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Lexicon CX-7 manual

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Table of contents for the manual

  • Page 1

    LX Po wer Amplif ier User Guide CX Po wer Amplif ier User Guide[...]

  • Page 2

    IMPOR T ANT SAFETY INSTR UCTIONS 1) Read these instructions. 2) K eep these instructions. 3) Heed all warnings. 4) Follo w all instructions. 5) Do not use this apparatus near water . 6) Clean only with a dr y cloth. 7) In CE countries, this amplifier is considered “prof essional equipment. ” In order to comply with CE requirements, the customer[...]

  • Page 3

    DOCUMENT A TION CONVENTIONS This document contains general saf ety , installation, and operating instructions for the CX-7 and CX-5 P ower Amplifiers. It is im por tant to read this user guide before attempting to use these products . Pa y par ticular attention to safety instructions. The follo wing symbols are used in this document: Appears on the[...]

  • Page 4

    ii Introduction Lexicon Introduction Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . .iii Auspackend und Inspektion . . . . . . . . . . . . . . . . . . . . .iii Desempaquetando e Inspección . . . . . . . . . . . . . . . . . .iii Déballer et Inspectión . . . . . . . . . . . . . . . . . . . . . . . . .iii Spacchettando ed Ispezi[...]

  • Page 5

    iii Introduction CX Power Amplifiers UNP ACKING AND INSPECTION After unpacking the unit, save all packing materials in case the unit ever needs to be shipped. Thoroughly inspect the modules and packing materials for signs of damage. Report any damage to the carrier at once; report equipment malfunction to the dealer . AUSP ACKEND UND INSPEKTION Üb[...]

  • Page 6

    1 Getting Started About the CX Power Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Highlights Product Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Installation Considerations . . . . . . . . . . . . . . . . . [...]

  • Page 7

    Getting Started Lexicon 1-2 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, curren[...]

  • Page 8

    PRODUCT REGISTRA TION Please register the CX Power Amplifier within 15 days of purchase. To do so, register online at www .harmanspecialtygroup.com or complete and return the product registration card attached to the back cover of this user guide. The product registration card serves no warranty purposes. Retain the sales receipt as proof of warran[...]

  • Page 9

    2 Basic Operation Front Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Rear Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Protection Modes . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 10

    Basic Operation Lexicon 2-2 FRONT P ANEL OVERVIEW 1 1. Standby Button Activates and deactivates standby mode when the CX amplifi- er is powered on with the rear panel power switch. The stand- by button performs no function when the CX amplifier is pow- ered off with the rear panel power switch, or when the trigger switch is set to ON or DELA Y (see[...]

  • Page 11

    Basic Operation CX Power Amplifiers 2-3 1 2 2. Channel Status LEDs Provide an at-a-glance view of the status of each channel as indicated in the table below: Note: When the main power transformer temperature exceeds 100˚C: • the transformer will deactivate •the channel status LEDs will no longer be lit •the red standby LED will flash rapidly[...]

  • Page 12

    Basic Operation Lexicon 2-4 REAR P ANEL OVERVIEW The CX-7 rear panel is shown above. The CX-5 r ear panel is shown on page 2-6. The rear panels ar e similar , except the CX-7 amplifier includes two additional channels. 1 8 7 3 5 4 2 6 External wir ing connected to connectors marked with the icon pictured at the left requires installation by a quali[...]

  • Page 13

    . . . continued on page 2-7 Basic Operation CX Power Amplifiers 2-5 1. Power Switch Disconnects power to the AC Input Connector . Set this switch to off when making or breaking connections to the amplifier . 2. AC Input Connector The AC input connector provides power to the unit with the supplied power cord (3 conductor , 14AWG). Do not use an exte[...]

  • Page 14

    Basic Operation Lexicon 2-6 REAR P ANEL OVERVIEW (continued) The CX-5 rear panel is shown above. The CX-7 r ear panel is shown on page 2-4. Both are similar , except the CX-7 features two additional channels. 1 7 8 3 5 4 2 6 External wir ing connected to connectors marked with the icon pictured at the left requires installation by a qualified perso[...]

