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Macro-Tech 3600VZ Reference Manual

Summary of 3600VZ

  • Page 1

    Model: macro-tech 3600vz some models may be exported under the name amcron. ® 125113-4 3/01 ©2001 by crown audio, inc., p.O. Box 1000, elkhart, in 46515-1000 u.S.A. Telephone: 219-294-8000. Fax: 219-294-8329. Trademark notice: smartamp, ™ pip, ™ and grounded bridge ™ are trademarks and amcron, ® cro...

  • Page 2: Three Year

    Worldwide summary of warranty the crown audio division of crown international, inc., 1718 west mishawaka road, elkhart, indiana 46517-4095 u.S.A. Warrants to you, the original purchaser and any subsequent owner of each new crown 1 product, for a period of three (3) years from the date of purchase by...

  • Page 3: Important

    The information furnished in 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 mainte- nance. If your unit bears the name “amcron,” please substitute it f...

  • Page 4

    Macro-tech 3600vz power amplifier page 4 reference manual 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 o...

  • Page 5: Contents

    Macro-tech 3600vz power amplifier page 5 reference manual contents 1 welcome ............................................................................ 7 1.1 unpacking ................................................................... 7 1.2 features ..................................................

  • Page 6: Illustrations

    Macro-tech 3600vz power amplifier page 6 reference manual illustrations 1.1 macro-tech 3600vz amplifier .................................................... 7 2.1 front facilities ........................................................................... 9 2.2 rear facilities .........................

  • Page 7: 1 Welcome

    Macro-tech 3600vz power amplifier page 7 reference manual fig. 1.1 macro-tech 3600vz amplifier 1 welcome congratulations on your purchase of the macro-tech ® 3600vz professional power amplifier. It is the first audio amplifier to offer crown’s patented variable impedance (vz ® ) power supplies. The ...

  • Page 8

    Macro-tech 3600vz power amplifier page 8 reference manual 1.2 features the macro-tech 3600vz amplifier uses the latest tech- nology and miniaturized design to deliver the highest power and value for its size, weight and price. Crown’s grounded bridge ™ output and patented odep protec- tion circuitry...

  • Page 9: 2 Facilities

    Macro-tech 3600vz power amplifier page 9 reference manual fig. 2.1 front facilities 2 facilities a. Dust filter the dust filters remove large particles from the air at the air intake. Check filters regularly to be sure they do not become clogged. The filter elements can be easily re- moved for clean...

  • Page 10

    Macro-tech 3600vz power amplifier page 10 reference manual fig. 2.2 rear facilities available to drive a single load with an impedance less than 4 ohms. Important: do not change this switch unless the amplifier is first turned off (see section 3.3). I. Reset buttons (push to reset) these reset butto...

  • Page 11: 3 Installation

    Macro-tech 3600vz power amplifier page 11 reference manual 3 installation 3.1 mounting macro-tech amplifiers are designed for standard 19 inch (48.3 cm) rack mounting and “stack” mounting without a cabinet. In a rack cabinet, it is best to mount them one on top of the other. This provides efficient ...

  • Page 12

    Macro-tech 3600vz power amplifier page 12 reference manual fig. 3.4 stereo wiring 3.3 wiring the following section describes common ways to in- stall your amplifier in a sound system. The input and output terminals are located on the rear panel. Please use care when making connections, selecting sig...

  • Page 13

    Macro-tech 3600vz power amplifier page 13 reference manual fig. 3.5 bridge-mono wiring 3.3.2 bridge-mono operation bridge-mono mode is intended for driving loads with a net impedance of 4 ohms or greater. (see parallel-mono if the load is less than 4 ohms.) installing the amplifier in bridge-mono mo...

  • Page 14

    Macro-tech 3600vz power amplifier page 14 reference manual fig. 3.6 parallel-mono wiring 3.3.3 parallel-mono operation parallel-mono mode is used to drive loads with a total impedance of less than 4 ohms. (see bridge-mono if the load is 4 ohms or greater.) installing the amplifier in parallel-mono m...

  • Page 15

    Macro-tech 3600vz power amplifier page 15 reference manual 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 xlr input connectors are pro- vided o...

  • Page 16

    Macro-tech 3600vz power amplifier page 16 reference manual solving input problems sometimes large subsonic (subaudible) frequencies are present in the input signal. These can damage loud- speakers by overloading or overheating them. To at- tenuate such frequencies, place a capacitor in series with t...

  • Page 17

    Macro-tech 3600vz power amplifier page 17 reference manual shielded pair cable is another effective way to reduce or eliminate hum resulting from inductive coupling. Ground loops often result when two or more devices are improperly grounded. This causes undesirable stray currents that may produce hu...

  • Page 18

    Macro-tech 3600vz power amplifier page 18 reference manual 2. Avoid using shielded loudspeaker cable. 3. Avoid long cable runs where the loudspeaker cables from different amplifiers share a common cable tray or cable jacket. 4. Never connect the amplifier’s input and output grounds together. 5. Neve...

  • Page 19

    Macro-tech 3600vz power amplifier page 19 reference manual 3.3.6 additional load protection because the amplifier generates enormous power, it may be desirable to protect loudspeakers (or other sen- sitive loads) from damage due to excessive power. A common way to do this is to put a fuse in series ...

  • Page 20: 4 Operation

    Macro-tech 3600vz power amplifier page 20 reference manual 4 operation 4.1 precautions although the macro-tech 3600vz is protected from ex- ternal faults, the following precautions should be fol- lowed for safety and optimum operation: 1. There are important differences among the ste- reo, bridge-mo...

