Table of Contents
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Table of Contents
Related Manuals for LEM POWERFACTOR 3
Summary of Contents for LEM POWERFACTOR 3
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Page 2: Important Safety Instructions
The lightning flash with arrowhead symbol within an equilateral CAUTION triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's RISK OF ELETRIC SHOCK enclosure, that may be of sufficient magnitude to constitute a DO NOT OPEN risk of electric shock to persons. -
Page 3: Table Of Contents
Diagrams ........... 16 POWERFACTOR 3 response curves ......16 POWERFACTOR 5 response curves . -
Page 4: Introduction
Introduction Introduction Congratulations for having chosen POWERFACTOR! The POWERFACTOR Series is a new line of high-power amplifiers, designed and manufactured for the most demanding professional uses: large concerts and tours; powerful sound systems in clubs, theme parks and public events; quality sound reinforcement for theatres, cinemas and conference halls;... -
Page 5: Extremely High Constant Efficiency
95%! In practical terms, this results in invariable performance and a remarkable reduction of dimensions, weight and consumption. Higher power, lower weight, smaller dimensions All the models in the POWERFACTOR Series can supply very high power. POWERFACTOR 3 POWERFACTOR 5 IMPEDANCE POWER RMS 8 Ω... - Page 6 Introduction A special thermal control device constantly varies fan speed according to the temperature picked up by the sensors located on the heat sink. This type of control ensures that airflow always matches temperature conditions, ensuring the fan is even quieter when the amplifier is running with low signals and reducing dust build-up inside the unit.
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Page 7: Rules For Installation And Use
Rules for installation and use Rules for installation and use ATTENTION !!! The POWERFACTOR series amplifiers generate high voltage on output. To avoid the risk of electric shocks, DO NOT TOUCH any bare wires when the unit is switched on. This manual contains important information for correct safe use: read it carefully before using your amplifier. - Page 8 Rules for installation and use Preventing or identifying interference First of all, check that the amplifier is installed in a place free from industrial or RF (radio frequency) interfer- ence. Avoid installing your equipment very near radio or TV sets, mobile phones, etc., as these can cause noisy interference.
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Page 9: Functions & Controls
Functions & Controls Functions & Controls POWER ON/OFF ON - OFF switch. The amplifier has “SOFT-START”, i.e. a device that allows to avoid high energy consumption when the unit is switched on. This device also delays the power feed to the load for 4 seconds, thus avoiding dangerous signal peaks and possible damage to the speakers. -
Page 10: Protect Leds
Functions & Controls LEDs The front panel is fitted with a series of LED indicators. “PROTECT”, “HI-FREQ” and “SIGNAL” are specific for each channel. “READY” and “TEMP” are common to both channels. PROTECT LEDs Protection indicators. Indicate the intervention of any protections on the respective channels of the amplifier. NB: for a detailed description, see the PROTECTIONS section in the Introduction chapter. -
Page 11: Connection Panel
Connection panel Connection panel INPUTS Balanced XLR-F connectors (0 dB / 30 kΩ Ω Ω Ω Ω ). The inputs of the amplifier’s two channels. Can receive balanced or unbalanced high impedance line signals from equipment with high level outputs. NB: Whenever possible, use balanced cables. -
Page 12: Connection Examples
Connection examples Connection examples... -
Page 13: Stereo + Link
Connection examples... -
Page 14: Parallel
Connection examples... -
Page 15: Connection Cables
Connection cables Connection cables The following diagrams show the wiring of the connectors that can be used with the POWERFACTOR series amplifiers. To connect the mixer outputs to the amplifiers inputs, make certain to always use balanced signal cables: the use of unbalanced cables could in fact probably cause annoying hum and noise. -
Page 16: Signal Cables
Connection cables Signal cables Balanced XLR-M connector Unbalanced XLR-M connector Balanced XLR-F connector Unbalanced XLR-F connector... -
Page 17: Technical Specifications
Technical specifications Technical specifications POWER SPECIFICATIONS POWERFACTOR 3 POWERFACTOR 5 2 Ohms 1500+1500 2500+2500 EIAJ impulse output power 820+820 1360+1360 4 Ohms 1kHz, THD maximum 1% Both channels 450+450 750+750 8 Ohms ELECTRICAL SPECIFICATIONS POWERFACTOR 3 POWERFACTOR 5 0dB (0.775V) 0dB (0.775V) -
Page 18: Diagrams
Diagrams POWERFACTOR 3 response curves POW ER FA CTO R 3 Interm odulation D IM 100 Vs. Power 0.05 0.02 0.01 POW ER FA CTO R 3 Interm odulation SM PTE Vs. Power 0.05 0.02 0.01... - Page 19 Diagrams POWERFACTOR 3 response curves POW ER FA CTO R 3 TH D: Vs. Power 4 Ohm 0.05 0.02 0.01 POW ER FA CTO R 3 THD Vs. Freq. 8 Ohm (1/3 rated output pow er) 0.05 0.02 0.01...
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Page 20: Powerfactor 5 Response Curves
Diagrams POWERFACTOR 5 response curves POW ER FA CTO R 5 Interm odulation D IM 100 Vs. Power 0.05 0.02 0.01 POW ER FA CTO R 5 Interm odulation SM PTE Vs. Power 0.05 0.02 0.01... - Page 21 Diagrams POWERFACTOR 5 response curves POW ER FA CTO R 5 THD : Vs. Pow er 4 O hm 0.05 0.02 0.01 POW ER FA CTO R 5 TH D Vs. Freq. 8 O hm (1/3 rated output power) 0.05 0.02 0.01...
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Page 22: Block Diagram
Diagrams Block diagram... - Page 23 FEDERAL COMMUNICATIONS COMMISSION NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
- Page 24 Sales Division: 47842 S.Giovanni in Marignano (RN) – Via delle Rose, 12 – tel. +39-0541-959511 – fax +39-0541-957404 Internet: http://www.lemaudio.com...
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