Outputs

The PLX 1104 and PLX 1804 models are equipped with Speakon output connectors for each channel. PLX 1802, PLX 2502, PLX 3102, and PLX 3602 models are equipped with Speakon and binding post output connectors.

Wiring connections are shown on the back of the chassis. Carefully note the markings and maintain consistent loudspeaker polarity for optimum system performance.

Speakon Output Connectors

If making Speakon cables, be sure to connect the loudspeaker wiring as shown on the chassis. Channel 1’s Speakon provides 4-wire (Ch 1 + Ch 2) connection; Channel 2’s Speakon provides 2-wire (Ch 2 only) connection. Appendix A provides Speakon connection reference.

Stereo and Parallel Mode: Connect each loudspeaker to its own chan- nel of the amplifier, as shown on the chassis label. The INPUT CONFIGU- RATION switch must be set for STEREO or PARALLEL mode.

Bridge Mode (PLX1802/2502/3102/3602 models only): Use Channel 1’s Speakon for Bridge mode output connection. Bridge mode configures the channel pair to drive a single high-power loudspeaker load. The INPUT CONFIGURATION switch must be set for BRIDGE mode. Use only Channel 1’s input and Gain control. Set Channel 2’s Gain control at minimum.

Binding Post Connectors (PLX 1802/2502/3102/3602 models only)

Stereo and Parallel Mode: Connect each loudspeaker to its own channel of the amplifier, as shown on the chassis label. The INPUT CONFIGURATION switch must be set for STEREO or PARALLEL mode.

Bridge Mode: Bridge mode configures the channel pair to drive a single high-power loudspeaker load. The INPUT CONFIGURATION switch must be set for BRIDGE mode. Use only Channel 1’s input and Gain control. Set Channel 2’s Gain control at minimum.

OUTPUT TERMINAL SAFETY WARNING! Do not touch output terminals while amplifier power is on. Make all connections with amplifier turned off. Risk of hazard- ous energy!

PLX 1104 and PLX 1804 Output Connectors: Do not use less than 4 ohm impedance loads with PLX 1104 and PLX 1804 models.

PLX 1802, PLX 2502, PLX 3102, and PLX 3602 Output Connectors: Do not use less than 2 ohm impedance loads with these models.

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QSC Audio PLX 1104 user manual Outputs, Speakon Output Connectors
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PLX 1104 specifications

The QSC Audio PLX 1104 is a versatile and powerful power amplifier designed to meet the demands of live sound applications, installations, and more. Renowned for its exceptional performance and reliable operation, the PLX 1104 has become a preferred choice for sound engineers and audio professionals alike.

One of the standout features of the PLX 1104 is its lightweight design. Weighing in at just 10.5 pounds, this amplifier is easy to transport and install, making it ideal for mobile applications. Its compact form factor allows for efficient use of space in equipment racks and allows for quick setups and takedowns during events.

The QSC PLX 1104 outputs an impressive 1,000 watts per channel at 8 ohms and 1,200 watts at 4 ohms, providing ample power for driving a wide range of loudspeakers. This capability makes it suitable for various applications, from small clubs to larger venues requiring robust sound reinforcement. The amplification system utilizes a high-efficiency design that significantly reduces power consumption and heat generation, enhancing reliability and longevity.

In terms of connectivity, the PLX 1104 features balanced XLR inputs and Neutrik Speakon outputs, ensuring compatibility with a broad array of sound systems. Its intuitive control layout, including a rear-mounted gain control for each channel, allows for easy dial-in of the desired output level.

The PLX 1104 employs QSC's advanced proprietary technology to deliver exceptional audio quality. This includes sophisticated output transistors and a high-frequency protection circuit, ensuring that the amplifier provides clean and undistorted sound, even at high output levels. Furthermore, the built-in thermal management system helps to prevent overheating, further increasing the reliability of the amplifier in demanding environments.

Additional features of the PLX 1104 include a switchable low-frequency filter that can help to improve the overall clarity of sound, particularly in live sound scenarios where low-end muddying can occur. The amplifier is also equipped with a front-panel LED status indicator that serves as a visual cue for the operational status of the unit.

In summary, the QSC Audio PLX 1104 is a testament to modern amplifier technology, combining lightweight portability with powerful performance and rich features. Its ability to deliver high-quality audio while being exceptionally user-friendly makes it a go-to solution for audio professionals who require both reliability and flexibility in diverse sound reinforcement situations.
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