED) Mode ..... .2-5, 2-7 Junction Temperature Simulation (JTS) ..2-8 Registration, Product .

  • Page 26: Limited Warranty

    How is Service Obtained? What Certain Damages are Excluded? When this product needs service, write, telephone, or fax Lexicon’s liability for a defective product is limited to repair or What is Covered? Lexicon, Inc. to request information about where the unit replacement of that product, at our option.
  • Page 27 Lexicon, Inc. 3 Oak Park Bedford, MA 01730-1413 USA 781-280-0300 781-280-0490 www.lexicon.com Customer Support 781-280-0300 781-280-0495 (Sales) 781-280-0499 (Service) Lexicon Part No. 070-14876 | Rev 3 | 03/03...

This manual is also suitable for:

Lx-5Lx-7

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