Crown Audio 160MA operation manual How to Attach the Unit to a Rack, Installation

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Commercial Audio Series Mixer-Amplifiers

2 Setup

2.1 Installation

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

Use a standard 19-inch (48.3 cm) equipment rack with an optional rack-mount kit. See Figure 2.1 for dimensions.

You may also stack mixer-amps without using a cabinet, or you may place a single mixer-amp on a surface with 12 inches of air space around the unit for convection cooling.

NOTE: When transporting in a rack, mixer-amps should be supported at the front and back.

When using an equipment rack, do not mount units directly on top of each other. Allow 2 rack units

(3.5 inches) between units for convection cooling. The side walls of the rack should be a minimum of two inches (5.1 cm) away from the mixer-ampli- fier sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the mixer- amplifier back panel.

2.2 How to Attach the Unit to a Rack

1.Order the optional Rack-Mount Kit from your Crown dealer. Part no. RM1 is a “single rack mount kit” for mounting a single MA unit in a rack. Part no. RM2 is a “double rack mount kit” for mounting two MA units side-by-side in a rack.

2.See Figure 2.2. Remove the two screws from each side of the chassis near the front.

3.Place a rack ear flush with the right front of the chassis.

4.Insert a screw that you removed into the bottom hole of the rack ear and chassis. Screw it in.

5.Insert a screw that you removed into the center hole of the rack ear and chassis. Screw it in.

6.Insert one of the supplied screws into the top hole of the rack ear and chassis. Screw it in.

7.Repeat steps 3-6 for the left side of the chassis.

Single rack mount kit

Figure 2.2 How to Connect Rack Ears (Not to Scale)

Double rack mount kit

Figure 2.1 Dimensions

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Operation Manual

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Contents Commercial Audio Series Some models may be exported under the name AmcronImportant Safety Instructions Wichtige SicherheitsinstruktionenSafety Standard Crown International, IncEuropean Representative’s Name and Address Model Names 135MA, 160MA EMC StandardsTable of Contents Features WelcomeSetup Power Indicator Blue LED indicatesPower on Power Switch Pushbutton on-off switchBack Panel Controls, Connectors and Indicators Input Connectors 2-4 160MA or 2-3 135MAUnbalanced line-level RCA-type connectors, summed to mono Telephone MOH Output ConnectorHow to Attach the Unit to a Rack InstallationPlace a rack ear flush with the right front of the chassis Repeat steps 3-6 for the left side of the chassisChoose Input Wire and Connectors Noise over long cable runsMusic-On-Hold Connections Choose Output Wire and ConnectorsDistance Wire Your System Typical input and output wiring is shown in FigurePhantom Power Connector provides.8-OhmOperation Troubleshooting Condition No power to the mixer-amplifierNo input signal Input signal level is very low Condition Distorted sound% at rated power at 1 kHz % at 5W at 1 kHz SpecificationsKHz with 0.5% THD OutputService Warranty United States & CanadaWorldwide Except USA & Canada This page intentionally left blank Crown Audio, Inc FaxThis page intentionally left blank Crown Audio Factory Service Information Credit card informationThis page intentionally left blank This page intentionally left blank
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160MA specifications

Crown Audio, a leading manufacturer of professional audio equipment, has made a name for itself with its innovative amplifier designs. Among their extensive lineup, the Crown 160MA and 135MA models stand out as highly regarded solutions for various applications, particularly in commercial audio systems, installations, and even mobile setups.

The Crown 160MA is a 160-watt, 2-channel amplifier that delivers robust performance while ensuring outstanding sound quality. Designed with versatility in mind, it is well-suited for powering speakers in both small venues and larger installations where high-quality audio is required. The amplifier features a built-in mixer with three inputs, allowing users to easily connect multiple audio sources. This feature is particularly beneficial in settings such as community centers, conference rooms, and educational institutions.

On the other hand, the Crown 135MA is a slightly smaller yet equally capable 135-watt, 2-channel amplifier, designed for applications where space may be limited. It retains many of the key features found in the 160MA, offering reliable performance while providing the necessary power for smaller speaker systems. The integrated mixer also accommodates various audio inputs, simplifying connections in various environments.

Both models incorporate advanced technologies that enhance performance and reliability. They utilize Class D amplification, which not only reduces energy consumption but also minimizes heat generation, allowing for a more compact design without sacrificing output power. This makes them ideal for permanent installations where space is a constraint. Additionally, the amplifiers come equipped with comprehensive protection circuitry, safeguarding against potential overloads and thermal issues.

The Crown 160MA and 135MA are also designed with user-friendly controls and indicators, making them accessible for both seasoned audio professionals and newcomers. Their rugged built quality ensures durability in diverse environments, whether being used in commercial spaces, houses of worship, or temporary events.

In summary, the Crown Audio 160MA and 135MA offer a compelling combination of power, sound quality, and versatility. Their innovative features, such as built-in mixing capabilities, efficient Class D technology, and robust protective measures, make them excellent choices for anyone seeking reliable amplification solutions. Whether for small to medium-sized installations or mobile setups, these amplifiers are engineered to deliver exceptional audio performance for any application.