QSC 3 Series Brochure & Specs Download Page 5

PL340 & PL325: World-Proven 
PowerLight Technology and 
Ultimate Class H Performance

Choose Your Technology

Maybe you don’t need the PL380 amplifier’s 
8 kW output. Perhaps you prefer the sound 
of linear output amplifiers for your high-
frequency drivers. The PowerLight 3 Power 
Amplification System offers you two excep-
tional choices — the PL325 and PL340. 
Both amplifiers update QSC’s well-tested 
Powerlight 2 platform, a unique Class H 
technology that eliminates audible artifacts 
caused by switching between tiers. Their 
highly refined linear circuitry delivers the 
cleanest output signal available in a profes-
sional power amplifier.

Our latest PowerLight supply has larger 
capacitors and more robust semiconduc-
tors for even higher peak power and energy 
storage. As always, PowerLight is designed 
for the places you work, tolerating surges 
and dips gracefully.

Smooth System Integration

The PowerLight 3 Series is designed as a 
complete system for high-power concert 
amplification, not just a group of products. 
That’s why all PowerLight 3 amplifiers share 
a common control, connector and indicator 
layout: it simplifies building and/or reconfig-
uring your racks, and keeps your wiring neat 
and clean.

You may want to use other amplifiers 
alongside the PowerLight 3 Series. That’s 
why all three of these amplifiers have both 
switchable input sensitivity and zero latency.

Reliable Protection

We take thermal overload as seriously as 
you do. PowerLight 3 Series fans speed up 
if heat sinks rise above 55° C. Increased 
air flow is usually enough even during high 
level operation. Limiting begins above 80° C. 
Temperatures above 85° C only occur with 
fan or vent blockage: the amplifier will mute 
to prevent significant internal damage.

Global Regulatory Compliance 

If your business is concert sound, you 
never know how far the next gig will take 
you — or what kind of regulations you’ll find 
when you get there. PowerLight 3 Series 
amplifiers carry both UL and CE approvals, 
and meet world recognized FCC Class A 
EMI limits for the PL380 and Class B for the 
PL325 and PL340. 

To prevent unauthorized adjustment 
of input attenuation settings, a 
security lockout plate is included 
with every PowerLight 3 amplifier.

PL3 Series

 

 

Watts per channel

Model 

8

 

4

 

2

PL325 

500 

850 

1250

PL340 

800 

1250 

2000

PL380 

1500 

2500 

4000*

EIA 1 kHz 1% THD.    *Burst mode testing required due to AC 
service current limitations

Summary of Contents for 3 Series

Page 1: ...PowerLight 3 Series 2500 to 8000 watt lightweight 2RU amplifiers for use in the most demanding concert and live sound reinforcement applications WideLine 8 shown ...

Page 2: ... or retakes Night after night venue upon venue across the globe QSC professional audio systems do exactly what Pat Quilter and his team of engineers designed them to do deliver Ultimate Audio Performance One world class power supply two output technologies Over four decades of R D we ve learned to take innovative leaps one at a time Since PowerLight remains the world s most efficient supply we dev...

Page 3: ...t drum monitors or out at FOH aligning the subs with the mains you know that head room is not measured by instantaneous peak power ratings It s the ability of the entire amplifier from power supply to output devices to produce high voltages and cur rents for extended periods of time Power Light 3 Series amplifiers go head to head with products claiming much higher output Ultimate System Compatibil...

Page 4: ...igh power Class D designs The PL380 won t lose efficiency when driving reactive loads That s important in the real world of concert sound Unrivalled Audio Performance From the ultra fast modulator its response time is measured in nanoseconds to the high performance output filters the PL380 has been designed to sound neutral accurate and linear Full range distortion is exceptionally low and free fr...

Page 5: ...ator layout it simplifies building and or reconfig uring your racks and keeps your wiring neat and clean You may want to use other amplifiers alongside the PowerLight 3 Series That s why all three of these amplifiers have both switchable input sensitivity and zero latency Reliable Protection We take thermal overload as seriously as you do PowerLight 3 Series fans speed up if heat sinks rise above ...

Page 6: ... well both Neutrik Speakon and Touch Proof binding posts are included on all three amplifiers The channel 1 Speakon carries both output channels for direct connection to bi ampli fied loudspeakers Choose Your Operating Voltage PowerLight supplies are factory optimized for 120 VAC or 240 VAC operation The PL380 amplifier s 120 VAC cord is designed for continuous full power operation with 12 3 wirin...

Page 7: ...ges from exceeding normal operating current loads High Frequency Protection Most switchmode amplifiers mute when attempting to reach full power at 20 kHz especially into low impedance loads The PL380 amplifier s internal limiting will bring power down to a mere 1000 watts in this instance This limiter can be observed on the bench but real world compression drivers are unlikely to require these pow...

Page 8: ...ed or unbalanced 10k balanced or unbalanced 10k balanced or unbalanced Maximum Input Level 1 2 V Setting 32 dB Setting 26 dB Setting 11 V 23 dB 14 6 V 25 5 dB 25 V 30 dB 11 V 23 dB 18 V 27 4 dB 25 V 30 dB 10 V 22 dB 22 V 29 dB 25 V 30 dB Controls and LEDs Front Panel Common AC Power Switch Power Blue Br Mono Yellow Par Orange Each Channel Signal 35 dB 20 dB Green 10 dB Orange Clip Prot Red Gain Co...

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