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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 infor
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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. 1) 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. 2) Keep these instructions. BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. Der MA-2402-Verstärker erfordert Klasse die 1 Prod
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MA 2402 Power Amplifier Crown Audio, Inc. TCF Technical Certificate No: P4300CRI1.IWS DECLARATION of CONFORMITY Technical Construction File Route FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield Issued By: Crown Audio, Inc. 574-294-8289 1718 W. Mishawaka Road swhitfield@crownintl.com Elkhart, Indiana 46517 U.S.A. Competent Body’s Name and Address: European Representative's Name and Address: Technology International (Europe) Limited David Budge
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MA 2402 Power Amplifier Table of Contents Important Safety Instructions .......................... 2 5.1.2 Standby Mode ..........................................14 Declaration of Conformity ................................ 3 5.1.3 Transformer Thermal Protection ...............14 1 Welcome ................................................... 5 5.1.4 Fuses and Circuit Breakers.......................15 1.1 Features ........................................
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MA 2402 Power Amplifier overheating and overload to keep the *1 kHz **20 Hz–20 kHz 1 Welcome 2 How to Use This Power Power amplifier working when others would fail. MA-2402 2 ohm Dual (per ch.) 1,050W 850W Manual Congratulations on purchasing the renowned � Complete protection against shorted, ® ® 4 ohm Dual (per ch.) 800W 750W Crown Macro-Tech 2402 power amplifier. It open, and mismatched loads, overheating, This manual provides you with the necessary 8 ohm Dual (per ch.) 520W 505W is desi
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MA 2402 Power Amplifier 3 Setup 3.1 Unpack Your Amplifier 3.2 Install Your Amplifier 3.3 Ensure Proper Cooling Please unpack and inspect your amplifier for any CAUTION: Before you begin, make sure your When using an equipment rack, mount units damage that may have occurred during transit. If amplifier is disconnected from the power directly on top of each other. Close any open spaces damage is found, notify the transportation company source, with power switch in the “off” posi- in rack with b
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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. Other PIP modules accept XLR, phone or Phoenix connectors, or bare wires. Regarding the PIP2-FXQ, Figure 3.3 shows con- nector pin assignments for balanced wiring, and Figure 3.4 sh
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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. Figure 3.6 Stereo Wiring INPUTS: Connect input wiring to both channels. OUTPUTS: Maintain proper polarity (+/-) on output connectors. Connect Channel 1 positive (+) speaker load to Channel 1 positive terminal of amp; repeat for nega- tiv
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MA 2402 Power Amplifier 3 Setup 3.6.3 Parallel-Mono Mode See Figure 3.8. Set the back panel stereo/mono switch to Parallel-Mono. INPUTS: Connect input wiring to Channel 1 only. OUTPUTS: Add a 14 gauge (or larger) jumper between the red(+) Channel 1 and Channel 2 binding posts. Connect the speaker positive (+) lead to the 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
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1.4 V 0.77 V 26 dB MA 2402 Power Amplifier 3 Setup 3.7 Set Input Sensitivity 3.8 Connect to AC Mains 4 Operation The input sensitivity switch inside the amplifier is Connect your amplifier's power cord to the AC set to 0.775 volt RMS at the factory. (Factory setting mains power source (power outlet). 4.1 Precautions for international models is 1.4V). It can be changed Your amplifier is protected from internal and exter- WARNING: The third prong of this connector to 1.4 volts or a voltage ga
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MA 2402 Power Amplifier 4 Operation ® 4.2 Front Panel Controls and C. Signal/IOC Indicators They dim proportionally as energy reserves Indicators decrease. In the rare event that energy reserves These green multifunction indicators show sig- are depleted, the indicators turn off and ODEP The diagram below shows the controls and nal presence and distortion for each channel. proportionally limits output drive so the ampli- indicators on the front panel of the Macro-Tech As signal presence in
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MA 2402 Power Amplifier 4 Operation 4.3 Back Panel Controls, Indicators and Connec- J. PIP Module L. Balanced XLR Inputs tors The standard PIP2-FXQ is included with your amplifier. It The factory-installed PIP2-FXQ provides a three-pin G. Power Cord provides female three-pin XLR input connectors. A vari- female XLR connector for balanced input to each chan- ety of other PIP modules can be used in place of the nel. The XLR inputs are connected in parallel with the The power cord has an appropri
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MA 2402 Power Amplifier 4 Operation 4.4 Indicators The ODEP indicator for the affected channel will Under conditions where one of the amplifier's turn off if a high-voltage power supply is put in high-voltage power supplies is temporarily put The amber Enable indicator is provided to "standby" mode, a high-voltage power supply in standby mode, the Signal/IOC indicators will show that the amplifier has been turned on (or fuse (or breaker) blows, or a transformer acti- stay on with full brig
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MA 2402 Power Amplifier 5 Advanced Features and Options 5.1 Protection Systems An IQ-PIP module may also temporarily place 5.1.2 Standby Mode Macro-Tech amplifiers provide extensive pro- the amplifier in standby mode, typically for An important part of a Macro-Tech amplifier's power conservation. The standby mode status tection and diagnostics capabilities. Protection protection systems is standby mode. Standby can be triggered manually. The auto standby systems include ODEP, "standby"
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MA 2402 Power Amplifier 5 Advanced Features and Options 5.1.4 Fuses and Circuit Breakers Here are some of its many features: � Full protection against shorted outputs, mismatched loads, input/output DC, The power supplies of the Macro-Tech 2402 are � Crown's Grounded Bridge design deliv- general overheating, high-frequency protected by circuit breakers. With rated loads ers large voltage swings without using overloads and internal faults. and output levels, the circuit breakers should e
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MA 2402 Power Amplifier 5 Advanced Features and Options 5.3 Options 5.3.1 PIP and PIP2 Modules Versatile PIP (Programmable Input Processor) modules provide flexible expansion features that can be added to customize the amplifier. PIP modules plug into the connector inside the back panel of the amplifier. PIP modules are available with a features ranging from error- driven compressor/limiters to remote control and monitoring via IQwic or System Architect. Your amplifier is a PIP2 amplifier
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MA 2402 Power Amplifier 5 Advanced Features and Options 5.3.2 Cooling Fan Options For PIP2s featuring ribbon cable connectors, simply locate the two connectors on the under- Every Macro-Tech amplifier has a built-in high- side of the PIP circuit board, then connect the velocity fan that provides optimum cooling. Two two input ribbon cables coming from the ampli- optional replacement fan blades are available for fier (see Figure 5.3). Both ribbon cables should special cooling requirements. C
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MA 2402 Power Amplifier 6 Troubleshooting Indicator Status Amplifier Condition The table in Figure 6.1 shows the possible states for the ODEP and Signal/IOC indica- There is no power to the amplifier and all indicators are off, including the Enable light. ODEP tors. It also describes the conditions that OFF Possible reasons: (1) The amplifier’s Enable switch is off. (2) The amplifier is not plugged into the power may be associated with the different indica- receptacle. (3) The AC circuit brea
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MA 2402 Power Amplifier 7 Theory of Operation 7.1 Overview The devices connected to the load are referred A thermal switch embedded in each transformer 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 side NPN and PNP." Positive current is deliv- time computer simulation of output
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MA 2402 Power Amplifier 7 Theory of Operation 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 output stage of Channel 2. The Channel 2 balanced input, error amp, translators and LVAs are discon- signal from the output of the amplifier, and differ- ODEP circuitry is used. It produces an analog out- connected across the red (+) back panel 5-way ences it with the signal at the Vcc supply. The p
