LED Indicators, Abnormal indication, Brdg and PAR

LED Indicators

The LED indicators can be used to monitor system operation and identify common prob- lems.

POWER: GREEN, above the BRIDGE (BRDG) and PARALLEL (PAR) indicators.

Normal indication: AC switch ON: LED will illuminate.

If no indication: Check AC power cord and AC outlet. Confirm that DataPort 1-2 is not holding the amp in 'Standby' mode.

CLIP: RED, adjacent the channel number markings.

Normal indication: illuminates whenever the amplifier is driven beyond full power. The resulting distortion corresponds to the brightness of the LED. Distortion that causes only brief flashing may not be audible.

-During muting, the LED fully illuminates. This occurs during normal "On-Off" muting.

Abnormal indication:

-Bright red illumination while the amp is being used indicates either thermal muting or a shorted output.

-If the amplifier overheats, the fan will run at full speed, and operation should resume within one minute. Allow the fan to run, and make sure the amplifier ventilation is adequate.

-A shorted or overloaded output circuit will cause excessive Clip flashing and possible overheating.

If distortion is audible without a Clip indication, the problem is either before or after the amplifier. Check for damaged speakers or overloaded signal source. The amplifier Gain control should be in the upper half of its range to prevent input overload.

SIGNAL, -20dB,-10dB:GREEN, under each Clip LED.

Normal indication: The SIGNAL indicator illuminates when the input signal exceeds -35 dB, the -20dB indicator illuminates when the signal exceeds -20dB, and the -10dB indicator illuminates when the signal exceeds -10dB.

If no indication: check Gain settings and increase gain if necessary. Check input con- nections and audio source for signal. If the Clip LED illuminates with little or no Signal indication, check the output wiring for shorts.

Abnormal indication: If the SIGNAL (SIG), -20dB, or -10dB LED illuminates with no signal input, there may be system oscillations or some other malfunction. Disconnect the load and fully reduce the gain. If the LED remains on, the amp may need servicing.

BRDG and PAR:

Each channel pair has a YELLOW LED for Bridge Mode, and an ORANGE LED for Paral- lel mode. These show how the rear panel switches are set (see Setting the Mode Switches). In Stereo mode, both LEDs should be OFF.

LED indicators on 2-channel models.

LED indicators on 4-channel models.

CX302, CX1202V, CX502, CX702, CX1102 specifications

QSC Audio has established itself as a leader in professional audio solutions, and their CX series amplifiers, including the CX204V, CX254, and CX404, stand out for their performance and versatility. These amplifiers are specifically designed to meet the needs of commercial audio applications, such as in venues, corporate environments, and educational institutions.

The CX204V is a 2-channel amplifier that delivers 200 watts per channel at 4 ohms, making it ideal for smaller venues or installations that require high-quality audio without overwhelming power. One of its key features is the inclusion of built-in DSP (Digital Signal Processing) capabilities, allowing users to optimize their sound with advanced filtering and equalization options. Additionally, the amplifier supports a range of input options, including balanced XLR and 1/4-inch connectors, providing flexibility for various audio setups.

Moving to the CX254, this 2-channel amplifier boosts power output to 250 watts per channel at 4 ohms, making it suitable for larger spaces that necessitate a bit more oomph. The CX254 also includes QSC’s Power Factor Correction technology, which ensures efficient power usage and greater amplification performance, even during demanding situations. Furthermore, it features RS-232 control capabilities, providing users with remote operation options and making integration into existing audio systems seamless.

The CX404 takes things a step further with its 4-channel configuration, delivering 200 watts per channel at 4 ohms. This amplifier is particularly well-suited for multi-zone applications where audio needs to be distributed across various areas. With its advanced overheating protection and short-circuit protection features, the CX404 is built for durability and reliability, ensuring consistent performance without the risk of damage during extended use.

All three amplifiers in the CX series include QSC's innovative Class D topology, offering lightweight and compact design without sacrificing power or audio quality. The CX series is also distinguished by its robust construction, including a rugged chassis designed to withstand the rigors of installation and performance use.

In summary, the QSC Audio CX204V, CX254, and CX404 seamlessly combine power, efficiency, and versatility, making them ideal choices for a variety of commercial audio applications. Their built-in technologies, advanced features, and solid construction emphasize QSC’s commitment to delivering exceptional sound experiences.