Crown Macro-Tech 602, Macro-Tech 1202 Reference Manual
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Crown Macro-Tech 602, Macro-Tech 1202 Reference Manual

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Models:
®
Macro-Tech
602, 1202 & 2402
Some models may be exported under the name Amcron .
®
© 2000 by Crown International, Inc., P.O. Box 1000, Elkhart, IN 46515-1000 U.S.A.
Telephone: 219-294-8000. Fax: 219-294-8329. Macro-Tech
®
amplifiers are produced by
the Professional Audio Unit of Crown International, Inc. Trademark Notice: PIP
, PIP2
,
™
™
SmartAmp
™
and Grounded Bridge
™
are trademarks and Amcron
®
, Crown
®
, Macro-
Tech
®
, IOC
®
, ODEP
®
, and IQ System
®
are registered trademarks of Crown International,
Inc. Other trademarks are the property of their respective owners.
127240-2
07/00

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Summary of Contents for Crown Macro-Tech 602, Macro-Tech 1202

  • Page 1 Macro-Tech 602, 1202 & 2402 Some models may be exported under the name Amcron . ® © 2000 by Crown International, Inc., P.O. Box 1000, Elkhart, IN 46515-1000 U.S.A. Telephone: 219-294-8000. Fax: 219-294-8329. Macro-Tech ® amplifiers are produced by the Professional Audio Unit of Crown International, Inc. Trademark Notice: PIP , PIP2 ™...
  • Page 2 ITEMS EXCLUDED FROM THIS CROWN WARRANTY Note: If your unit bears the name “Amcron,” please substitute it for the This Crown Warranty is in effect only for failure of a new Crown product which name “Crown” in this warranty. occurred within the Warranty Period. It does not cover any product which has...
  • Page 3 Nor does it cover every possible situation which may arise during installation, operation or mainte- nance. If your unit bears the name “Amcron,” please substitute it for the name “Crown” in this manual. If you need special assistance beyond the scope of this manual, please contact our Technical Support Group.
  • Page 4 Macro-Tech ® 602/1202/2402 Power Amplifiers Important Safety Instructions 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this apparatus near water. 6) Clean only with a dry cloth. 7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

  • Page 5: Table Of Contents

    Macro-Tech ® 602/1202/2402 Power Amplifiers CONTENTS 1 Welcome ................7 1.1 Unpacking ..............7 1.2 Features ............... 7 2 Controls, Indicators & Connectors ........9 3 Installation ............... 11 3.1 Mounting ..............11 3.2 Cooling ..............11 3.3 Wiring ................ 12 3.3.1 Stereo (Two-Channel) Operation ......
  • Page 6 Macro-Tech ® 602/1202/2402 Power Amplifiers ILLUSTRATIONS Macro-Tech Amplifier ..............7 Front Panel Controls & Indicators ..........9 Rear Panel Controls & Connectors .......... 10 Mounting Dimensions .............. 11 Top View of a Rack-Mounted Unit ..........11 Proper Air Flow in a Rack Cabinet ........... 11 Stereo Wiring ................

  • Page 7: Welcome

    Here are some of their many features: fiers have shut down. And with their PIP ™ expandability, ❏ Crown’s Grounded Bridge ™ design delivers large voltage Macro-Tech amplifiers can be easily customized with swings without using easily stressed output-transistor con- one of our many optional input modules (see Section 8 figurations like conventional amplifiers.
  • Page 8 Macro-Tech ® 602/1202/2402 Power Amplifiers ❏ Extra rugged, extruded aluminum front panel with ODEP switch and adjustable front-panel level controls. and signal presence/IOC indicators for each channel, ❏ Versatile 5-way binding posts make it easy to connect and an Enable indicator. output wiring.

  • Page 9: Controls, Indicators & Connectors

    (see Section 8.3). four seconds to protect your system from start-up tran- C. Signal/IOC Indicators sients. (This delay can be changed. Contact Crown’s Technical Support Group for details.) These green multifunction indicators show signal pres- ence and distortion for each channel. As signal pres- G.