  • Page 15

    Basic Operation CX Power Amplifiers 2-7 . . . continued from page 2-5 5. UNBAL/BAL Switch Selects between unbalanced (RCA) or balanced (XLR) audio input for each channel. Power the amplifier off or reduce sys- tem volume before changing the setting of the UNBAL/BAL switch. If the amplifier is connected to a digital controller such as the MC-12 or M[...]

  • Page 16

    Basic Operation Lexicon 2-8 PROTECTION MODES The CX amplifiers are equipped to protect against overheating and miswiring, as well as electrical failures such as short circuits, device failures, internal faults, and DC output to the speakers. THERMAL PROTECTION The amplifier includes thermal protection for each channel, the main power transformer , [...]

  • Page 17

    3 Tr oubleshooting & Maintenance T roubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3[...]

  • Page 18

    T roubleshooting & Maintenance Lexicon 3-2 TROUBLESHOOTING No front panel LEDs are lit. 1. Make sure the unit is plugged in and the rear panel power switch is set to on. The red Standby LED is flashing rapidly . 1. Power the amplifier off. Allow the amplifier to cool before powering it on again. 2. Check the incoming line voltage. It should not[...]

  • Page 19

    Tr oubleshooting & Maintenance CX Power Amplifiers 3-3 Note: V isit www .harmanspecialtygroup.com for answers to frequently asked questions and additional trou- bleshooting information. MAINTENANCE The following routine maintenance should be performed on a periodic basis: • Clean the exterior surfaces of the unit with a soft, dry , lint-free [...]

  • Page 20

    A Appendix Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3[...]

  • Page 21

    Audio Output Connectors Audio Input Connectors Other 140W at 8 Ω , all channels driven 20Hz to 20kHz Appendix Lexicon A-2 SPECIFICA TIONS 7 RCA, 7 XLR 5 RCA, 5 XLR CX-7 CX-7 CX-5 CX-5 7 pairs of gold-plated binding posts 5 pairs of gold-plated binding posts Performance Minimum 2 Ω Speaker Impedance Performance (Continued) Frequency • 20Hz to [...]

  • Page 22

    Appendix CX Power Amplifiers A-3 Application of Council Directive(s): 89/336/EEC and 93/68/EEC Standard(s) to which Conformity is Declared: EN 55103-1:1995, EN 61000-3-3:1995, EN 55022:1992 (Class B), EN 55103-2:1996, and EN 60065:1998 Manufacturer: Harman Specialty Group 3 Oak Park Bedford, MA 01730-1413 USA The equipment identified here conforms [...]

  • Page 23

    Index I AC Input Connector . . . . . . . . . . . . . . . . . . . . . . .2-5 AC Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7 BAL/UNBAL Switch . . . . . . . . . . . . . . . . .2-5, 2-7, 3-2 Channel Status LEDs . . . . . . . . .2-2, 2-3, 2-8, 2-9, 3-2 Connectors . . . . . . . . . . . . . . . . . . .2-4, 2-5, 2-6, 3-2 Cooling Sys[...]

  • Page 24

    Harman Specialty Group 3 Oak P ark Bedford, MA 01730-1413 USA Te l 781-280-0300 Fa x 781-280-0490 www .har manspecialty group.com Customer Support Te l 781-280-0300 Fa x 781-280-0495 (Sales) Fa x 781-280-0499 (Service) LIMITED W ARRANTY Harman Specialty Group offers the f ollowing warr anty on this product: What is the Duration of this Warranty? Th[...]

  • Page 25

    PRODUCT REGISTRA TION HARMAN SPECIAL TY GROUP 3 O AK P ARK BEDFORD MA 01730-9863 POST AGE WILL BE P AID BY ADDRESSEE FIRST -CLASS MAIL PERMIT NO . 67 BEDFORD MA NO POST AGE NECESSAR Y IF MAILED IN THE UNITED ST A TES BUSINESS REPL Y MAIL Harman Specialty Group 3 Oak Park Bedford, MA 01730-1413 USA Te l 781-280-0300 Fa x 781-280-0490 www .harmanspec[...]