Crown MA-1202 Operation Manual
Macro-tech 02 series
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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.
©2005 by Crown Audio
Macro-Tech 02 Series
Some models may be exported under the name Amcron.
®
, Inc. 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
Macro-Tech
602, 1202 & 2402
®
127240-6B
6/05
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Table of Contents
Related Manuals for Crown MA-1202
Summary of Contents for Crown MA-1202
- Page 1 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.
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Page 2: Important Safety Instructions
Important Safety Instructions Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instruc- tions. -
Page 3: Declaration Of Conformity
MA Series Power Amplifiers Crown International, Inc. Issued By: Crown International, Inc. 1718 W. Mishawaka Road Elkhart, Indiana 46517 U.S.A. Competent Body’s Name and Address: Technology International (Europe) Limited 41-42 Shrivenham Hundred Business Park, Shrivenham, Swindon, Wilts, SN6 8TZ Equipment Type: Commercial Audio Power Amplifiers Family Name: Macro-Tech Series Model Names: Macro-Tech 602, Macro-Tech 1202, Macro-Tech 2402 EMC Standards:... -
Page 4: Table Of Contents
Table of Contents Important Safety Instructions ... 2 Declaration of Conformity ... 3 1 Welcome ... 5 1.1 Features ... 5 2 How to Use This Manual ... 5 3 Setup ... 6 3.1 Unpack Your Amplifier ... 6 3.2 Install Your Amplifier ... 6 3.3 Ensure Proper Cooling ... -
Page 5: Welcome
Macro-Tech amplifiers can be easily custom- ized with one of our many optional input mod- ules (see Section 5 for a list of available PIPs). 20 Hz–20 kHz 1 kHz MA-1202 Power Power Modern power amplifiers are sophisticated 675W 585W 2 ohm Dual (per ch.) -
Page 6: Setup
3 Setup 3.1 Unpack Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit. If damage is found, notify the transportation company immediately. Only you can initiate a claim for ship- ping damage. Crown will be happy to help as needed. -
Page 7: Choose Input Wire And Connectors
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. -
Page 8: Wire Your System
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. -
Page 9: Parallel-Mono Mode
MA Series Power Amplifiers 3 Setup Operation Manual 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. -
Page 10: Set Input Sensitivity
3 Setup 3.7 Set Input Sensitivity The input sensitivity switch inside the amplifier is set to 0.775 volt RMS at the factory. (Factory setting for international models is 1.4V). It can be changed to 1.4 volts or a voltage gain of 26 dB. The 26 dB gain setting is equivalent to a sensitivity of 2.2 volts for the Macro-Tech 602, 2.6 volts for the Macro- Tech 1202 and 3.1 volts for the Macro-Tech 2402. -
Page 11: Front Panel Controls And Indicators
MA Series Power Amplifiers 4 Operation 4.2 Front Panel Controls and Indicators The diagram below shows the controls and indicators on the front panel of the Macro-Tech 02 Series. A. Dust Filters The dust filters remove large particles from the air drawn in by the cooling fan. -
Page 12: Connectors
4 Operation 4.3 Back Panel Controls, Indicators and Connec- tors G. Power Cord The power cord has an appropriate plug for the required voltage. 120 VAC, 60 Hz North American Macro-Tech 602s and 1202s have 14 AWG line cords and NEMA 5- 15P plugs. -
Page 13: Indicators
MA Series Power Amplifiers 4 Operation 4.4 Indicators The amber Enable indicator is provided to show that the amplifier has been turned on (or enabled), and that its low-voltage power supply and forced-air cooling system are working. It does not indicate the status of the high-voltage power supplies. -
Page 14: Advanced Features And Options
5 Advanced Features and Options 5.1 Protection Systems Macro-Tech amplifiers provide extensive pro- tection and diagnostics capabilities. Protection systems include ODEP, "standby" mode, fuses (or breakers), and special thermal protection for the unit's transformers. 5.1.1 ODEP Crown invented ODEP to solve two long-stand- ing problems in amplifier design: to prevent amplifier shutdown during demanding opera- tion and to increase the efficiency of the output... -
Page 15: Fuses And Circuit Breakers
MA Series Power Amplifiers 5 Advanced Features and Options 5.1.4 Fuses and Circuit Breakers The power supplies of the Macro-Tech 602 and 1202 are protected by fuses. The power sup- plies of the Macro-Tech 2402 are protected by circuit breakers. With rated loads and output levels, the fuses (or circuit breakers) should only shut down the amplifier in the rare instance of a catastrophic failure. -
Page 16: Options
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. -
Page 17: Cooling Fan Options
MA Series Power Amplifiers 5 Advanced Features and Options For PIP2s featuring ribbon cable connectors, simply locate the two connectors on the under- side of the PIP circuit board, then connect the two input ribbon cables coming from the ampli- fier (see Figure 5.3). -
Page 18: Troubleshooting
6 Troubleshooting The table in Figure 6.1 shows the possible states for the ODEP and Signal/IOC indica- tors. It also describes the conditions that may be associated with the different indica- tor states. The Enable indicator will be off with the first indicator state, "There is no power to the amplifier."... -
Page 19: Theory Of Operation
MA Series Power Amplifiers 7 Theory of Operation 7.1 Overview Your Macro-Tech amplifier incorporates several advanced technological features including real- time computer simulation of output transistor stress, low-stress output stages, an advanced heat sink embodiment and the PIP2 (Program- mable Input Processor) expansion system. Custom circuitry is incorporated to limit tem- perature and current to safe levels, making it highly reliable and tolerant of faults. -
Page 20: Bridge-Mono Operation
7 Theory of Operation The bridge-balanced circuit (U104-B) receives a To further protect the output stages, the patented signal from the output of the amplifier, and differ- ODEP circuitry is used. It produces an analog out- ences it with the signal at the Vcc supply. The put proportional to the always-changing safe oper- ating area of the output transistor. -
Page 21: Specifications
MA Series Power Amplifiers 8 Specifications Minimum Guaranteed Power 120 VAC, 60 Hz Units, Stereo mode, per channel, both channels driven 1 kHz with 0.1% THD Stereo, 2 ohms per ch. Stereo, 4 ohms per ch. Stereo, 8 ohms per ch. 120 VAC, 60 Hz Units, Bridge mono mode 1 kHz with 0.1% THD 4 ohms... - Page 22 8 Specifications Performance (continued) Load Impedance (Note: Safe with all types of loads) Stereo Bridge Mono Parallel Mono Voltage Gain (at maximum level setting, ± 6%) 0.775V sensitivity 1.4V sensitivity 26 dB gain Required AC Mains Power Draw at Idle Ventilation Cooling Dimensions...
