Crown Audio 160MA operation manual Service

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Commercial Audio Series Mixer-Amplifiers

6 Service

Crown mixer-amplifiers are quality units that rarely require servicing. Before returning your unit for servicing, please contact Crown Technical Support to verify the need for servicing.

Warranty is only valid within the country in which the product was purchased.

This unit has very sophisticated circuitry which should only be serviced by a fully trained techni- cian. This is one reason why each unit bears the following label:

CAUTION: To prevent electric shock, do not remove covers. No user serviceable parts inside. Refer servicing to a qualified technician.

Complete the Crown Audio Factory Service Information form, in the back of this manual, when returning a Crown product to the factory or autho- rized service center. The form must be included with your product inside the box or in a packing slip envelope securely attached to the outside of the shipping carton. Do not send this form separately.

Worldwide Service

Service may be obtained only through Crown distributors. (Contact your local Crown/Amcron representative or our office for a list of authorized service centers.) To obtain service, simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center. They will handle the necessary paperwork and repair.

Remember to transport your unit in the original factory pack.

US and Canada Service

Service may be obtained in one of two ways: from an authorized service center or from the factory. You may choose either. It is important that you have your copy of the bill of sale as your proof of purchase.

Service at a US or Canada Service Center

This method usually saves the most time and effort. Simply present your bill of sale along with the defective unit to an authorized service center to obtain service. They will handle the necessary paperwork and repair. Remember to transport the

unit in the original factory pack. A list of authorized service centers in your area can be obtained from Crown Factory Service, or online from

http://www.crownaudio.com/support/servcent.htm.

Factory Service

Crown accepts no responsibility for non-serviceable product that is sent to us for factory repair. It is the owner’s responsibility to ensure that their product is serviceable prior to sending it to the factory. Serviceable product list is available at

http://crownweb.crownintl.com/crownrma/.

For more information, please contact us direct.

A Service Return Authorization (SRA) is required for product being sent to the factory for repair. An SRA can be completed online at www.crownaudio. com/support/factserv.htm. If you do not have access to the web, please call Crown’s Customer Service at 574.294.8200 or 800.342.6939 exten- sion 8205 in North America, Puerto Rico and the Virgin Islands only.

For warranty service, we will pay for ground shipping both ways in the United States. Contact Crown Customer Service to obtain prepaid shipping labels prior to sending the unit. Or, if you prefer, you may prepay the cost of shipping, and Crown will reimburse you. Send copies of the shipping receipts to Crown to receive reimbursement.

Your repaired unit will be returned via UPS ground. Please contact us if other arrangements are required.

Factory Service Shipping Instruc- tions:

1.Service Return Authorization (SRA) is required for product being sent to the factory for service. Please complete the SRA by going to www. crownaudio.com/support/factserv.htm. If you do not have access to our website, call 1.800.342.6939, extension 8205 and we’ll create the SRA for you.

2.See packing instructions that follow.

3.Ship product to:

CROWN AUDIO FACTORY SERVICE 1718 W MISHAWKA RD. ELKHART, IN 46517

4.Use a bold black marker and write the SRA number on three sides of the box.

5.Record the SRA number for future reference. The SRA number can be used to check the repair status.

Packing Instructions

Important: These instructions must be followed. If they are not followed, Crown Audio, Inc. assumes no responsibility for damaged goods and/or acces- sories that are sent with your unit.

1.Fill out and include the Crown Audio Fac- tory Service Information sheet in the back of this manual.

2.Do not ship any accessories (manuals, cords, hardware, etc.) with your unit. These items are not needed to service your product. We will not be responsible for these items.

3.When shipping your Crown product, it is important that it has adequate protection. We recommend you use the original pack material when returning the product for repair (Figure 9.1). If you do not have the original box, please call Crown at 800.342.6939 or 574.294.8210 and order new pack material. (Do not ship your unit in a wood or metal cabinet.)

4.If you provide your own shipping pack, the minimum recommended requirements for materials are as follows:

a.275 P.S.I. burst test, Double-Wall carton that allows for 2-inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit.

b.Securely seal the package with an adequate carton sealing tape.

c.Do not use light boxes or “peanuts”. Damage caused by poor packaging will not be covered under warranty.

Enclose the completed Crown Audio Factory Service Information form (or securely attach it to the outside of carton) and re-seal the shipping pack with a sturdy carton sealing tape.

Cardboard support

Mixer-amp

Bag

Cardboard

support

Estimate Approval

Approval of estimate must be given within 30 days after being notified by Crown Audio Inc. Units still in the possession of Crown after 30 days of the esti- mate will become the property of Crown Audio Inc.

Payment of Non-Warranty Repairs Payment on out-of-warranty repairs must be received within 30 days of the repair date. Units unclaimed after 30 days become the property of Crown Audio Inc.

If you have any questions, please contact Crown Factory Service.

Crown Factory Service

1718 W. Mishawaka Rd.,

Elkhart, Indiana 46517 U.S.A.

Telephone:

574.294.8200

800.342.6939 (North America, Puerto Rico, and Virgin Islands only)

Facsimile:

574.294.8301 (Technical Support)

574.294.8124 (Factory Service)

Web site:

http://www.crownaudio.com

Operation Manual

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Contents Some models may be exported under the name Amcron Commercial Audio SeriesWichtige Sicherheitsinstruktionen Important Safety InstructionsModel Names 135MA, 160MA EMC Standards Safety StandardCrown International, Inc European Representative’s Name and AddressTable of Contents Welcome FeaturesPower Switch Pushbutton on-off switch SetupPower Indicator Blue LED indicates Power onTelephone MOH Output Connector Back Panel Controls, Connectors and IndicatorsInput Connectors 2-4 160MA or 2-3 135MA Unbalanced line-level RCA-type connectors, summed to monoRepeat steps 3-6 for the left side of the chassis How to Attach the Unit to a RackInstallation Place a rack ear flush with the right front of the chassisNoise over long cable runs Choose Input Wire and ConnectorsChoose Output Wire and Connectors DistanceMusic-On-Hold Connections Connector provides.8-Ohm Wire Your SystemTypical input and output wiring is shown in Figure Phantom PowerOperation Condition Distorted sound TroubleshootingCondition No power to the mixer-amplifier No input signal Input signal level is very lowOutput % at rated power at 1 kHz % at 5W at 1 kHzSpecifications KHz with 0.5% THDService 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.