128313-4C_8-03_MA5002VZ operation.fm
Macro-Tech Series
Operation Manual
MA-5002VZ
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.
Note: 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: Grounded Bridge, PIP and PIP2 are trademarks, and Amcron, Crown, IOC, VZ, and ODEP are registered trademarks of Crown International. Other trademarks are the property of their respective owners.
Some models may be exported under the name Amcron.®
©2003 by Crown Audio, Inc. P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 574-294-8000
128313-4C
8/03
MA-5002VZ Power Amplifier
Important Safety
Instructions
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page 2
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 instructions.
Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus that produce heat.
Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other.
A grounding-type plug has two blades and a
third grounding prong. The wide blade or the
third prong is provided for your safety. If the
provided plug does not fit into your outlet,
consult an electrician for replacement of the
obsolete outlet.
Protect the power cord from being walked on
or pinched, particularly at plugs, convenience
receptacles, and the point where they exit from
the apparatus.
Only use attachments/accessories specified
by the manufacturer.
Use only with a cart, stand, bracket, or table
specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution
when moving the cart/apparatus combination
to avoid injury from tip-over.
Unplug this apparatus during lightning storms
or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in any way, such as powersupply cord or plug is damaged, liquid has
been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally,
or has been dropped.
To reduce the risk of fire or electric shock, do
not expose this apparatus to rain or moisture.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE
TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ
PAS LES COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE À L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR PERSONNEL
QUALIFIÉ SEULMENT.
IMPORTANT
MA Series amplifiers require Class 2 output wiring.
MAGNETIC FIELD
CAUTION! Do not locate sensitive high-gain equipment such as preamplifiers or tape decks directly
above or below the unit. Because this amplifier has
a high power density, it has a strong magnetic field
which can induce hum into unshielded devices that
are located nearby. The field is strongest just above
and below the unit.
If an equipment rack is used, we recommend locating the amplifier(s) in the bottom of the rack and the
preamplifier or other sensitive equipment at the top.
WATCH FOR THESE SYMBOLS:
The lightning bolt triangle is used to alert the user
to the risk of electric shock.
The exclamation point triangle is used to alert the
user to important operating or maintenance instructions.
FCC COMPLIANCE NOTICE
This device complies with part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
CAUTION: Changes or modifications not expressly approved by the party responsible for
complicance could void the user’s authority to operate the euqipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Operation Manual
MA-5002VZ Power Amplifier
Crown International, Inc.
DECLARATION of CONFORMITY
TCF Technical Certificate No: C1017CRI.ABS
Technical Construction File Route
Issued By:
Sue Whitfield
574-294-8289
swhitfield@crownintl.com
Crown International, Inc.
1718 W. Mishawaka Road
Elkhart, Indiana 46517 U.S.A.
European Representative's Name and Address:
Nick Owen
19 Clos Nant Coslech
Pontprennau
Cardiff
CF23 8ND United Kingdom
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 5002VZ
Model Names: MA5002VZE10CE MA5002VZE17CE
MA5002VZE14CE
EMC Standards:
EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1995 Magnetic Field Emissions-Annex A @ 10 cm and 1 M
EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current ≤16A per phase)
EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current ≤16A
EN 55022:1992 + A1: 1995 & A2:1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B
EN 55103-2:1996 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:1995 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:1996 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A)
EN 61000-4-4:1995 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:1995 Surge Immunity (Criteria B)
EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:1994 Voltage Dips, Short Interruptions and Voltage Variation
Safety Standard:
EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus
I certify that the product identified above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.
