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Table of Contents
Troubleshooting
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Summary of Contents for Lexicon CX
- Page 1 Power Amplifier Power Amplifier User Guide User Guide...
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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 Manufactured under license from THX, Ltd. “THX” and “Ultra2” are trademarks or registered trademarks of THX, Ltd. Customer Support 781-280-0300 “Lexicon” and the Lexicon logo are registered trademarks of Harman International Industries. U.S. patent numbers and other worldwide patents issued and pending. 781-280-0495 (Sales) 781-280-0499 (Service) ©...
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Page 4: Table Of Contents
Desempacotando e Inspeção ....iii Section 1: Getting Started About the CX Power Amplifiers ..... . . 1-2 Highlights Product Registration . -
Page 5: Introduction
CX Power Amplifiers UNPACKING 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. -
Page 6: Section 1: Getting Started
About the CX Power Amplifiers ........ -
Page 7: About The Cx Power Amplifiers
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. -
Page 8: Product Registration
• Rack-mount option available PRODUCT REGISTRATION 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. -
Page 9: Section 2: Basic Operation
Basic Operation Front Panel Overview............2-2 Rear Panel Overview . -
Page 10: Basic Operation
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 DELAY (see page 2-7 for more detail). - Page 11 CX Power Amplifiers 2. Channel Status LEDs Provide an at-a-glance view of the status of each channel as indicated in the table below: Color Status Constant Blue Normal Operation Constant Bright Blue Indicates the audio signal is clipping. Reduce volume level to help eliminate potentially damaging audio signals from reaching the speakers.
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Page 12: Rear Panel Overview
The CX-7 rear panel is shown above. The CX-5 rear panel is shown on page 2-6. The rear panels are similar, except the CX-7 amplifier includes two additional channels. -
Page 13: Power Switch
LED flashing. 3. INPUT 1 to 7 (CX-7) or 1 to 5 (CX-5) Provide audio input for the speakers connected to the corresponding audio outputs. When using the unbalanced (RCA) audio inputs, make sure the UNBAL/BAL switch located below each XLR connector is set to UNBAL. - Page 14 External wiring connected to connectors marked with the WARNING icon pictured at the left requires installation by a qualified person or the use of ready-made leads or cords. The CX-5 rear panel is shown above. The CX-7 rear panel shown page 2-4.
- Page 15 CX Power Amplifiers . . . 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.
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Page 16: Protection Modes
LED will no longer be lit. CURRENT PROTECTION The CX amplifiers use a combination of voltage and current infor- mation to protect the output transistors. The amount of current capable of being delivered to the load is dependent on how much voltage appears across the output transistors. -
Page 17: Troubleshooting And Maintenance
Troubleshooting & Maintenance Troubleshooting ............3-2 Maintenance . -
Page 18: Troubleshooting
2. Power the amplifier off. Allow the amplifier to cool before powering it on again. 3. If the problem persists after the amplifier has cooled, contact an authorized Lexicon dealer or Harman Specialty Group Customer Service @ www.harmanspecialtygroup.com or 781-280-0300. -
Page 19: Maintenance
CX Power Amplifiers Note: Visit 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 cloth. -
Page 20: Appendix
Appendix Specifications ................A-2 Declaration of Conformity. -
Page 21: Specifications
12V DC +/- 10% Trigger Input Power Requirements • 120V 60Hz 15 Amp (domestic) • 230V 50Hz 10 Amp (export) • CX-7: 52.8 lbs (24 kg) Weight • CX-5: 47.1 lbs (21.4 kg) Optional brackets are available for mounting either Rack Mounting... -
Page 22: Declaration Of Conformity
Harman Specialty Group 3 Oak Park Bedford, MA 01730-1413 USA The equipment identified here conforms to the Directive(s) and Standard(s) specified above. CX-7 and CX-5 Power Amplifiers Lexicon CX-7 and CX-5 July 2003 Harman Specialty Group Vice President of Engineering... -
Page 23: Index
Front Panel ......2-2 to 2-3 CX-7 ..... . .2-2 (Illustration) CX-5 . -
Page 24: Limited Warranty
Harman Specialty Group offers the following warranty on this product: What is the Duration of this Warranty? This warranty will remain in effect for five (5) years from the original date of purchase. Who is Covered? This warranty may be enforced by the original purchaser and subsequent owners during the warranty period, provided the original dated sales receipt or other proof of warranty coverage is presented at time of service. - Page 25 Harman Specialty Group 3 Oak Park Bedford, MA 01730-1413 USA 781-280-0300 781-280-0490 www.harmanspecialtygroup.com Customer Support 781-280-0300 781-280-0495 (Sales) 781-280-0499 (Service) Part No. 070-15879 | Rev 0 | 07/03...
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