QSC PLX Series PLX 1602 User Manual

Pages 32

Year 1998

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QSC PLX Series PLX 1602 Specification

The QSC PLX Series PLX 1602 Amplifier is a professional-grade, high-performance audio amplifier designed for demanding live sound and installed sound applications. This amplifier delivers a robust 1600 watts of power at 2 ohms, 1000 watts at 4 ohms, and 500 watts at 8 ohms per channel, ensuring ample power and headroom for a variety of audio environments. The PLX 1602 features advanced QSC PowerLight technology, which employs a high-frequency switch mode power supply to dramatically reduce weight while maintaining high efficiency and reliability.

The amplifier's design emphasizes both power and portability, with a lightweight chassis that makes it ideal for touring professionals and mobile DJs. It includes comprehensive protection circuitry, including thermal, DC, subsonic, and ultrasonic protection, to safeguard both the amplifier and connected speakers. The PLX 1602 also boasts a clip limiter to prevent distortion and extend speaker life, along with a low-frequency filter to enhance sound clarity and system performance.

Connectivity options include balanced XLR and 1/4-inch TRS inputs, plus Neutrik Speakon and binding post outputs, offering flexibility for different setups. The front panel features gain controls, signal and clip LED indicators, and a power switch for easy operation and monitoring. With a frequency response of 20 Hz to 20 kHz and a signal-to-noise ratio greater than 100 dB, the PLX 1602 ensures pristine audio quality that meets the demands of professional audio environments. This amplifier is engineered for durability and consistent performance, making it a reliable choice for any sound reinforcement application.

QSC PLX Series PLX 1602 F.A.Q.

What is the recommended way to connect a QSC PLX 1602 Amplifier to a speaker system?

To connect the QSC PLX 1602 Amplifier to a speaker system, use high-quality speaker cables with Speakon or banana plug connectors. Ensure the amplifier is turned off while making connections, and connect the output terminals to match the impedance of your speakers.

How can I troubleshoot if the QSC PLX 1602 Amplifier is not powering on?

First, check the power cable and ensure it is securely connected. Verify that the power outlet is functional. Check the amplifier's fuse and replace it if necessary. If the issue persists, consult the user manual or contact QSC support for further assistance.

What maintenance is needed for the QSC PLX 1602 Amplifier to ensure long-term reliability?

Regularly clean the exterior with a soft, dry cloth. Ensure the ventilation openings are free from dust and obstructions. Periodically check and tighten any loose connections. Have the amplifier professionally serviced every few years to maintain optimal performance.

How do I set up the QSC PLX 1602 Amplifier for stereo operation?

To set up for stereo operation, connect the left and right input signals to the corresponding input channels on the amplifier. Set the mode switch to 'Stereo' and connect the speaker outputs to the appropriate speakers. Adjust the gain controls for each channel as needed.

What should I do if one channel of the QSC PLX 1602 Amplifier is not producing sound?

Check the input connections for the affected channel to ensure they are secure. Swap the input cables between channels to see if the issue persists. Verify that the gain control for the channel is not turned down. Inspect the speaker cable and speaker for faults.

Can the QSC PLX 1602 Amplifier be used in bridged mode, and how?

Yes, the QSC PLX 1602 Amplifier can be used in bridged mode. To configure, set the mode switch to 'Bridge Mono'. Connect the input signal to Channel 1 only, and use the designated output terminals for bridged operation. Ensure the total load impedance is not less than 4 ohms.

What is the proper way to adjust the gain controls on the QSC PLX 1602 Amplifier?

Set the source device to a moderate volume level. Gradually increase the gain controls on the amplifier until the desired sound level is achieved without distortion. Avoid setting the gain too high to prevent damage to the speakers.

How can I prevent the QSC PLX 1602 Amplifier from overheating during use?

Ensure the amplifier is placed in a well-ventilated area with unobstructed airflow. Avoid stacking other equipment on top of it. Use the amplifier within its specified power limits to reduce heat generation. Consider using external cooling fans if necessary.

What indicators on the QSC PLX 1602 Amplifier should I monitor during operation?

Monitor the power LED to ensure the amplifier is on. Pay attention to the signal and clip LEDs; the signal LED should illuminate with input signal presence, while the clip LED should not light up frequently, indicating potential distortion.

How do I safely power down the QSC PLX 1602 Amplifier after use?

Turn down the gain controls to minimize the output level. Toggle the power switch to the 'off' position. Disconnect the power cable if the amplifier will not be used for an extended period. This process helps protect the system and prolongs the amplifier's life.