QSC Audio PL218A, PL230A, PL236A, PL224A user manual Operation, Gain Controls

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OPERATION

GAIN CONTROLS

Turn down the gain controls before applying power. The gain controls are detented 21 steps for repeatable adjustment. Surrounding the gain control knob, the attenuation level is shown in dB. The gain structure may be selected on the PL2A. On the rear panel you will find a switch labeled GAIN-SENSITIVITY SELECT; you may select from +4 dB input sensitivity, 32 dB or 26 dB of voltage gain.

AC POWER SWITCH

Before applying power, check all connections and turn down the gain controls. The "soft start" sequence starts with the POWER indicator

LED at half brightness. A few seconds later the fan starts, the POWER indicator fully illuminates and the amplifier mutes for two seconds.

The CLIP LEDs will glow bright red. When the CLIP LEDs go out, the amplifier is ready.

FRONT PANEL LED INDICATORS

At full brightness, the green POWER LED indicates that the amplifier is operating. Half brightness indicates the amp is in its start-up sequence or STANDBY mode.

As the input signal strength increases, the green SIGNAL, -20dB,and amber -10dBLED indicators light respectively at 0.1%, 1% and 10% of full power.

The red CLIP LED indicator flashes during overload (clipping). A bright, steady glow indicates protective muting; if this occurs during use, see Troubleshooting.

The yellow BRIDGE LED illuminates when the MODE switch is set to BRIDGE.

The blue BI-AMPLED illuminates when the MODE switch is set to BI-AMP.

The orange PARALLEL LED illuminates when the INPUT CONFIGURATION switch is set to PARALLEL.

Front panel: gain controls and indicator LED’s for signal level, clip indication, power status indication, and operating mode (bridge, parallel, bi-amp)

NORMAL OPERATING LEVELS

The amp's protective muting system guards against excessive internal temperatures. With normal ventilation and 4 to 8 ohm loads, the amplifier will handle any signal level including overdrive. Lower load impedances and higher signal levels produce more internal heating. When using 2 ohm loads, frequent or prolonged clipping may trigger power cutback or protective muting.

BRIDGE mode doubles the output impedance of the amp; 4 ohms is the minimum load impedance. Heavy clipping may cause muting. If this happens, see Troubleshooting section.

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Contents Powerlight 2A FCC Interference Statement Explanation of Graphical SymbolsRefer servicing to qualified personnel Copyright 2000, 2007 QSC Audio Products, IncTable of Contents Front Panel Introduction PL2A OverviewSide Panel Rear PanelFeatures & SETUP- Rear Panel Switches Input Configuration Bridge Mode Output Connection Features & SETUP- Rear Panel Switches ModeFeatures & SETUP- Rear Panel Switches Dataport Input Signal Page Subaudio filter frequency response- filter off Crossover frequency is programmable Features & SETUP- Side Panel Switches Horn Boost Power Limiter Mode Features & SETUP- Side Panel Switches Power LimiterFour tracking modes are available for your use Power Limiter Tracking Features & SETUP- Side Panel Switches Clip LimiterWhen to use it Page Page Other Accessories Dataport ConnectorFront Panel LED Indicators Gain ControlsSecuring the Front Ears to the Rack Rails Installation Rack Mounting and Mounting DimensionsSupporting the Rear of the Amplifier FAN Cooling Installation FAN Cooling & AC MainsOperating Voltage AC mains Inputs Connections InputsConnections Outputs BRIDGED-MONO PrecautionsBinding post outputs Installing the Security Panel Security Panel USE & InstallationSecurity Panel Removing the Security PanelGain Controls OperationTroubleshooting no Sound Indication Clip Indicator not Flashing Problem Distorted SoundTechnical Overview Block Diagram & Operational Details Basic functional block diagram of PowerLight power supply Specification S PL218A PL224A PL230A PL236A Warranty Warranty Information & HOW to Contact QSC Audio ProductsSetup Sheet for PL2A Amplifiers Setup Sheet for PL2A Amplifiers

PL224A, PL236A, PL218A, PL230A specifications

QSC Audio is known for its high-quality professional audio equipment, and the PL series amplifiers are no exception. The PL236A, PL230A, PL218A, and PL224A are designed to meet the demands of live sound applications, touring, and installations, providing powerful, reliable, and efficient performance.

The PL236A is a versatile power amplifier capable of delivering 800 watts per channel at 4 ohms, making it suitable for a variety of applications. It utilizes Class H technology, which boosts efficiency while minimizing heat generation, allowing for cooler operation and longer lifespan. The PL236A is equipped with QSC's Advanced Thermal Management technology, featuring variable-speed fans that adjust to the temperature, ensuring optimal performance under various conditions.

The PL230A is another exceptional model in the series, offering 600 watts per channel at 4 ohms. This amplifier is perfect for smaller systems or as part of a larger configuration. Its compact design makes it easy to transport, while its robust construction guarantees durability in demanding environments. Like the PL236A, it is also designed with Class H architecture and Advanced Thermal Management, providing both efficiency and reliability.

For those in need of sub-bass reinforcement, the PL218A is a dual 18-inch subwoofer amplifier that provides significant power output, reaching up to 2400 watts at 4 ohms. Its design focuses on low-frequency performance, ensuring that it can handle even the most demanding bass signals without distortion. The PL218A incorporates QSC’s patented Power Factor Correction technology, ensuring optimal energy consumption and minimizing electrical load.

Finally, the PL224A is a dual-channel amplifier with 1200 watts per channel at 4 ohms, designed with flexibility and scalability in mind. It is perfect for driving full-range systems or can be combined with additional amplification for larger setups. The PL224A features a comprehensive limiter section that protects speakers from over-excursion and ensures clean audio output.

All models in the QSC PL series come with user-friendly rear panel controls for easy setup and operation, along with input XLR connectors and speakON outputs for secure and efficient connections. The amplifiers also feature a robust chassis design for enhanced durability, and their lightweight construction allows for easy transport and installation.

In summary, the QSC PL236A, PL230A, PL218A, and PL224A amplifiers exemplify modern audio technology, offering powerful performance, flexibility, and reliability for a variety of professional audio applications. With their robust design and advanced features, these amplifiers are ideal for sound reinforcement in live settings and permanent installations alike.
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