  • Page 21

    Macro-tech 3600vz power amplifier page 21 reference manual fig. 4.2 macro-tech indicator states amplifier’s performance. As input overload indicators, they flash brightly with a 0.5 second hold delay when an input signal that is too large begins to cause early clipping distortion at the input. Note:...

  • Page 22

    Macro-tech 3600vz power amplifier page 22 reference manual its name describes what it does: output device emula- tion protection or odep. It not only simulates the opera- tion of the output transistors but it also compares their operation to their known soa. If odep sees that more power is about to ...

  • Page 23

    Macro-tech 3600vz power amplifier page 23 reference manual fig. 4.3 input sensitivity and ground lift switches tions where extremely low-impedance loads and sus- tained high output levels result in current draw that ex- ceeds the breaker’s rating. Again, this should only be possible when operating o...

  • Page 24

    Macro-tech 3600vz power amplifier page 24 reference manual the circuit breaker reset buttons (push to reset) are located on the back panel to protect the power sup- plies against overload. If a circuit breaker trips, the sig- nal/ioc indicator of the affected channel turns on (the enable indicator r...

  • Page 25: 5 Technical Information

    Macro-tech 3600vz power amplifier page 25 reference manual 5 technical information 5.1 overview your macro-tech vz amplifier incorporates several new technological advancements including low-stress out- put stages, real-time computer simulation of output tran- sistor conditions, advanced thermal man...

  • Page 26

    Macro-tech 3600vz power amplifier page 26 reference manual fig. 5.1 a typical power supply voltage require- ments are not high, it operates in a parallel mode to pro- duce less volt- age and more current. The power tran- sistors stay cooler and are not forced to needlessly dissi- pate heat. This is ...

  • Page 27

    Macro-tech 3600vz power amplifier page 27 reference manual fig. 5.5 circuit block diagram.

  • Page 28

    Macro-tech 3600vz power amplifier page 28 reference manual the input signal at the phone jack passes directly into the balanced gain stage (u104-c,d). Use of a pip mod- ule for input signal causes the input signal to pass through the pip and then to the balanced gain stage. The balanced gain stage (...

  • Page 29: 6 Specifications

    Macro-tech 3600vz power amplifier page 29 reference manual 6 specifications these specifications apply to 120 vac units in stereo mode with 8 ohm loads and an input sensitivity of 26 db unless otherwise specified. 120 vac, 60 hz units: these units are equipped with trans- formers rated for 120 vac, ...

  • Page 30

    Macro-tech 3600vz power amplifier page 30 reference manual controls enable: a front panel push button used to turn the am- plifier on and off. Level: a 31-position detented rotary attenuator for each channel located on the front panel used to control the output level. Stereo/mono: a three-position b...

  • Page 31

    Macro-tech 3600vz power amplifier page 31 reference manual construction durable black powder coated steel chassis and alumi- num front panel with lexan overlay; specially designed “flow-through” ventilation from front to side panels. Cooling: forced-air with custom heat diffusers and pat- ented circ...

  • Page 32

    Macro-tech 3600vz power amplifier page 32 reference manual crown specifications are guaranteed for three years. In an effort to provide you with as much information as possible about the high power-producing capabilities of your amplifier, we have created the following power matrices. Minimum guaran...

  • Page 33

    Macro-tech 3600vz power amplifier page 33 reference manual 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 t...

  • Page 34

    Macro-tech 3600vz power amplifier page 34 reference manual fig. 6.3 typical frequency response fig. 6.4 typical damping factor fig. 6.5 typical output impedance 10 100 1 k 10 k 100 k frequency (hz) +2 +1 0 –1 –2 –3 –4 db –5 –6 –7 4 ohm 8 ohm 1 watt 504.0 126.8 31.8 milliohms 8.0 2.0 6 db 20 100 1 k ...

  • Page 35

    Macro-tech 3600vz power amplifier page 35 reference manual fig. 6.7 typical crosstalk fig. 6.6 typical phase response tef ® +45˚ 0˚ –45˚ 100 1 k 10 k 20 k frequency (hz) 100 1 k 10 k 20 k frequency (hz) db tef ® –60 –66 –72 –78 –84 –96 –90 tef ® measurement tef ® measurement.

  • Page 36: 7 Ac Power Draw and

    Macro-tech 3600vz power amplifier page 36 reference manual 7 ac power draw and thermal dissipation this section provides detailed information about the amount of power and current drawn from the ac mains by the macro-tech 3600vz, and the amount of heat pro- duced under various conditions. The calcul...

  • Page 37: 8 Accessories

    Macro-tech 3600vz power amplifier page 37 reference manual 8 accessories 8.1 pip modules one advantage of crown pip compatible amplifiers is the ability to customize them using pip (programmable input processor) and pip2 modules. The pips shown here may be used in any crown pip-compatible amplifier....

  • Page 38

    Macro-tech 3600vz power amplifier page 38 reference manual p.I.P.-beqc adds many features of the bose ® controllers to the input of your amplifier. Each channel includes a cus- tom equalization network for bose loudspeakers. Also in- cluded is a bass-cut (high-pass) filter for each channel. The equa...

  • Page 39

    Macro-tech 3600vz power amplifier page 39 reference manual 8.2 level control shaft lock a security accessory, the shaft lock can be used to se- cure your amplifier’s level controls in situations where the front panel controls are subject to tampering. One is needed for each channel.They can be order...

  • Page 40: 9 Service

    Macro-tech 3600vz power amplifier page 40 reference manual 9 service this unit has very sophisticated circuitry which should only be serviced by a fully trained technician. This is one reason why each unit bears the following label: caution: to prevent electric shock, do not remove covers. No user s...

  • Page 41

    Macro-tech 3600vz power amplifier page 41 reference manual detach and send with unit. Crown factory service information shipping address: crown 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: ____________...