  • Page 10: Rear Panel Controls & Connectors

    Macro-Tech ® 602/1202/2402 Power Amplifiers Fig. 2.2 Rear Panel Controls & Connectors (Note: Reset Switches (Item I) only available on the Macro-Tech 2402 model.) drive a single channel with an impedance less than 4 (tip and sleeve) input signals. Caution: The Channel 2 ohms.

  • Page 11: Installation

    Macro-Tech ® 602/1202/2402 Power Amplifiers 3 Installation 3.1 Mounting When mounting the amplifier in a rack, the side walls of Macro-Tech amplifiers are designed for standard the rack should be at least 2 inches (5 cm) away from 19-inch (48.3-cm) rack mounting and “stack” mounting the chassis as shown in Figure 3.2.

  • Page 12: Wiring

    The load you output wiring as shown in Figure 3.4. A pair of 5-way save may be your own! Crown assumes no liability for binding posts is provided for each channel to facilitate damaged loads resulting from careless amplifier use or easy connection of loudspeaker wires.

  • Page 13: Bridge-Mono Operation

    Macro-Tech ® 602/1202/2402 Power Amplifiers 3.3.2 Bridge-Mono Operation Bridge-Mono mode is intended for driving loads with a not defeated in Bridge-Mono mode. Any signal fed into total impedance of 4 ohms or more (If the load is less Channel 2 will work against and add to or distort the signal in Channel 1.

  • Page 14: Parallel-Mono Operation

    Macro-Tech ® 602/1202/2402 Power Amplifiers 3.3.3 Parallel-Mono Operation Parallel-Mono mode is intended for driving loads with a passed in this mode, so they should not be used. net impedance of less than 4 ohms. (See Bridge-Mono Note: It is normal for the IOC indicator of Channel 2 to if the load is 4 ohms or greater.) Installing the amp in remain lit in Parallel-Mono mode.

  • Page 15: Input Connection

    Macro-Tech ® 602/1202/2402 Power Amplifiers 3.3.4 Input Connection Both the balanced XLR and phone jack inputs have a nominal impedance of 20 k ohms (10 k ohms with un- balanced wiring) and will accept the line-level output of most devices. Female three-pin XLR input connectors -inch jacks are provided on the standard PIP2-FXQ input module (other PIP modules are de- scribed in Section 8.1).
  • Page 16 RF can be introduced into the signal by local up. Crown is not liable for damage incurred radio stations and from the bias signal of many tape when any transducer or component is recorders.

  • Page 17: Output Connection

    Consider the power-handling capacity of your load be- Cable Length = 10 ft.; answer: #8 wire fore connecting it to the amplifier. Crown is not liable for damage incurred at any time due to overpowering. Fus- ing loudspeaker lines is highly recommended (see Sec- tion 3.3.6).
  • Page 18 7. Install a low-pass filter on each input line (similar highest damping factor that can be achieved practically. to the RF filters described in Section 3.3.4). (Under these circumstances, Crown’s IQ System ® is often used so amplifiers can be monitored and controlled when 8.

  • Page 19: Additional Load Protection

    Macro-Tech ® 602/1202/2402 Power Amplifiers Another way to prevent the amplifier from prematurely Two different types of fuses are required for thermal pro- activating its protection systems and to protect induc- tection and voltage protection. Slow-blow fuses are usu- tive loads from large low-frequency currents is to con- ally selected to protect loudspeakers from thermal nect a 590 to 708 µF nonpolarized capacitor and 4-ohm, damage because they are similar to loudspeakers in...

  • Page 20: Operation

    “hold delay” keeps the indicators on long enough dates the warranty. to be easily noticed. The IOC function essentially pro- Remember: Crown is not liable for damage that results vides proof of distortion-free performance . Note: The from overdriving other system components.

