Crown Audio 160MA Troubleshooting, Condition No power to the mixer-amplifier, Condition No sound

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Commercial Audio Series Mixer-Amplifiers

4 Troubleshooting

CONDITION: No power to the mixer-amplifier.

POSSIBLE REASON:

The mixer-amplifier’s Power switch is off.

The mixer-amplifier is not plugged into the power receptacle.

The mixer-amplifier’s high-voltage power sup- ply circuit breaker has tripped. Verify that the AC mains voltage is correct.

CONDITION: Distorted sound.

POSSIBLE REASON:

Input signal level is too high. Turn down your input volume controls. NOTE: Your mixer- am- plifier should never be operated at a level which causes the Clip LEDS to illuminate constantly.

CONDITION: Distorted sound.

POSSIBLE REASON:

Input signal level is too high. Turn down your input volume controls. NOTE: Your mixer- am- plifier should never be operated at a level which causes the Clip LEDS to illuminate constantly.

Master volume level is too high. Turn it down to about 3/4 of maximum level.

CONDITION: No sound.

POSSIBLE REASON:

• The amplifier is in “fault” mode. A Fault status can be triggered when one of the amplifier’s protection circuits is activated. First disconnect your speakers from the affected channel(s) one by one to determine if one of the loads is shorted. If an amplifier channel has a thermal fault, there will be no indication on the front panel, but the amp will recover after cooling.

If operation does not return to normal after restarting your amp, press the Reset button on the back of the unit. If that does not work, return the unit to Crown or an authorized Crown Service Center for servicing.

CONDITION: No sound.

POSSIBLE REASON:

• No input signal.

• Input signal level is very low.

KEY

LED OFF

LED ON

Operation Manual

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Contents Some models may be exported under the name Amcron Commercial Audio SeriesWichtige Sicherheitsinstruktionen Important Safety InstructionsCrown International, Inc Safety StandardEuropean Representative’s Name and Address Model Names 135MA, 160MA EMC StandardsTable of Contents Welcome FeaturesPower Indicator Blue LED indicates SetupPower on Power Switch Pushbutton on-off switchInput Connectors 2-4 160MA or 2-3 135MA Back Panel Controls, Connectors and IndicatorsUnbalanced line-level RCA-type connectors, summed to mono Telephone MOH Output ConnectorInstallation How to Attach the Unit to a RackPlace a rack ear flush with the right front of the chassis Repeat steps 3-6 for the left side of the chassisNoise over long cable runs Choose Input Wire and ConnectorsDistance Choose Output Wire and ConnectorsMusic-On-Hold Connections Typical input and output wiring is shown in Figure Wire Your SystemPhantom Power Connector provides.8-OhmOperation Condition No power to the mixer-amplifier TroubleshootingNo input signal Input signal level is very low Condition Distorted soundSpecifications % at rated power at 1 kHz % at 5W at 1 kHzKHz with 0.5% THD OutputService United States & Canada WarrantyWorldwide Except USA & Canada This page intentionally left blank Fax Crown Audio, IncThis page intentionally left blank Credit card information Crown Audio Factory Service 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.