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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 main-
tenance (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 uninsu-
lated "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.

© Copyright 2007, QSC Audio Products, Inc.

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.

Summary of Contents for PowerLight PL325

Page 1: ...TD 000235 01 rev B TD 000235 00 POWERLIGHT 3 SERIES User Manual PL325 1250 watts per channel at 2 ohms PL340 2000 watts per channel at 2 ohms PL380 4000 watts per channel at 2 ohms...

Page 2: ...nsu lated 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 REMO...

Page 3: ...usands 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...

Page 4: ...NUMBER PL325 PL340 PL380 RACK MOUNTING EAR 2RU fits 10 32 or M6 AC POWER SWITCH Relay Controlled Inrush Limiting COOLING VENTS Rear to Front Air Flow Keep Clear OPTIONAL HANDLES See page 8 for Instal...

Page 5: ...is approaching Full Power 20dB Green Middle of Normal Range SIGNAL Green Low End of Normal Range POWER Blue Run or Standby BRIDGE PARALLEL Status of Input Mode Switch Yellow Orange on rear panel LOCKO...

Page 6: ...uts Impedance 10K Balanced Unbalanced PLUGGABLE TERMINAL BLOCKS 5 0mm 3 pin Paralleled with XLRs Balanced Pinout Unbalanced Pinout INPUT MODE SWITCH Bridge Yellow See page 9 Stereo Green Normal Mode P...

Page 7: ...OOLING VENTS Rear Intake Keep Clear SAFETY AGENCY AND RECYCLING MARKS REAR SUPPORT EARS See page 10 AC POWER CABLE Location and Type Vary By Model and AC Voltage SERIAL NUMBER LABEL AC BREAKER PL380 O...

Page 8: ...een set The LED color matches the rear panel readout See PARALLEL INPUT MODE on next page GAIN CONTROLS Each channel has a 21 step Gain control with approximately 20dB of input headroom 1dB steps are...

Page 9: ...ct should be auditioned carefully When bypassed no LED the low frequency response extends to about 3Hz In this wide band mode very large sub audio transients may trigger brief protective muting INPUT...

Page 10: ...92 1387 2178 8 6 A 14 3 A 22 0 A 893 1981 3339 17 0 A 28 3 A 45 3 A 1204 2481 4942 PL340 8 ohms x 2 4 ohms x 2 2 ohms x 2 1 0 7 5 A 11 8 A 19 1 A 1150 2114 3495 13 3 A 21 1 A 31 6 A 1682 2864 5306 25...

Page 11: ...22dB 32dB Setting 14 6V 25 5dB 18V 27 4dB 22V 29dB 26dB Setting 25V 30dB 25V 30dB 25V 30dB CONTROLS and LEDs AC Power Switch Power Blue Br Mono Yellow Par Orange FRONT PANEL Each channel Gain Control...

Page 12: ...to misuse neglect acci dent improper installation or where the date code has been removed or defaced QSC shall not be liable for incidental and or consequential damages This warranty gives you specifi...

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