Model: Macro-Tech 5002VZ 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: 219-2948000. Fax: 219-294-8329. Macro-Tech amplifiers are produced by the Professional Audio Unit of Crown International, Inc. Trademark Notice: PIP,™ SmartAmp™ and Grounded Bridge™ are trademarks and Amcron,® Crown,® Macro-Tech,® IOC,® ODEP®, IQ System® and P.I.P.® are registered trademarks of Crown International, Inc.
3 YEAR THREE YEAR FULL WARRANTY 3 YEAR WORLDWIDE NORTH AMERICA SUMMARY OF WARRANTY The Crown Audio Division of Crown International, Inc., 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A.
Macro-Tech 5002VZ Power Amplifier 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. 8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
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 maintenance. 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. Crown Audio Technical Support Group Plant 2 SW, 1718 W. Mishawaka Rd.
Macro-Tech 5002VZ Power Amplifier CONTENTS 1 Welcome ................................................................................. 8 1.1 Why So Much Power? ....................................................... 8 1.2 Unpacking ........................................................................ 8 1.3 Features ........................................................................... 9 2 Facilities ................................................................................ 10 3 Installation .
Macro-Tech 5002VZ Power Amplifier Contents continued... 9 Service .................................................................................. 43 9.1 Worldwide Service .......................................................... 43 9.2 North American Service .................................................. 43 9.2.1 Service at a North American Service Center ........ 43 9.2.2 Factory Service .................................................... 43 ILLUSTRATIONS 1.1 2.1 2.2 2.3 2.4 2.5 3.1 3.2 3.3 3.
Macro-Tech 5002VZ Power Amplifier Fig. 1.1 Macro-Tech 5002VZ Amplifier 1 Welcome Congratulations on your purchase of a Macro-Tech® 5002VZ.® You have selected one of the most reliable, powerful and cost-effective professional amplifiers ever made. From now on, you can enjoy the advantages of having the highest level of innovation available in any amplifier at any price. The Macro-Tech 5002VZ is the most advanced amplifier to offer Crown’s patented Variable Impedance (VZ) power supply technology.
Macro-Tech 5002VZ Power Amplifier 1.3 Features The Macro-Tech 5002VZ uses the very latest technology and miniaturized design to provide the highest power and value for its size, weight and price. Its patented Grounded Bridge™ circuitry offers many advantages over conventional designs. In Stereo mode, the amplifier’s separate high-voltage supplies and ultra-low crosstalk make it possible to treat each channel as an independent amplifier.
Macro-Tech 5002VZ Power Amplifier 2 Facilities Fig. 2.1 Front Facilities A. Dust Filters The dust filters remove large particles from air drawn in by the cooling fans. Check the filters regularly to prevent clogging (see Sections 3.2 and 4.5). B. Level Controls The output level for each channel is set with these convenient front panel level controls. Each control has 31 detents for precise adjustment (see Section 4.4). A security option is also available to prevent tampering (see Section 8.2). C.
Macro-Tech 5002VZ Power Amplifier Fig. 2.2 Front Facilities behind the Filter Grille mode for each power supply. The switches are located behind the top dust filter about 1.75 inches (4.5 cm) behind the front panel. Always turn off the power before changing either switch. To access the VZ mode switches, remove the top dust filter and reach upward through the grille opening with a long narrow nonconductive object like a plastic pen. The switches are easy to locate with the aid of a flashlight.
Macro-Tech 5002VZ Power Amplifier Fig. 2.3 Rear Facilities N. Output Connectors P. Balanced Phone Jack Inputs This high-current output block is provided for output connection. Its connectors accept banana plugs, spade lugs or bare wire. The detachable output cover (S) shown in Figure 2.5 is used to protect against accidental short circuits and dangerous electrical shock.
Macro-Tech 5002VZ Power Amplifier 3 Installation 3.1 Mounting The Macro-Tech 5002VZ is designed for standard 19 inch (48.3 cm) rack mounting and “stack” mounting without a cabinet. For optimum cooling and rack support, multiple units should be stacked directly on top of each other. Important: Always support the back of the unit. Provide extra support if the unit will be transported. Fig. 3.1 Mounting Dimensions 3.2 Cooling NEVER block the air vents in the front or back of the amplifier.
Macro-Tech 5002VZ Power Amplifier 3.3 Wiring The following instructions describe the most common ways to install your amplifier in a sound system. The input and output terminals are located on the back panel. Please use care when making connections, selecting signal sources and controlling the output level. The load you save may be your own! Crown assumes no liability for personal injury or damaged loads from careless amplifier use or deliberate overpowering.
Macro-Tech 5002VZ Power Amplifier Note: A method for paralleling multiple amplifiers for failsafe redundancy is available from Crown’s Technical Support Group. Note: The Channel 2 input jack and level control are disconnected in Bridge-Mono mode. A signal feeding Channel 2 will have no effect on the output. 3.3.2 Bridge-Mono Operation Bridge-Mono mode is intended for driving loads with a total impedance of 4 ohms or more (see Section 3.3.3 if the load is less than 4 ohms).
