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Macro-Tech 02 Series
Macro-Tech
Operation Manual
602, 1202 & 2402
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, op
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MA Series Power Amplifiers Important Safety Instructions 1) Read these instructions. 15) WARNING: TO REDUCE THE RISK OF FIRE IMPORTANT 2) Keep these instructions. OR ELECTRIC SHOCK, DO NOT EXPOSE 3) Heed all warnings. THIS APPARATUS TO RAIN OR MOISTURE. MA Series amplifiers require Class 2 output wiring. 4) Follow all instructions. 16) DO NOT EXPOSE TO DRIPPING OR SPLASH- 5) Do not use this apparatus near water. ING. DO NOT PLACE OBJECTS FILLED WITH MAGNETIC FIELD 6) Clean only with a dry clot
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MA Series Power Amplifiers Crown International, Inc. TCF Technical Certificate No: P4300CRI1.IWS DECLARATION of CONFORMITY Technical Construction File Route FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield Issued By: Crown International, 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) Li
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MA Series Power Amplifiers 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 Series Power Amplifiers overheating and overload to keep the 1 Welcome 2 How to Use This *1 kHz **20 Hz–20 kHz amplifier working when others would fail. Power Power MA-602 2 ohm Dual (per ch.) 400W 335W Manual Congratulations on purchasing one of the � Complete protection against shorted, ® ® 4 ohm Dual (per ch.) 325W 300W renowned Crown Macro-Tech power ampli- open, and mismatched loads, overheating, This manual provides you with the necessary 8 ohm Dual (per ch.) 225W 210W fiers. They
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MA Series Power Amplifiers 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 wit
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MA Series Power Amplifiers 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
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MA Series Power Amplifiers 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-
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MA Series Power Amplifiers 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 common
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1.4 V 0.77 V 26 dB MA Series Power Amplifiers 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
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MA Series Power Amplifiers 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
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MA Series Power Amplifiers 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 appro
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MA Series Power Amplifiers 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 b
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MA Series Power Amplifiers 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, "standb
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MA Series Power Amplifiers 5 Advanced Features and Options 5.1.4 Fuses and Circuit Breakers Here are some of their many features: � Full protection against shorted outputs, mismatched loads, input/output DC, The power supplies of the Macro-Tech 602 and � Crown's Grounded Bridge design deliv- general overheating, high-frequency 1202 are protected by fuses. The power sup- ers large voltage swings without using overloads and internal faults. plies of the Macro-Tech 2402 are protected by eas
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MA Series Power Amplifiers 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 amplif
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MA Series Power Amplifiers 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
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MA Series Power Amplifiers 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 b
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MA Series Power Amplifiers 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 out
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MA Series Power Amplifiers 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. Th