- Page 23 MA Series Power Amplifiers 8 Specifications Figure 8.1 Macro-Tech 602 Maximum Power Matrix Operation Manual Maximum Power Notes: All maximum power specifications are based on 0.1% regulated AC mains and an ambient room temperature of 70°F (21°C). International units with multi-tap transformers are specified for the best-case transformer tap (normally 240 VAC, 60 Hz).
- Page 24 MA Series Power Amplifiers 8 Specifications Maximum Power Notes: All maximum power specifications are based on 0.1% regulated AC mains and an ambient room temperature of 70°F (21°C). International units with multi-tap transformers are specified for the best-case transformer tap (normally 240 VAC, 60 Hz).
- Page 25 MA Series Power Amplifiers 8 Specifications Figure 8.3 Macro-Tech 2402 Maximum Power Matrix Operation Manual Maximum Power Notes: All maximum power specifications are based on 0.1% regulated AC mains and an ambient room temperature of 70°F (21°C). International units with multi-tap transformers are specified for the best-case transformer tap (normally 240 VAC, 60 Hz).
- Page 26 MA Series Power Amplifiers 8 Specifications Minimum Power Notes: All minimum power specifications are based on 0.1% regulated AC mains and an ambient room temperature of 70°F (21°C). International units with multi-tap transformers are specified for the worst-case transformer tap (normally 100 VAC, 50 Hz).
- Page 27 MA Series Power Amplifiers 8 Specifications Figure 8.5 Macro-Tech 1202 Minimum Power Matrix Operation Manual Minimum Power Notes: All minimum power specifications are based on 0.1% regulated AC mains and an ambient room temperature of 70°F (21°C). International units with multi-tap transformers are specified for the worst-case transformer tap (normally 100 VAC, 50 Hz).
- Page 28 MA Series Power Amplifiers 8 Specifications Minimum Power Notes: All minimum power specifications are based on 0.1% regulated AC mains and an ambient room temperature of 70°F (21°C). International units with multi-tap transformers are specified for the worst-case transformer tap (normally 100 VAC, 50 Hz).
- Page 29 MA Series Power Amplifiers 9 AC Power Draw andThermal Dissipation This section provides detailed information about the amount of power and current drawn from the AC mains by Macro-Tech 602, 1202 and 2402 amplifiers and the amount of heat produced under various condi- tions.
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Page 30: Ac Power Draw And Thermal Dissipation
9 AC Power Draw and Thermal Dissipation Figure 9.1 Macro-Tech 602 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles Figure 9.2 Macro-Tech 1202 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles Figure 9.3 Macro-Tech 2402 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles... -
Page 31: Service
10.2.5 Estimate Approval Approval of estimate must be given within 90 days after being notified by Crown Audio Inc. Units still in the pos- session of Crown after 90 days of the estimate will become the property of Crown Audio Inc. -
Page 32: Warranty
11 Warranty SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. war- rants to you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown product, for a period of three (3) years from the date of purchase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship. - Page 33 MA Series Power Amplifiers 11 Warranty of the reason for failure, except as excluded in this Warranty. 1 Note: If your unit bears the name “Amcron,” please substitute it for the name “Crown” in this warranty. ITEMS EXCLUDED FROM THIS CROWN- WARRANTY This Crown Warranty is in effect only for failure of a new Crown product which occurred within the...
- Page 34 MA Series Power Amplifiers NOTES page 34 Operation Manual...
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Page 35: Factory Service Information Form
Billing address of credit card: __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ Operation Manual Crown Audio Factory Service Information Shipping Address: Crown Audio Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517 PLEASE PRINT CLEARLY Model: ____________________________________________ PRODUCT RETURN INFORMATION Fax #: ________________________________________ State/Prov: ________________________________...