PowerLight™ 3 Series

Professional Power Amplifiers

The PowerLight™ 3 Series is designed for the most demanding live audio users, whether in touring rigs or fixed installations. The most requested features of the PowerLight 2 series have been upgraded to deliver “the ultimate analog amplifier”, while the QSC DataPort ensures full compatibility with advanced digital processing and QSControl. Three models range in power from 1250 watts to 4000 watts per channel at two ohms, all in two-rack space chassis that are only 15.6" (40 cm) deep and 22 lb (10 kg).

In addition to higher power, the PowerLight 3 Series offers higher input voltage, selectable sensitivity, and easily adjusted rear panel switches with color coded LED indicators. For those users who simply want a high performance amplifier to go with their existing processor or console, the PowerLight 3 Series is an ideal choice, offering high power, excellent value, and zero signal latency. When complete integration of amplifier control, monitoring and DSP is desired, the PowerLight 3 Series is fully compatible with the QSControl BASIS networked audio platform, with its comprehensive drag and drop DSP functionality. Simpler DSP requirements can be met with the DSP-4 processing module.

The flagship of the PowerLight 3 Series is the new 8000 watt PL380. This highly refined, all-switchmode amplifier incorporates nearly 40 years of QSC engineering experience, resetting expectations for Class D audio quality. The PL380 combines a pair of 4000 watt Class D amplifier channels with the well proven PowerLight supply, to deliver more than twice as much audio power as previous 2 rack unit PowerLight amplifiers. Reactive “back EMF” from the speaker is recycled to the power supply, and unmatched “plug-to-plug” efficiency of 85% keeps AC power needs to a minimum, while delivering more energy to the speaker.

Years of patient development have resulted in outstanding 20 - 20 kHz audio performance, plus complete protection from normal hazards of the trade. Even simple features such as dependably silent, surge-free on-off switching indicate the special care taken to keep things safely under control. The most pronounced “sonic signature” of the PL380 is one of immense headroom, sailing through even the most difficult loads with no signs of stress or change of tonality.

For lower power applications, the PL325 and PL340 offer the same feature set, matched to upgraded versions of QSC’s most advanced linear amplifier platform. Recent advances in power supply capacitors further improve power and low impedance performance, while continuing to offer the best available audio performance. As a result, designers have the choice of running a single type of amplifier throughout their rig, or matching amplifier performance to specific transducer types.

In keeping with normal QSC design standards, back-to-front airflow provides up to twice as much long-term average power as most competitors, without dumping hot air into the rack. All PowerLight 3 models are built in the same chassis size, with common back panel layouts to facilitate easy racking and hookup.

PowerLight™ 3 Power Amplifiers - Watts at Clipping

 

 

Watts per channel

 

Model

8Ω

4Ω

2Ω

 

 

 

 

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

PL325 PL340 PL380

Features

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

•Flow-thru 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

•User defeatable clip limiters and selectable low-frequency filter per channel (3 Hz, 30 Hz, or 50 Hz)

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

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

•Parallel Dataport, XLR/M and XLR/F connectors for simple loop-through connectivity

•Neutrik Speakon® and “Touch Proof” binding post outputs

•Neutrik Powercon® power cable remains secure on the road

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

PL340 and PL325

•Linear Class H output circuit doubles standard Class B efficiency to reduce AC current consumption and cooling requirements

PL380

•Class D output circuit re-doubles the output power with even lower losses and minimal increase in average AC power, dramatically reducing power distribution demands compared to older high power amplifiers

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QSC Audio warranty PL325 PL340 PL380 Features, PL340 and PL325
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PL380, PL340 specifications

QSC Audio has long been a leader in professional audio equipment, known for its reliable and high-performance products. Among its impressive lineup, the PL340 and PL380 power amplifiers stand out as vital components for systems requiring exceptional sound quality and robust output capabilities.

The QSC PL340 is a versatile, lightweight amplifier that can deliver up to 750 watts per channel at 4 ohms. It is meticulously designed for various applications, ranging from live sound reinforcement to fixed installations. One of its standout features is the PowerLight 3™ technology, which combines high efficiency with a compact form factor, allowing for reduced weight without compromising audio performance. The PL340 also includes a built-in DSP (Digital Signal Processing) that provides various user-friendly features, including crossover, EQ, and delay settings, ensuring optimal sound quality tailored for different environments.

On the other hand, the PL380 is an even more powerful amplifier, providing an impressive 1,000 watts per channel at 4 ohms. This model is engineered with QSC's innovative Intelligent Thermal Management System, which intelligently adjusts cooling based on the operational conditions, maintaining performance while preventing overheating. Like the PL340, the PL380 also incorporates PowerLight 3™ technology, enhancing energy efficiency and minimizing rack space requirements.

Both amplifiers are equipped with comprehensive rear-panel connectivity options, including XLR inputs and speakON outputs, facilitating seamless integration into various audio setups. The user-friendly interface includes intuitive LED indicators that provide immediate status feedback on power, signal, and fault monitoring, simplifying setup and operation.

Additionally, the PL340 and PL380 are designed with durability in mind, featuring rugged steel chassis construction that withstands the rigors of touring and demanding installations. Their performance and reliability make them an ideal choice for sound engineers and venue operators looking for high-quality amplification solutions.

In summary, QSC Audio's PL340 and PL380 amplifiers embody a blend of advanced technology, robust power, and thoughtful design, making them essential tools for achieving superior audio fidelity in professional sound applications. Whether for a live concert, corporate event, or permanent installation, these amplifiers ensure that every performance is delivered with unparalleled clarity and power.
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