  • Page 21: Macro-Tech Odep And Signal/Ioc Indicator States

    Please contact your lo- dicator states. The Enable indicator will be off with the cal Crown representative or our Technical Support first indicator state, “There is no power to the amplifier.” Group for futher assistance.

  • Page 22: Protection Systems

    The amplifier’s fault protection system will put an am- To do this, Crown established a rigorous program to plifier channel in standby mode in rare situations where measure the safe operating area (SOA) of each output heavy common-mode current is detected in the transistor before installing it in an amplifier.

  • Page 23: Fuses And Circuit Breakers

    Macro-Tech ® 602/1202/2402 Power Amplifiers cessively low impedance loads and unreasonably high beside the switch should glow. During the four input signals can generate more heat in the transformer second mute delay which immediately follows, the than in the output devices. These conditions can over- Signal/IOC indicators will flash unpredictably and heat the transformer and activate its protection system.

  • Page 24: Filter Cleaning

    Macro-Tech ® 602/1202/2402 Power Amplifiers 4.5 Filter Cleaning from the AC mains power receptacle. Dust filters are provided on the air intakes to the cooling 2. Remove the PIP module (two screws). system (see Figure 2.1). If these filters become clogged, 3.

  • Page 25: Technical Information

    Macro-Tech ® 602/1202/2402 Power Amplifiers 5 Technical Information The two channels may be used together to double the voltage (Bridge-Mono) or the current (Parallel-Mono) 5.1 Overview presented to the load. This feature gives you flexibility Your Macro-Tech amplifier incorporates several ad- to maximize the power available to the load.

  • Page 26: Circuit Block Diagram

    Macro-Tech ® 602/1202/2402 Power Amplifiers Fig. 5.1 Circuit Block Diagram Page 26 Reference Manual...

  • Page 27: Bridge-Mono Operation

    Macro-Tech ® 602/1202/2402 Power Amplifiers The balanced gain stage (U104-C and U104-D) causes Thermal sensor S100 gives the ODEP circuits vital infor- balanced to single-ended conversion using a difference mation on the operating temperature of the heat sink on amplifier. From there, gain can be controlled with a po- which the output devices are mounted.

  • Page 28: Specifications

    Macro-Tech ® 602/1202/2402 Power Amplifiers 6 Specifications The following applies to units in Stereo mode with 8-ohm loads and Bridge-Mono mode: an input sensitivity of 26 dB gain unless otherwise specified. 750 watts into 4 ohms. Standard 1 kHz Power: refers to maximum average power in watts 655 watts into 8 ohms.
  • Page 29 This function provides Turn On: Four-second delay with no dangerous tran- proof of distortion-free performance . In Parallel-Mono mode, sients. Contact Crown’s Technical Support Group to the Channel 2 light stays on (see Section 4.2). change the turn-on delay time.

  • Page 30: Macro-Tech 602 Minimum Power Matrix

    When measuring power, 0.1% THD appears to be the industry standard for distortion. Two of the maximum average power specifications shown in each minimum power matrix are measured at 0.1% THD so you can easily compare Crown specifica- tions to those of other manufacturers. But this high level of distortion actually allows for some clipping which is undesirable.

  • Page 31: Macro-Tech 1202 Minimum Power Matrix

    Macro-Tech ® 602/1202/2402 Power Amplifiers Fig. 6.2 Macro-Tech 1202 Minimum Power Matrix Fig. 6.3 Macro-Tech 2402 Minimum Power Matrix Reference Manual Page 31...

  • Page 32: Macro-Tech 602 Maximum Power Matrix

    Maximum Power Specifications Crown’s maximum power specifications represent the largest amount of output power you can expect from your amplifier when it is driven to full output under the given conditions. These specifications can be used to prevent loudspeaker and hearing damage.

  • Page 33: Macro-Tech 1202 Maximum Power Matrix

    Macro-Tech ® 602/1202/2402 Power Amplifiers Fig. 6.5 Macro-Tech 1202 Maximum Power Matrix Fig. 6.6 Macro-Tech 2402 Maximum Power Matrix Reference Manual Page 33...