Signed
Larry Coburn
Title: Senior Vice President of Manufacturing
Operation Manual
Date of Issue: March 28, 2000
page 3
MA-5002VZ Power Amplifier
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 ............................................................... 6
3.4 Choose Input Wire and Connectors ............................................ 7
3.5 Choose Output Wire and Connectors .......................................... 8
3.6 Wire Your System ....................................................................... 9
3.6.1 Stereo Mode ...................................................................... 9
3.6.2 Bridge-Mono Mode ........................................................... 9
3.6.3 Parallel-Mono Mode .......................................................... 10
3.7 Connect to AC Mains .................................................................. 11
3.8 Startup Procedure ....................................................................... 11
4 Operation ............................................................11
4.1 Precautions ................................................................................. 11
4.2 Front Panel Controls and Indicators .......................................... 12
4.3 Back Panel Controls and Connectors .......................................... 13
page 4
5 Advanced Features and Options .............................15
5.1 Protection Systems ...............................................................15
5.1.2 Output Device Emulation Protection (ODEP) ...............15
5.1.3 IOC (Input Output Comparator)....................................15
5.2 Circuit Designs ....................................................................15
5.2.1 Grounded Bridge .........................................................15
5.2.2 Variable Impedance (VZ) .............................................15
5.2.3 ILoad/ILimit ................................................................16
5.2.4 Loudspeaker Offset Integration ....................................16
5.3 Options ................................................................................16
5.3.1 PIP Modules ...............................................................16
6 Troubleshooting ................................................17
7 Specifications...................................................18
8 Service...........................................................22
8.1 Worldwide Service ...............................................................22
8.2 US and Canada Service ........................................................22
8.2.1 Service at a US or Canada Service Center ...................22
8.2.2 Factory Service ...........................................................22
8.2.3 Factory Service Shipping Instructions..........................22
9 Warranty ........................................................23
Factory Service Information Form .....................................................25
Operation Manual
MA-5002VZ Power Amplifier
MA-5002VZ
*1 kHz **20 Hz–20 kHz
Power
Power
2 ohm Dual (per ch.) 2,500W
2,155W
4 ohm Dual (per ch.) 2,000W
1,775W
8 ohm Dual (per ch.) 1,300W
1,090W
4 ohm Bridge-Mono
5,000W
8 ohm Bridge-Mono
4,000W 3,670W
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% THD.
**20 Hz–20 kHz Power: refers to maximum average power
in watts from 20 Hz to 20 kHz with 0.1% THD.
1 Welcome
The Crown® Macro-Tech ® 5002VZ is the
most advanced amplifier to offer Crown’s patented Variable Impedance (VZ®) power supply
technology. New semiconductor technology is
combined with superior VZ power supplies to
enable the Macro-Tech 5002VZ to pack unprecedented power levels into 5¼ inches (13.3 cm)
of vertical rack space. The Macro-Tech 5002VZ
also features enhanced PIP2™ compatibility for
access to custom input modules, and because
it’s a Macro-Tech, you have the added benefit of
ODEP® protection to keep the show going long
after other amplifiers would fail.
Modern power amplifiers are sophisticated
pieces of engineering capable of producing
extremely high power levels. They must be
treated with respect and correctly installed if
they are to provide the many years of reliable
service for which they were designed.
1.1 Features
• Grounded Bridge™ design delivers large
voltage swings without stressing outputtransistors, resulting in lower distortion
and superior reliability.
•
Patented ODEP (Output Device Emulation
Protection) circuitry compensates for
overheating and overload to keep the
amplifier working when others would fail.
•
IOC® (Input/Output Comparator) circuitry
immediately alerts of any distortion
exceeding 0.05%, providing dynamic
proof of distortion-free performance.
•
Articulated VZ power supplies for each
channel provide excellent crosstalk characteristics and the best power matching to
your load.
2 How to Use This
Manual
This manual provides you with the necessary
information to safely and correctly setup and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For additional information, please consult Crown’s
Amplifier Application Guide (available online at
www.crownaudio.com), Crown Technical Support, your system installer or retailer.
We strongly recommend you read all instructions, warnings and cautions contained in this
manual. Also, for your protection, please send
in your warranty registration card today. And
save your bill of sale—it’s your official proof of
purchase.
In addition, the MA-5002VZ amplifier includes
a number of features which require some explanation before they can be used to their maximum advantage.
Please take the time to study this manual so
that you can obtain the best possible service
from your amplifier.
Operation Manual
page 5
MA-5002VZ Power Amplifier
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 shipping damage. Crown will
be happy to help as needed. Save the shipping
carton as evidence of damage for the shipper’s
inspection.
