QSC Audio Stereo Amplifier PL34 User Guide

PowerLight Series  
Professional Power Amplifiers  
PL3.4 | PL3.8x | PL4.0 | PL6.0II  
With an unequaled reputation for sound quality  
and reliability, the PowerLight® Series is a range  
of advanced-technology professional audio amplifiers  
designed for touring professionals. PowerLights  
feature QSC’s exclusive PowerLight technology  
for extraordinary audio performance, reliability  
and reduced weight. Four models offer a range of power  
from 725 to 3,500 watts per channel, allowing you to  
choose the right power for your special application.  
With PowerLight technology, PowerLight amplifiers take  
your sound to a whole new level. Not only does it  
give you tighter bass and clean transparent highs,  
PowerLight also cuts waste heat and boosts reliability.  
PowerLight is a revolutionary switching power supply  
technology that provides ample current to the audio  
power circuitry by charging the supply rails 230,000  
times a second though an ultra-low impedance circuit.  
So unlike amplifiers that use conventional supplies, the  
audio signal is never starved prematurely and remains  
crisp and clean.  
Features  
PowerLight Series amplifiers also boast a set of useful  
features. Individually selectable clip limiters lower  
distortion and protect speakers, and a standby mode  
allows remote AC control.  
• PowerLight switching technology—for improved audio performance  
• High efficiency, Class H linear output circuit lowers AC current consumption  
and cooling requirements by 40% or more (on selected models)  
• DataPort for remote computer control  
• User defeatable clip limiter reduces distortion, protects speakers  
• Advanced thermal management system for superior cooling  
• Detented gain controls with 2 dB steps for easy resetting  
• Comprehensive LED status arrays  
PowerLight Power Amplifiers  
Watts per channel  
Model  
8  
725  
900  
450  
900  
1150  
4Ω  
1150  
1400  
800  
2*  
1700  
2400  
1400  
2000  
3500  
PL3.4  
PL3.8x Ch 1  
PL3.8x Ch 2  
PL4.0  
• Variable speed fan for quiet operation  
1400  
2050  
• Remote AC power control  
PL6.0II  
• DC, subsonic audio, and thermal overload protection  
• Neutrik “Combo” (XLR & 1/4") and barrier balanced input connectors  
• 3 year warranty plus optional 3 year extended service contract  
20 Hz – 20 kHz, 0.1% THD *1 kHz, 1% THD  
PowerLight is a registered trademark of QSC Audio Products, Inc.  
 

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