Crown Macro-Tech 2402 Operation Manual
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Crown Macro-Tech 2402 Operation Manual

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Macro-Tech 2402

Operation Manual

Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Crown, Crown Audio, Amcron, Macro-Tech and ODEP are registered trademarks of Crown International. PIP and
Grounded Bridge are trademarks of Crown International. Other trademarks are the property of their respective owners.
®
Some models may be exported under the name Amcron.
®
©2007 by Crown Audio
, Inc. 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
127240-8
2/07

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Summary of Contents for Crown Macro-Tech 2402

  • Page 1: Operation Manual

    To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com. Trademark Notice: Crown, Crown Audio, Amcron, Macro-Tech and ODEP are registered trademarks of Crown International. PIP and Grounded Bridge are trademarks of Crown International. Other trademarks are the property of their respective owners.

  • Page 2: Important Safety Instructions

    MA 2402 Power Amplifier Important Safety Instructions Wichtige Sicherheitsinstruktionen Importantes Instructions de Sécurité Instrucciones de Seguridad Importantes IMPORTANT The MA-2402 amplifier requires Class 1 output wiring. Read these instructions. TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR L’amplificateur de MA-2402 exige des câbles de sortie de classe 1. Keep these instructions.

  • Page 3: Declaration Of Conformity

    United Kingdom Equipment Type: Commercial Audio Power Amplifiers Family Name: Macro-Tech Model Names: Macro-Tech 2402 EMC Standards: EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions EN 55103-1:1995 Magnetic Field Emissions-Annex A @ 10 cm and 1 M EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current ≤16A per phase)

  • Page 4: Table Of Contents

    MA 2402 Power Amplifier Table of Contents Important Safety Instructions ......2 5.1.2 Standby Mode ..........14 5.1.3 Transformer Thermal Protection ....14 Declaration of Conformity ........ 3 1 Welcome ........... 5 5.1.4 Fuses and Circuit Breakers.......15 1.1 Features ..........5 5.2 Advanced Features ...........15 2 How to Use This Manual .......

  • Page 5: Welcome

    • PIP (Programmable Input Processor) con- In addition, the Macro-Tech 2402 amplifier nector accepts accessories that tailor the includes a number of features which require amplifier to suit specific applications.

  • Page 6: Setup

    The side walls of the rack should be a down (counterclockwise). ping damage. Crown will be happy to help as minimum of 2 inches (5.1 cm) away from the ampli- needed. Save the shipping carton as evidence of fier sides, and the back of the rack should be a min- Use a standard 19-inch (48.3-cm) equipment rack.

  • Page 7: Choose Input Wire And Connectors

    MA 2402 Power Amplifier 3 Setup 3.4 Choose Input Wire and Connectors Crown recommends using pre-built or profes- sionally wired, balanced line (two-conductor plus shield), 22-24 gauge cables and connec- tors.The factory-installed PIP2-FXQ input mod- ule accepts 3-pin male XLR connectors or TRS phone connectors.

  • Page 8: Wire Your System

    MA 2402 Power Amplifier 3 Setup 3.6 Wire Your System Turn down the Level controls (fully counterclock- wise) and turn off the amplifier before wiring it as described below. 3.6.1 Stereo Mode See Figure 3.6. Set the back panel stereo/mono switch to Stereo.

  • Page 9: Parallel-Mono Mode

    Channel 1 red (+) terminal. Connect the speaker negative (-) lead to the Channel 1 black (-) terminal. Crown provides a reference of wiring pin assign- ments for commonly used connector types in the Crown Amplifier Application Guide.

  • Page 10: Set Input Sensitivity

    For help with determining your system's optimum age. gain structure (signal levels) please refer to the Crown is not liable for damage that results from Crown Amplifier Application Guide, available online overdriving other system components. at www.crownaudio.com.

  • Page 11: Front Panel Controls And Indicators

    (This option is available to prevent tampering (see presence of reserve thermal-dynamic energy. delay can be changed. Contact Crown's Techni- Section 5.3.3). cal Support Group for details.) Figure 4.1 Front Panel Controls & Indicators...

  • Page 12: Back Panel Controls, Indicators And

    (tip, ring and sleeve) or unbalanced (tip (chassis) ground to help prevent ground loops that can The Macro-Tech 2402 has a back panel Reset switch for and sleeve) input signals. Caution: The Channel 2 input result in unwanted hum and noise (see the Crown Ampli- each channel.

  • Page 13: Indicators

    The amber ODEP indicators confirm the nor- sync with the output audio signals. As IOC mal operation of Crown's patented Output (Input/Output Comparator) indicators, they Device Emulation Protection circuitry. During flash brightly if there is any difference between...

  • Page 14: Advanced Features And Options

    5.1.3 Transformer Thermal Protec- circuitry. tions. First, if dangerous subsonic frequencies tion To do this, Crown established a rigorous pro- or direct current (DC) is detected in the ampli- The Macro-Tech 2402 has transformer thermal gram to measure the safe operating area (SOA) fier's output, the unit will activate its DC/low- protection.