  • Page 34: Typical Frequency Response

    Macro-Tech ® 602/1202/2402 Power Amplifiers –1 8 ohm 1 watt 4 ohm –2 2 ohm –3 –4 –5 –6 –7 10 K 100 K FREQUENCY (Hz) Fig. 6.7 Typical Frequency Response 1400 1200 1000 8 ohm 10 K 20 K FREQUENCY (Hz) Fig.

  • Page 35: Typical Crosstalk For The Macro-Tech 602

    Macro-Tech ® 602/1202/2402 Power Amplifiers ® Measurement +45˚ 0˚ –45˚ 10 K 20 K FREQUENCY (Hz) Fig. 6.10 Typical Phase Response ® Measurement –51 –57 –63 –69 –75 –81 10 K 20 K FREQUENCY (Hz) Fig. 6.11 Typical Crosstalk for the Macro-Tech 602 Reference Manual Page 35...

  • Page 36: Typical Crosstalk For The Macro-Tech 1202

    Macro-Tech ® 602/1202/2402 Power Amplifiers –66 ® Measurement –72 –78 –84 –90 –96 –102 10 K 20 K FREQUENCY (Hz) Fig. 6.12 Typical Crosstalk for the Macro-Tech 1202 –60 ® Measurement –66 –72 –78 –84 –90 –96 10 K 20 K FREQUENCY (Hz) Fig.

  • Page 37: Ac Power Draw & Thermal Dissipation

    Macro-Tech ® 602/1202/2402 Power Amplifiers 7 AC Power Draw and Thermal Dissipation Here are the equations used to calculate the data pre- This section provides detailed information about the sented in Figures 7.1 through 7.3: amount of power and current drawn from the AC mains by the Macro-Tech 602, 1202 and 2402 amplifiers and Total output power with all x Duty...

  • Page 38: Macro-Tech 1202 Power Draw, Current Draw And Thermal Dissipation At Various Duty Cycles

    Macro-Tech ® 602/1202/2402 Power Amplifiers Fig. 7.2 Macro-Tech 1202 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles Fig. 7.3 Macro-Tech 2402 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles Page 38 Reference Manual...

  • Page 39: Accessories

    IQ-P.I.P.-DSP is an IQ System Programmable Input Processor with DSP (Digital Signal Processing) for PIP- compatible amplifiers. As a component of the IQ System, it connects the amplifier to the Crown Bus so the amplifier 18 PIN (B) 20 PIN (A) can be controlled and monitored.
  • Page 40 O U T O U T IQ-PIP-USP2 is an IQ2 -series component. This means it supports Crown’s UCODE protocol and requires an IQ System with an IQ2-compatible IQ interface. UCODE (universal code) enables users and third parties to Programmable...

  • Page 41: Cooling Fan Options

    Two optional re- placement fan blades are available for special cooling requirements. Crown part C 6594-3 is a quieter, low-ve- locity fan blade that in many cases can provide ad- P.I.P.-FXT uses balanced 1:1 transformers to isolate the equate cooling.

  • Page 42: Service

    This method usually saves the most time and effort. Sim- ply present your bill of sale along with the defective unit If you have any questions, please call or write the Crown to an authorized service center to obtain service. They Technical Support Group.
  • Page 43 Crown Factory Service Information Shipping Address: Crown International, Inc., Factory Service, Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, IN 46517 Phone: 1-800-342-6939 or 1-219-294-8200 Fax: 1-219-294-8124 Owner’s Name: _________________________________________________________________________ Shipping Address: ______________________________________________________________________ Phone Number: _____________________________ Fax Number: _____________________________ Model: ________________________ Serial Number: ______________ Purchase Date: ___________ NATURE OF PROBLEM (Be sure to describe the conditions that existed when the problem occurred and what attempts were made to correct it.)

This manual is also suitable for:

Macro-tech 2402

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