QSC Audio PL325 User Manual 2

Important Safety Precautions & Explanation of Symbols

1- Read these instructions. 2- Keep these instructions. 3- Heed all warnings. 4- Follow all instructions. 5- WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture. Do not use this apparatus near water. 6- Clean only with a dry cloth. 7- Do not block any ventilation openings. 8- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9- Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding plug has two blades and a grounding prong. The wide blade or third prong are provided for your safety. If the provided plug does not fit your outlet, consult an electrician for the replacement of the obsolete outlet. 10- Protect the power cord from being walked on or pinched, particularly plugs, convenience receptacles, and the point where they exit from the apparatus. 11- Use only attachments/accessories specified by QSC Audio Products, Inc. 12- Use only with hardware, brackets, stands, and components sold with the apparatus or by QSC Audio Products, Inc. 13- Unplug the apparatus during lightning storms or when unused for long periods of time. 14- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in this manual.

The lightning flashes printed next to the OUTPUT terminals of the amplifier are intended to alert the user to the risk of hazardous energy. Output connectors that could pose a risk are marked with the lightning flash. Do not touch output terminals while amplifier power is on. Make all connections with amplifier turned off.

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous" voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.

FCC INTERFERENCE STATEMENT FOR PL325 & PL340 MODELS NOTE: This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC rules. These limits are

designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by switching the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and the receiver.

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio or TV technician for help.

FCC INTERFERENCE STATEMENT FOR PL380 MODEL NOTE: This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of the FCC rules. These limits are

designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance to the instructions, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct at his own expense.

QSC® is a registered trademark of QSC Audio Products, Inc.

"QSC" and the QSC logo are registered with the U.S. Patent and Trademark Office

Speakon® and PowerCon® are registered trademarks of Neutrik Inc. All trademarks are the property of their respective owners.

INTRODUCTION

Thank you for choosing PowerLight 3 for your amplification needs. You have joined a worldwide community of professionals who rely on QSC products to perform under all conditions. QSC's vision is to be the most trusted provider of high quality audio products and services to artists and professionals worldwide. We earn that trust through careful design, thorough testing, and obsessive attention to quality and detail, in all phases of manufacturing and service.

The PowerLight 3 Series is based on decades of research and experience in audio power amplification. This series combines the most requested analog input adjustments with easy-to-read LED indicators, making it easy to inspect settings at a glance and match to any system. Because there is no internal digital processing or signal delay, these amplifiers can be freely combined with all types of traditional amplifiers. The QSC DataPort provides access to QSC's full range of digital processors and remote control monitor systems.

FEATURES

•PowerLight switchmode power supply for highest efficiency and improved audio performance

The PL325 and PL340 continue the PowerLight legacy started in 1994, combining a powerful, lightweight and efficient switchmode supply with our most advanced Class-H linear output section. Their reference-quality audio performance, high thermal capacity, and touring-grade ruggedness continue to lead the industry.

The PL380 combines the PowerLight supply with a Class-D audio output section, doubling the output power while further reducing losses. The Class-D output section outperforms most competitive linear amplifiers, offering the best full-range audio performance available in this power range. All models have a neutral sonic signature, driving even difficult loads without any distracting behavior or change in tone quality.

In order to control thousands of watts of power smoothly and safely, QSC amplifiers employ many sophisticated protection circuits. These systems provide the highest possible dynamic range without letting the amplifier exceed its safe operating limits. To avoid unwanted triggering of these protection systems, and to protect your valuable speakers, please review these instructions to ensure that you get the full benefit of your amplifier's performance.

•Flow-through air path and solid aluminum heat sinks for maximum cooling

•DataPort supports remote computer control and/or external DSP-4 modules

•Detented gain controls with 1 dB steps for precise calibration

•Removable knobs with lock-out security plate to prevent unauthorized tampering

•Independant user-defeatable clip limiter and selectable lowfrequency filter for each channel

•Three selectable input gains (26 dB, 32 dB, or 1.2V)

•Front and rear panel LEDs indicate status of switch settings at a glance

•Parallel XLR male, XLR female, 3-pin header, and DataPort connectors for simple loop-through connectivity

•Neutrik Speakon

•Neutrik PowerCon (early PL380 units may have hard-wired power cables pending UL approval of 30 ampere PowerCon)

•3 year warranty, plus optional 3 year extended service contract

and “touch proof” binding post outputs

power cable remains secure on the road

PL325 and PL340

•Linear class-H output crcuit doubles the standard class-B efficiency, reducing cooling and AC current requie

PL0 9(8ff)-9.340

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