We also recommend that you save all packing
materials so you will have them if you ever
need to transport the unit. Never ship the
unit without the factory pack.
YOU WILL NEED (not supplied):
•
Input wiring cables
•
Output wiring cables
3.2 Install Your Amplifier
CAUTION: Before you begin, make sure
your amplifier is disconnected from the
power source, with power switch in the
“off” position and all level controls
turned completely down (counterclockwise).
Use a standard 19-inch (48.3 cm) equipment
rack. See Figure 3.1 for amplifier dimensions.
You may also stack amps without using a cabinet.
3.3 Ensure Proper Cooling
When using an equipment rack, mount units
directly on top of each other. Close any open
spaces in rack with blank panels. DO NOT
block front or rear air vents. The side walls of
the rack should be a minimum of two inches
(5.1 cm) away from the amplifier sides, and the
back of the rack should be a minimum of four
inches (10.2 cm) from the amplifier back panel.
Figure 3.2 illustrates standard amplifier airflow.
NOTE: When transporting, amplifiers
should be supported at both front and
back.
Rack for mounting amplifier (or a stable surface
for stacking)
WARNING: Before you start to set up
your amplifier, make sure you read and
observe the Important Safety Instructions found at the beginning of this
manual.
Figure 3.2 Airflow
page 6
Figure 3.1
Dimensions
Operation Manual
MA-5002VZ Power Amplifier
3 Setup
3.4 Choose Input Wire
and Connectors
Refer to Figure 3.3 for correct connector pin
assignments for balanced wiring, and Figure 3.4
for correct connector pin assignments for unbalanced wiring.
Balanced Line
Unbalanced Line
NOTE: Custom wiring should only be
performed by qualified personnel.
Figure 3.3 Balanced Input
Connector Wiring
Operation Manual
Figure 3.4 Unbalanced Input
Connector Wiring
page 7
MA-5002VZ Power Amplifier
3 Setup
3.5 Choose Output Wire and Connectors
Crown recommends using pre-built or professionally wired, high-quality, two-conductor,
heavy gauge speaker wire and connectors. You
may use banana connectors, terminal forks or
bare wire for your output connectors (see Figure
3.5). To prevent the possibility of short-circuits,
wrap or otherwise insulate exposed loudspeaker
cable connectors.
Using the guidelines below, select the appropriate size of wire based on the distance from
amplifier to speaker.
Distance
Wire Size
up to 40 ft.
14 gauge
41-60 ft.
12 gauge
61-100 ft.
10 gauge
101-150 ft.
8 gauge
151-250 ft.
6 gauge
Figure 3.5 Output Connector Wiring
CAUTION: Never use shielded cable for
output wiring.
page 8
Operation Manual
MA-5002VZ Power Amplifier
3 Setup
3.6 Wire Your System
3.6.1 Stereo Mode
Typical input and output wiring is shown in
Figure 3.6.
INPUTS: Connect input wiring for each channel.
Refer to Section 3.4 for input connector pin
assignments.
OUTPUTS: Maintain proper polarity (+/-) on
output connectors.
Connect positive (+) speaker lead to Channel 1
positive output of amp; connect negative (-).
speaker lead to Channel 1 negative output of
amp. Repeat for Channel 2. Refer to Section 3.5
for output connector pin assignments. Make
sure the Mode switch is set to the “Stereo” position when operating in Stereo mode.
Figure 3.6 System Wiring, Stereo Mode
3.6.2 Bridge-Mono Mode
Typical input and output wiring is shown in
Figure 3.7.
INPUTS: Connect input wiring to Channel 1.
Refer to Section 3.4 for input connector pin
assignments.
OUTPUTS: Connect positive (+) speaker lead to
Channel 1 positive output of amp; connect negative (-) speaker lead to Channel 2 positive output
of amp. Do not use the negative outputs when
operating in Bridge-Mono mode. Refer to
Section 3.5 for output connector pin assignments. Make sure the Mode switch is set to the
“Bridge” position when operating in BridgeMono mode.
NOTE: Turn down (full CCW) the Channel
2 level control when operating in BridgeMono mode, as the lower-numbered
level control works both channels.
