Crown SST Modules, Fault Monitoring | Crown Audio M Series guide

M Series Power Amplifiers

4 Advanced Features and Options

4.1 Crown SST Modules

Crown optional SST (System Solution Topolo- gies) modules were specially designed to improve the versatility of your audio system. They feature a variety of professional signal routing and filtering capabilities, with active crossovers that allow the audio signal to be split and sent to auxiliary amplifiers. Your amplifier may have come with an SST module already factory-installed, or your choice of SST modules can be easily added to the amplifier by any authorized Crown Service Center.

For information on wiring and configuration of amplifiers equipped with an optional Crown SST crossover module, please refer to the SST Crossover Reference Manual included in your literature package.

For more information and for newer SST mod- ules, see the Crown website at www.crownau- dio.com.

4.2 Fault Monitoring

The Fault (RJ-11) jack, which looks like a tele- phone plug, is located on the back of your M- Series amplifier. It gives you an easy way to remotely monitor the amplifier’s fault status. To set up a circuit that will cause an LED to light whenever a fault status occurs, you can simply use the suggested circuit shown in Figure 4.1.

When using this circuit, the LED will glow whenever the amplifier is in one of four states: a channel’s heatsink has reached its temperature limit, the transformer has reached its tempera- ture limit, the amplifier has just been turned on and is in its turn-on-delay mode, or the ampli- fier is turned off.

If you choose to design your own circuit to interface this signal to your system, note that this RJ jack is polarity sensitive. Pin 2 must be grounded, and Pin 5 must be supplied with a positive voltage pull up (positive with respect to ground). Refer to Figure 4.2 for RJ jack pin assignments.

The mating connector for the M-Series RJ11 jack contains 4 contact pins in a 6-slot case, as shown. For additional information please con- tact your local dealer or Crown Technical Sup- port.

The maximum signal that can be exposed to the fault jack is 35 VDC and 10 mA. Best results are obtained with 10 mA LEDs.

Figure 4.2 RJ Jack Wiring and Pin Assignments

Figure 4.1 Fault Status LED Circuitry

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Operation Manual

M Series specifications

Crown Audio's M Series amplifiers are a renowned collection in the realm of professional audio equipment, recognized for their reliability, performance, and innovation. Designed specifically for commercial installations, the M Series provides powerful amplification with exceptional audio quality, making it a prime choice for venues such as auditoriums, churches, and theaters.

One of the standout features of the M Series is its high-efficiency Class D topology. This design not only reduces power consumption but also minimizes heat generation, which is crucial for long-term reliability and performance in demanding environments. The amplifiers are capable of delivering high output power while maintaining low distortion, ensuring that the audio experience remains clear and robust, even at high volumes.

The M Series amplifiers are equipped with a range of power options, ensuring that users can find a model that suits their specific needs. The lineup typically includes models ranging from 2-channel to 4-channel configurations, with power ratings suitable for various applications. This versatility allows for flexible setups, whether powering large PA systems or smaller setups for more intimate settings.

Integration with control systems is effortless, thanks to the M Series’ comprehensive connectivity options. The amplifiers feature XLR and TRS inputs, allowing for seamless integration with a wide array of audio sources. Their ability to be controlled remotely allows for convenient adjustments during live events or installations, further enhancing their usability.

The built-in DSP (Digital Signal Processing) is another critical highlight of the M Series. This technology provides users with significant control over the audio signal, enabling adjustments such as equalization, limiting, and crossover settings to fine-tune the sound output to perfection. The advanced protection circuitry ensures that the amplifiers remain safe from overheating and signal overloads, thus extending their lifespan and reliability.

Robust construction is a signature characteristic of the M Series, designed to withstand the rigors of professional use. The amplifiers feature a rugged chassis that can endure the demands of touring or permanent installations. Additionally, the fan-cooled design aids in maintaining optimal operating temperatures, ensuring performance consistency even during extended periods of use.

In conclusion, Crown Audio's M Series amplifiers combine power, efficiency, and cutting-edge technology to create an exceptional solution for professional audio applications. Whether used in concert halls, clubs, or corporate environments, the M Series continues to set a high standard for reliability and performance in the world of audio amplification.