Fault Monitoring, Location of Fault Jack

CE Series Power Amplifiers

4 Advanced Features

and Options

4.2.2 Fault Monitoring

The Fault (RJ-11) jack, which looks like a telephone jack, is located on the back of your CE Series ampli- fier (Figure 4.3). 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 sug- gested circuit shown in Figure 4.4.

When using this circuit, the LED will glow under any of these conditions:

•The amplifier has just been turned on and is still in the 4-second turn-on delay.

•The heatsinks are too hot.

•The transformer thermal protection is activated.

•The amplifier output wires have developed a short circuit.

•The limiter has been overdriven by > 6 dB for a long time.

•The amplifier output stage has stopped operating. Refer the unit to an authorized Crown Service Cen- ter.

•The amplifier 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 4.5 for RJ jack pin assignments. The maximum signal that can be exposed to the Fault jack is 35VDC and 10 mA. Best results are obtained with 10 mA LEDs.

The mating connector for the CE Series TX RJ-11 jack contains 4 contact pins in a 6-slot case, as shown. For additional information please contact your local dealer or Crown Technical Support.

Figure 4.3 Location of Fault Jack

Figure 4.4 Fault Status LED Circuitry

Figure 4.5 RJ-11 Jack Wiring and Pin Assignments

Operation Manual

page 17

CE Series specifications

Crown Audio’s CE Series amplifiers are designed to deliver high performance and reliability for a variety of applications, including live sound, commercial installations, and houses of worship. Renowned for their durability and efficiency, the CE Series combines advanced technology with user-friendly features to appeal to both professional audio engineers and casual users.

One of the standout characteristics of the CE Series is its robust construction. Built to withstand the rigors of live events and handling, these amplifiers are housed in a rugged chassis that ensures long-term durability. The fan cooling system is designed for efficient thermal management, keeping the amplifier cool even during extended use, which is crucial for maintaining optimal performance.

The CE Series boasts a range of power options, making it versatile for different setups. With models delivering from 1500W to over 4000W per channel, users can choose the appropriate amplifier to match their specific requirements. This flexibility allows the CE Series to support a wide array of speakers and systems, whether for small venues or large-scale arenas.

Crown utilizes innovative technologies in the CE Series amplifiers. One of the key features is the DSP (Digital Signal Processing), which enhances sound quality and allows for precise control over the audio output. The onboard DSP includes presets for various speaker configurations, EQ settings, and time alignment features, facilitating quick adjustments to achieve the desired sound quality.

Another notable feature is the built-in limiters, which protect both the amplifier and speakers from damage due to overload or clipping. This protection ensures reliability during high-pressure situations, such as concerts or events where audio levels can fluctuate dramatically.

Connectivity options in the CE Series are also comprehensive. The amplifiers come equipped with both analog and digital inputs, allowing compatibility with a wide range of audio sources. Additionally, the rear panel includes speakON® outputs for quick and secure speaker connections.

With its combination of power, reliability, and advanced technology, Crown Audio’s CE Series amplifiers stand out in the crowded field of professional audio equipment. These features make the CE Series an excellent choice for audio professionals seeking quality performance across various applications. Whether for a permanent installation or a touring setup, the CE Series amplifiers deliver the sound, durability, and versatility required by today’s audio engineers.