Crown Audio D-75A, D-45 Setup, Unpack Your Amplifier Install Your Amplifier, Manual

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D Series Power Amplifiers

2 Setup

2.1 Unpack Your Amplifier

2.2 Install Your Amplifier

2.3 Ensure Proper Cooling

Please unpack and inspect your amplifier for any damage that may have occurred during transit. If damage is found, notify the transportation company immediately. Only you can initiate a claim for ship- ping damage. Crown will be happy to help as needed. Save the shipping carton as evidence of damage for the shipper’s inspection.

We also recommend that you save all packing mate- rials so you will have them if you ever need to trans- port the unit. Never ship the unit without the factory pack.

YOU WILL NEED (not supplied):

Input wiring cables

Output wiring cables

Rack for mounting amplifier (or a stable surface for stacking)

WARNING: Before you start to set up your amplifier, make sure you read and observe the Important Safety Instructions found at the beginning of this

manual.

CAUTION: Before you begin, make sure your amplifier is disconnected from the power source, with the power switch in the “off” position and all level controls turned com- pletely down (counterclockwise).

Use a standard 19-inch (48.3 cm) equipment rack (EIA RS-310B). See Figure 2.1 for amplifier dimen- sions.

You may also stack amps without using a cabinet.

NOTE: When transporting, amplifiers should be supported at the front.

When using an equipment rack, do not mount units directly on top of each other. Allow some air space between units for convection cooling. The side walls of the rack should be a minimum of two inches (5.1 cm) away from the amplifier sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the amplifier back panel.

Figure 2.2 illustrates D Series amplifier installation.

Figure 2.2 Installation

Figure 2.1 D-45 and D-75A Dimensions

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Operation Manual

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Contents 75A Some models may be exported under the name AmcronWatch for These Symbols Important Safety InstructionsSeries amplifiers require Class 2 output wiring Use only with a cart, stand, bracket, or tableCrown International, Inc Safety StandardDeclaration of Conformity European Representative’s Name and AddressTable of Contents Welcome FeaturesHow to Use This Manual Detented level controls for precise repeat- abilitySetup Unpack Your Amplifier Install Your AmplifierManual Choose Input Wire Connectors Choose Output Wire and ConnectorsCrown recommends using professionally con- structed, high Wire Your System Dual Mode Bridge-Mono ModeInputs Connect input wiring only to CH Connect to AC Mains AC Mains Voltage Configura TionStartup Procedure Turn up the level of your audio source to an optimum levelPrecautions OperationControls, Indicators and Con- nectors Front and Back ViewsIndicators Fuse ReplacementControls Protection Options Bridge-Mono OptionInput-Sensitivity Option Troubleshooting Condition Power indicator is offSpecifications KHz KHz 20 Hz 50 Hz DualBridge-Mono 105 145 50 Hz KHz 20 Hz Dual 120Service Warranty Items Excluded from this CROWN- Warranty Worldwide Except USA & CanadaSeries Power Amplifiers Crown Factory Service Information Nature of ProblemThis page Intentionally Left Blank Series Power Amplifiers

D-45, D-75A specifications

Crown Audio has earned its reputation as a leader in professional audio solutions, with a commitment to delivering high-quality amplifier technology that meets the demands of audio professionals across various applications. Two notable models in their lineup are the Crown D-75A and D-45, both of which embody unique features that are tailored for versatility and superior performance.

The Crown D-75A is a high-performance power amplifier designed for applications where exceptional sound quality is essential. With an output power of 75 watts per channel into 8 ohms, this amplifier is capable of driving a wide range of loudspeakers, making it an excellent choice for installations in commercial venues or high-end residential systems. One of its standout features is the ability to operate in both stereo and bridged mono modes, allowing for flexible configuration options. The D-75A also incorporates Crown’s patented Class I technology, which enables it to maintain high efficiency while minimizing distortion and heat generation.

On the other hand, the Crown D-45 offers a slightly lower output power, rated at 45 watts per channel into 8 ohms. Despite its smaller size, the D-45 packs a punch with its robust performance and advanced technologies. This amplifier is well-suited for smaller venues or as a part of an audio system where space is a concern. Just like the D-75A, the D-45 features the ability to run in stereo or bridged mono modes, providing users with flexibility in setup.

Both amplifiers incorporate user-friendly front-panel controls, including level adjustments and power indicators, allowing for easy operation and monitoring. Furthermore, they are engineered with short-circuit and thermal overload protection, ensuring longevity and reliability in demanding environments.

In terms of connectivity, the D-75A and D-45 come equipped with professional-grade XLR and RCA input options, facilitating seamless integration into various audio systems. Their durable construction is designed to withstand the rigors of professional use, while also being aesthetically pleasing for any installation.

In conclusion, the Crown Audio D-75A and D-45 amplify the brand’s commitment to quality and innovation, providing professionals with dependable solutions that do not compromise on sound fidelity. Whether for a small venue or a large installation, these amplifiers deliver the performance and features audio engineers seek, making them an excellent choice in the competitive world of sound reinforcement.