  • Page 15: Fuses And Circuit Breakers

    • Efficient heat sinks and a self-contained the amplifier to suit specific applications. forced-air cooling system dissipate heat The Macro-Tech 2402 does not blow its fuse or • Enhanced PIP2 (Programmable Input quickly and evenly for extra amplifier trip its breakers unless something is wrong. In Processor) connector accepts new protection and greater power output.

  • Page 16: Options

    Your amplifier is a PIP2 amplifier, which means it can take advantage of the many advanced fea- tures found in PIP2 modules, as well as all standard PIP modules. Visit the Crown website at www.crownaudio.com, or contact Crown Customer Service, for descriptions of available Figure 5.1 PIP2 Adapter Connection...

  • Page 17: Cooling Fan Options

    Insert the PIP and attached cables into the PIP cases can provide adequate cooling. Crown part C opening in the back of the amplifier, then screw 6593-5 is a reverse air-flow fan blade which securely into place.

  • Page 18: Troubleshooting

    This can greatly aid in determining the source of problems. Please contact your local Crown Normal operation for a channel with audio output. The ODEP indicator will remain at full intensity representative or our Technical Support...

  • Page 19: Theory Of Operation

    MA 2402 Power Amplifier 7 Theory of Operation A thermal switch embedded in each transformer 7.1 Overview The devices connected to the load are referred protects it from overheating. to as "high-side NPN and PNP" and the devices Your Macro-Tech amplifier incorporates several connected to ground are referred to as "low- advanced technological features including real- The low-voltage transformer output is rectified...

  • Page 20: Bridge-Mono Operation

    MA 2402 Power Amplifier 7 Theory of Operation output stage of Channel 2. The Channel 2 balanced The bridge-balanced circuit (U104-B) receives a To further protect the output stages, the patented nal applied to the Channel 1 input jack and the load signal from the output of the amplifier, and differ- ODEP circuitry is used.

  • Page 21: Specifications

    MA 2402 Power Amplifier 8 Specifications Minimum Guaranteed Power Macro-Tech 2402 120 VAC, 60 Hz Units, Stereo mode, per channel, both channels driven 1 kHz with 0.1% THD Stereo, 2 ohms per ch. 1,050 W Stereo, 4 ohms per ch.
  • Page 22 MA 2402 Power Amplifier 8 Specifications Performance (continued) Macro-Tech 2402 Load Impedance (Note: Safe with all types of loads) Stereo 2-8 ohms Bridge Mono 4-16 ohms Parallel Mono 1-4 ohms Voltage Gain (at maximum level setting, ± 6%) 0.775V sensitivity 38 dB ±...
  • Page 23 The average power during the burst is reported. This power level is a measurement of the amplifier’s maximum tran- sient power than can be perceived by the human ear. Figure 8.1 Macro-Tech 2402 Maximum Power Matrix Operation Manual page 23...
  • Page 24 Harmonic distortion is measured as the RMS sum total and given as a percentage of the fundamental output voltage. This applies for all wattages greater than Figure 8.2 Macro-Tech 2402 Minimum Power Matrix 0.25 watts. page 24 Operation Manual...

  • Page 25: Ac Power Draw And Thermal Dissipation

    This section provides detailed information about the amount of power Here are the equations used to calculate the data presented in Figure 9.1: and current drawn from the AC mains by the Macro-Tech 2402 amplifier and the amount of heat produced under various conditions. The calcula-...

  • Page 26: Thermal Dissipation

    MA 2402 Power Amplifier 9 AC Power Draw and Thermal Dissipation Figure 9.1 Macro-Tech 2402 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles page 26 Operation Manual...

  • Page 27: Service

    If you do not have access to the web, please responsibility for these items. 10.2.5 Estimate Approval form, in the back of this manual, when returning a Crown call Crown’s Customer Service at 574.294.8200 or 3. When shipping your Crown product, it is important product to the factory or authorized service center.

  • Page 28: Warranty

    States, will be borne by us. (You must bear the expense of shipping the product between any for- you are deprived of the use of the new Crown ITEMS EXCLUDED FROM THIS eign country and the port of entry in the United product.
  • Page 29 Crown Warranty. WARRANTY HOW TO OBTAIN WARRANTY SERVICE This Crown Warranty is in effect only for failure of You must notify your local Crown importer of DESIGN CHANGES a new Crown product which occurred within the...
  • Page 30 MA 2402 Power Amplifier NOTES page 30 Operation Manual...

  • Page 31: Product Registration Form

    MA 2402 Power Amplifier PRODUCT REGISTRATION Crown Audio, Inc. 1718 W. Mishawaka Rd. Elkhart, IN 46517-9439 Phone: 574-294-8000 Fax: 574-294-8329 www.crownaudio.com Online registration is also available at http://crownweb.crownintl.com/webregistration When this form is used to register your product, it may be mailed or faxed.
  • Page 32 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 33: Factory Service Information Form

    MA 2402 Power Amplifier Crown Factory Service Information Shipping Address: Crown Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517 PLEASE PRINT CLEARLY SRA #: __________________(If sending product to Crown factory service.) Model: _________________________________ Serial Number: _____________________ Purchase Date: ________________...
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