Macro-Tech 5002VZ Power Amplifier 3.3.3 Parallel-Mono Operation Parallel-Mono mode is intended for driving loads with a total impedance of less than 4 ohms (see Section 3.3.2 if the load is 4 ohms or greater). Installing the amplifier in Parallel-Mono mode is different from the other modes and requires special attention. CAUTION: Do NOT operate the amplifier in Stereo or Bridge-Mono mode until the Parallel-Mono jumper is removed. Failure to do so will result in high distortion and excessive heating.
Macro-Tech 5002VZ Power Amplifier 3.3.4 Input Connection Both the XLR and ¼-inch phone jack inputs are balanced. They have a minimum impedance of 10 K ohms (5 K ohms with unbalanced wiring) and will accept the line-level output of most devices. The XLR connectors and phone jacks are provided on the standard PIP2-FXQ input module (other PIP and PIP2 modules are described in Section 8.1).
Macro-Tech 5002VZ Power Amplifier SOLVING INPUT PROBLEMS Sometimes large infrasonic (subaudible) frequencies are present in the input signal. This can cause output clipping and off-center woofer cone movement. As a result, the loudspeakers may handle less power and could be damaged by overload or excess heat. To reduce the risk of such problems, turn on the Loudspeaker Offset Integration (LOI) for each channel. The LOI switches are located on the back panel of the amplifier.
Macro-Tech 5002VZ Power Amplifier .0002 .0002 Use Good Connectors RS Source Resistance (Ohms) .0004 .0006 1. To prevent possible short circuits, do not expose the loudspeaker cable connectors. .001 2. Do not use connectors that might accidentally tie two channels together when making or breaking connections (for example, a standard three-wire stereo phone plug). RL RS Damping Factor .002 20,000 .004 10,000 .006 .01 3.
Macro-Tech 5002VZ Power Amplifier 2. Lace together the loudspeaker conductors for each channel (do not lace together the conductors from different channels). This minimizes the chance that cables will act like antennas and transmit or receive high frequencies that can cause oscillation. 3. Avoid using shielded loudspeaker cable. There are basically two approaches that can be taken when installing fuses for loudspeaker protection. A common approach is to put a single fuse in series with 1.0 1.2 1.4 1.
Macro-Tech 5002VZ Power Amplifier the output of each channel. This makes installation convenient because there is only one fuse protecting the loads on each output. The main disadvantage of this approach becomes apparent if the fuse blows, because none of the loads will receive any power. A better approach is to fuse each driver independently. This allows you to apply the most appropriate protection for the type of driver being used.
Macro-Tech 5002VZ Power Amplifier 4 Operation 4.1 Precautions The Macro-Tech 5002VZ is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety: 4.2 Indicators The Macro-Tech 5002VZ has several internal indicators that can be used to help to identify a problem that causes a power supply to be put in “standby.” These indicators are described in Section 4.3.2. 1.
Macro-Tech 5002VZ Power Amplifier Fig. 4.
Macro-Tech 5002VZ Power Amplifier with a 0.1 second hold delay to show that an input signal is too large and must be compressed at the input. The indicators will also stay on brightly for a channel that is put in standby mode (see Section 4.3.2). Under abnormal operating conditions, a high-voltage power supply may be put in standby mode to prevent amplifier damage. If this happens, the channel’s Signal/IOC indicator will stay on with full brightness.
Macro-Tech 5002VZ Power Amplifier the standby mode. If the AC line voltage drops to about 20% or more below the unit’s rated voltage, both channels will go into standby to prevent loudspeaker damage that can result from brownouts and blackouts. If dangerous subsonic frequencies or direct current (DC) is detected in the amplifier’s output, the DC/lowfrequency protection circuitry will put the channel in standby to protect the loads and prevent oscillations.
Macro-Tech 5002VZ Power Amplifier The high-voltage power supplies are also protected by internal fuses. With rated loads and output levels, a fuse should only shut down its channel in the rare instance of a catastrophic amplifier failure. Other protection systems like ODEP keep the amplifier operational under most other severe conditions. A fuse can also shut down its channel if an extremely low-impedance load and high output level result in current draw that exceeds the fuse rating.
Macro-Tech 5002VZ Power Amplifier brightly, and the compressor to compress the input signal (if it is turned on). If an input signal has too much voltage, the input overload circuitry will light the IOC indicator brightly, and the compressor will compress the input signal regardless of the COMPRESSOR switch position. The OFF setting bypasses all drive sources for the compressors except for input overload.
Macro-Tech 5002VZ Power Amplifier 5 Technical Information 5.1 Overview Your Macro-Tech VZ amplifier incorporates several new technological advancements including low-stress output stages, real-time simulation of output transistor conditions, advanced thermal management, a modular system for signal input and processing, multispeed compressors, Loudspeaker Offset Integration, split feedback paths, modular internal construction and articulated VZ power supplies.
