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PRODUCT REGISTRATION

Please register the  LX Power Amplifier within 15 days of purchase.
To  do so, register online at www.lexicon.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 warranty coverage.

INSTALLATION CONSIDERATIONS

The LX Power Amplifiers require special care during installation to
ensure optimal performance. The amplifiers should be installed in
an equipment rack using an optional rack-mount kit available from
Lexicon dealers or www.lexicon.com. Leave at least 2 inches of
open space around the top, sides, and rear of the amplifier for
proper ventilation.

Getting Started

LX Power Amplifiers

1-3

HIGHLIGHTS

200W per channel

Four custom designed, hand-graded output transistors per
channel

Bridgeable architecture for higher-power output (400W at 8

)

Oversized toroidal power transformer with extraordinarily low
DC resistance and thermal protection

High-power supply voltage (160V) for extra headroom at the
outputs

THX Ultra Certification

Junction Temperature Simulation (JTS) to provide maximum
performance from output transistors

Thermal protection against overheating

Speaker protection against DC and frequencies below 10Hz

Protection against short circuits, device failures, miswiring, and
internal faults

Stable with mismatched, reactive, or unusual loads

Quiet, microprocessor-controlled, forced-air cooling to
minimize chassis size

Compatible with 2

speaker impedances (Individual Mode)

Trigger input for power control from an external device

RCA, XLR, and 1/4-inch tip/ring/sleeve inputs

GROUND LIFT switch

Heavy-duty gold plated outputs

Multi-color channel status LEDs

Rack-mount option available

Be careful when moving the LX Power Amplifiers,
which are quite heavy.

Do not obstruct the ventilation holes in the chassis.

CAUTION

Summary of Contents for LX - REV 3

Page 1: ...LX Power Amplifier User Guide...

Page 2: ...nched particularly at plugs convenience receptacles and the point where they exit from the apparatus 12 Only use attachments accessories specified by the manufacturer 13 Use only with a cart stand bra...

Page 3: ...ocedure practice condition or the like that if not correctly performed or adhered to could result in damage to or destruction of part or all of the product Note Calls attention to information that is...

Page 4: ...ection 1 Getting Started About the LX Power Amplifiers 1 2 Highlights Product Registration 1 3 Installation Considerations 1 3 Section 2 Basic Operation Front Panel Overview 2 2 Rear Panel Overview 2...

Page 5: ...condensando los materiales para las se ales de da o Informe cualquier da o en seguida al portador el funcionamiento defectuoso de equipo de informe a su distribuidor D BALLER ET INSPECTI N Apr s avoi...

Page 6: ...1 Getting Started About the LX Power Amplifiers 1 2 Highlights Product Registration 1 3 Installation Considerations 1 3...

Page 7: ...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 groun...

Page 8: ...hannel Bridgeable architecture for higher power output 400W at 8 Oversized toroidal power transformer with extraordinarily low DC resistance and thermal protection High power supply voltage 160V for e...

Page 9: ...2 Basic Operation Front Panel Overview 2 2 Rear Panel Overview 2 4 Cooling System 2 8 Protection Modes 2 8 Thermal Protection DC Protection...

Page 10: ...deactivates the LX amplifier When the unit is in standby pressing the standby button deactivates standby mode and activates the LX amplifier The red standby button LED will flash for approximately fiv...

Page 11: ...rmal Operation Constant Bright Blue 1 distortion in the audio signal Reduce vol ume level to help eliminate potentially damaging audio signals from reaching the speakers Flashing Red The temperature o...

Page 12: ...s shown on page 2 6 The rear panels are similar except the LX 7 amplifier includes two additional channels 1 8 9 3 6 4 5 2 7 External wiring connected to connectors marked with the triangle pictured a...

Page 13: ...ed voltage may cause the amplifier to enter a protection mode indicated by the red standby LED flashing 3 INPUT 1 to 7 LX 7 or 1 to 5 LX 5 Provide audio input for the speakers connected to the corresp...

Page 14: ...7 rear panel is shown on page 2 4 Both are similar except the LX 7 features two additional channels 1 8 9 3 6 4 5 2 7 External wiring connected to connectors marked with the triangle pictured at the...

Page 15: ...the audio inputs are grounded to the chassis This switch should be set to ON whenever there is ground noise present in the system 8 TRIGGER INPUT Enables the amplifier to be controlled by the MC 12 M...

Page 16: ...ansistor reaches its maximum allowable temperature it is instantly restrict ed until the temperature decreases JTS s dynamic nature enables it to avoid the problems inherent in competing products that...

Page 17: ...the corresponding front panel channel status LED will no longer be lit After approximately 4 seconds DC protection will be automatically deactivated The relay will close and the corresponding channel...

Page 18: ...3 Troubleshooting Maintenance Troubleshooting 3 2 Maintenance 3 3...

Page 19: ...wer switch is set to on 2 Make certain the rear panel TRIGGER INPUT switch is set to OFF One or more channels is not passing audio but the corresponding channel status LED is lit blue 1 Make sure the...

Page 20: ...xicon com for answers to frequently asked questions and additional troubleshooting information MAINTENANCE The following routine maintenance should be performed on a periodic basis Clean the exterior...

Page 21: ...A Appendix Specifications A 2 Declaration of Conformity A 4...

Page 22: ...ormance Minimum 2 INDIVIDUAL Mode Speaker 4 BRIDGED Mode Impedance Performance Continued Frequency 20Hz to 20kHz 0 1dB Response 10Hz to 100kHz 0 5 3dB THD Below 0 02 at 200W 8 all channels driven 20Hz...

Page 23: ...s A 3 Other Continued Weight LX 7 LX 5 56lbs 25 4kg 52lbs 23 6kg Rack Mounting Optional brackets are available for mounting either amplifier in stan dard 9 inch equipment rack Specifications are subje...

Page 24: ...d EN 60065 1998 Manufacturer Lexicon Inc 3 Oak Park 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 P...

Page 25: ...to 1 3 Maintenance 3 3 Male Cable End XLR 2 5 Illustration MODE Switch 2 5 2 7 3 2 OUTPUTs 2 4 2 5 2 6 2 7 2 8 2 9 Power Outage 3 3 Power Switch 2 5 3 2 Product Registration 1 3 Protection Modes 2 8...

Page 26: ...on about where the unit should be taken or sent When making a written request please include your name complete address and daytime telephone number the product model and serial numbers and a descript...

Page 27: ...nc 3 Oak Park Bedford MA 01730 1413 USA Tel 781 280 0300 Fax 781 280 0490 www lexicon com Customer Support Tel 781 280 0300 Fax 781 280 0495 Sales Fax 781 280 0499 Service Lexicon Part No 070 14876 Re...

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