Crown Audio M Series Choose Input Wire and Connectors, Choose Output Wire and Connectors

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M Series Power Amplifiers

2 Setup

2.4 Choose Input Wire and Connectors

Crown recommends using pre-built or professionally wired, bal- anced line (two-conductor plus shield), 22-24 gauge cables and connectors. Depending upon which amplifier input you choose, you should use either 3-pin male XLR connectors, TRS phone connectors, or terminal forks at the amplifier inputs.

Unbalanced line may also be used but may result in noise over long cable runs.

Note: Amplifier input connectors not used for audio signal input may be used for daisy-chaining of the audio signal to other com- ponents.

Figure 2.3 shows connector pin assignments for balanced wiring, and Figure 2.4 shows connector pin assignments for unbalanced wiring.

NOTE: Custom wiring should only be performed by qualified personnel.

2.5 Choose Output Wire and Connectors

Crown recommends using pre-built or professionally wired, high- quality, two- or four-conductor, heavy gauge speaker wire and connectors. You may use two 4-pole Speakon® connectors (Fig- ure 2.5 and Table 1) or banana plugs, spade lugs, or bare wire for your output connectors (Figure 2.6). To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable connectors.

Note: Binding post outputs on European models come with safety plugs installed to prevent European power- cord plugs from being inserted. The top & bottom entry positions for these connectors should therefore be used with European models.

Using the guidelines below, select the appropriate size of wire based on the distance from amplifier to speaker.

Distance

Wire Size

up to 25 ft.

16 AWG

26-40 ft.

14

AWG

41-60 ft.

12

AWG

61-100 ft.

10

AWG

101-150 ft.

8

AWG

151-250 ft.

6

AWG

CAUTION: Never use shielded cable for output wiring.

Figure 2.3

Balanced Input

Connector Wiring

Figure 2.5

Left: Speakon®Output Connector on Back Panel

Right: Speakon®Cable Connector

Table 1 Speakon® Output Pin Assignments

Figure 2.4

Unbalanced Input

Connector Wiring

Figure 2.6

5-Way Binding Post Connections

Operation Manual

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Contents Some models may be exported under the name Amcron M240Importantes Instructions de Sécurité Important Safety InstructionsEuropean Representatives Name and Address Safety StandardDeclaration of Conformity Crown International, IncTable of Contents How to Use This Manual FeaturesWelcome Ensure Proper Cooling SetupInstall Your Amplifier Unpack Your AmplifierChoose Output Wire and Connectors Choose Input Wire and ConnectorsDistance How to Parallel the Inputs in Stereo Mode Wire Your System Stereo ModeInputs Use only the Channel-1 input connec- tor Bridge-Mono ModeTypical input and output wiring is shown Set the Mode Switch to BridgeConnect to AC Mains Startup ProcedureOperation PrecautionsCh-2 Level Control Ch-1 Level ControlSignal, Clip and Fault Indicators Front Panel Controls Indicators Power SwitchReset Switch Power IndicatorCrown SST Modules Fault MonitoringOptional Barrier Block Outputs Optional 0.775-V Input Sensi- tivity SettingTamper-Resistant Hole Plugs Series Amplifier Principles of OperationNeutrik Speakon connector. Both Channel Condition Power indicator is off TroubleshootingKHz with 0.5% THD SpecificationsVentilation Cooling Dimensions Weight Net Shipping Crosstalk below rated power, 20 Hz to 20 kHzCommon Mode Rejection CMR20 Hz to 1 kHz Voltage Gain at maximum level settingService 12/01 WarrantyWorldwide Except USA & Canada This page Intentionally Left Blank Crown Audio Factory Service Information Series Power Amplifiers Series Power Amplifiers

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.
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