Macro-Tech 5002VZ Power Amplifier VZ POWER SUPPLY POWER TRANSISTOR pate. Also, the lower the resistance of the power transistors, the more voltage you can deliver to the load. But at the same time that you lower the resistance of the transistors, you increase the current passing through them, and again increase the amount of heat they must dissipate. + POWER SUPPLY SPEAKER LOAD – POWER TRANSISTOR Fig. 5.
Macro-Tech 5002VZ Power Amplifier Fig. 5.
Macro-Tech 5002VZ Power Amplifier also activated any time the first stage is about to be overdriven. The compressor control circuit also sends signals to the display module to indicate IOC or input overload. The variable gain stage (U100B) sets the input sensitivity. Switch S100 is used to select 26 dB gain, 1.4 volts or 0.775 volts sensitivity for standard 1 kHz power. From there, variable resistor (R120) controls the gain. The “error” amplifier (U105) is the heart of the unit.
Macro-Tech 5002VZ Power Amplifier The VZ mode switch (S700) has four positions which control how the articulated supply functions. (Two of the four switch positions are identical because there are only three VZ modes.) In the VZ position, the supply will automatically change as needed depending on the signal demands. In the Lock Low position, the supply stays in high-current mode and cannot switch into high-voltage mode.
Macro-Tech 5002VZ Power Amplifier Specifications Signal-to-Noise Ratio: A-weighted: Better than 105 dB below rated 1 kHz power. The following applies to 120 VAC, 60 Hz units in Stereo mode with 8-ohm loads and an input sensitivity of 26 dB gain unless otherwise specified. Specifications for units supplied outside the U.S.A. may vary slightly at different AC voltages and frequencies. Contact your Crown representative for full details). Total Harmonic Distortion (THD): 1 kHz rated power, 0.
Macro-Tech 5002VZ Power Amplifier Signal/IOC: Each channel has a green front panel indicator that flashes to show amplifier output. If a channel’s output waveform differs from its input by 0.05% or more, the indicator flashes brightly to show distortion. ODEP: Each channel has an amber front panel indicator that shows thermal-dynamic energy reserve. Normally, each ODEP indicator is lit to show available reserve energy. The indicator will dim proportionally as the energy reserve for its channel decreases.
Macro-Tech 5002VZ Power Amplifier 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 Guaranteed Power Specifications Crown’s minimum power specifications represent the absolute smallest amount of output power you can expect from your amplifier when it is driven to full output under the given conditions.
Macro-Tech 5002VZ Power Amplifier 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. The maximum power matrices include specifications for single cycle and 40 millisecond burst sine waves. Burst signals act like large transient peaks that are present in common source signals.
Macro-Tech 5002VZ Power Amplifier Fig. 6.3 Typical Frequency Response Fig. 6.4 Typical Damping Factor Fig. 6.
Macro-Tech 5002VZ Power Amplifier TEF Measurement +45˚ 0˚ –45˚ 100 TEF ® 1K 10 K 20 K FREQUENCY (Hz) Fig. 6.6 Typical Phase Response –60 TEF Measurement –66 –72 –78 dB –84 –90 –96 100 TEF ® 1K 10 K 20 K FREQUENCY (Hz) Fig. 6.
Macro-Tech 5002VZ Power Amplifier 7 AC Power Draw and Thermal Dissipation Here are the equations used to calculate the data presented in Figure 7.1: This section provides detailed information about the amount of power and current drawn from the AC power line by the Macro-Tech 5002VZ, and the amount of heat produced under various conditions. The calculations presented here are intended to provide a realistic and reliable depiction of the amplifier.
Macro-Tech 5002VZ Power Amplifier 8 Accessories 8.1 PIP and PIP2 Modules One advantage of Crown PIP2 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 PIP2-compatible amplifier. PIPs carrying the PIP2 logo have been configured with an extended, PIP2-enhanced feature set.
Macro-Tech 5002VZ Power Amplifier 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 develop custom software objects to control and monitor IQ2compatible components like the IQ-PIP-USP2. P.I.P.-AMCb combines many of the features found in the P.I.P.-XOV and P.I.P.
Macro-Tech 5002VZ Power Amplifier P.I.P.-PA permits the unique capability of adding one mic/ line input directly to each channel of an amplifier. With phantom power for microphones, this mic/line input may be remotely switched from mic to line priorities. “duck” level, 84 dB of attenuation. A 10-volt DC source for remote control capability is provided. The P.I.P.-EXT (Part M44731-4), available from service, allows the P.I.P.-RPA and other PIP cards to be “extended” outside the amplifier for easy set up.
Macro-Tech 5002VZ Power Amplifier 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 serviceable parts inside. Refer servicing to a qualified technician. Your repaired unit will be returned via UPS ground. Please contact us if other arrangements are required. Factory Service Shipping Instructions: 1.
Crown Factory Service Information Shipping Address: Crown International, Inc., Factory Service, Plant 2 SW, 1718 W. Mishawaka Rd.