Figure 3.7 System Wiring, Bridge-Mono Mode
Operation Manual
page 9
MA-5002VZ Power Amplifier
3 Setup
3.6.3 Parallel-Mono Mode
Typical input and output wiring is shown in
Figure 3.8.
INPUTS: Connect input wiring to Channel 1.
Refer to Figure 3.4 for input connector pin
assignments.
OUTPUTS: Install a jumper wire between the
positive outputs of both Channel 1 and Channel
2 that is at least 14 gauge in size; Connect positive (+) speaker lead to Channel 1 positive
output of amp; connect negative (-) speaker lead
to Channel 2 negative output of amp. Refer to
Section 3.5 for output connector pin assignments. Make sure the Mode switch is set to the
“Parallel” position when operating in ParallelMono mode.
NOTE: Turn down (full CCW) the Channel
2 level control when operating in
Parallel-Mono mode, as the lowernumbered level control works both
channels.
NOTE: Remove the jumper wire before
changing to any mode except ParallelMono.
NOTE: Crown provides a reference of wiring pin
assignments for commonly used connector
types in the Crown Amplifier Application Guide
available at www.crownaudio.com.
Figure 3.8 System Wiring, Parallel-Mono Mode
page 10
Operation Manual
MA-5002VZ Power Amplifier
3 Setup
4 Operation
3.7 Connect to AC Mains
Connect the AC power cordset of your amplifier
to the AC mains power source (power outlet).
NOTE: The plug supplied with 120V versions of
the MA5000VZ is a 120V, 30-ampere plug
(Figure 3.9).
3.8 Startup Procedure
Use the following procedure when first turning on your
amplifier:
1. Turn down the level of your audio source.
2. Turn down the level controls of the amplifier.
3. Turn on the “Enable” switch. The Enable indicator
should glow.
4. Turn up the level of your audio source to an optimum level.
5. Turn up the Level controls on the amplifier until
the desired loudness or power level is achieved.
6. Turn down the level of your audio source to its
normal range.
Figure 3.9 120V, 30A Power Plug
Supplied with 120V Versions of the
MA5002VZ
NOTE: The third prong of this connector
(ground) is an important safety feature.
Do not attempt to disable this ground
connection by using an adapter or other
methods.
Amplifiers don’t create energy. The AC mains
voltage and current must be sufficient to deliver
the power you expect. You must operate your
amplifier from an AC mains power source with
not more than 10% variation above or below the
amplifier’s specified line voltage and within the
specfied frequency requirements (indicated on
the amplifier’s back panel label). If you are
unsure of the output voltage of your AC mains,
please consult your electrician.
If you ever need to make any wiring or installation changes, don’t forget to turn off the
amplifier and disconnect the power cord.
For help with determining your system’s optimum gain structure (signal levels) please
refer to the Crown Amplifier Application
Guide, available online at
www.crownaudio.com.
4.1 Precautions
Your Macro-Tech Series amplifier is protected
from internal and external faults, but you should
still take the following precautions for optimum
performance and safety:
1.
Before use, your amplifier first must be configured for proper operation, including input
and output wiring hookup. Improper wiring
can result in serious operating difficulties.
For information on wiring and configuration, please consult the Setup section of this
manual or, for advanced setup techniques,
consult Crown’s Amplifier Application
Guide available online at www.crownaudio.com.
2. Use care when making connections, selecting signal sources and controlling the output level. The load you save may be your
own!
3. Do not short the ground lead of an output
cable to the input signal ground. This may
form a ground loop and cause oscillations.
4. Never connect the output to a power
supply, battery or power main. Electrical shock may result.
5. Tampering with the circuitry, or making
unauthorized circuit changes, may be hazardous and invalidates all agency listings.
6. Do not operate the amplifier with the Signal/
IOC LEDs constantly flashing.
7. Do not overdrive the mixer, which will cause
a clipped signal to be sent to the amplifier.
Such signals will be reproduced with
extreme accuracy, and loudspeaker damage
may result.
8. Never operate the amplifier with less than
the rated load impedance. Due to the amplifier’s output protection, such a configuration
may result in premature clipping and
speaker damage.
Remember: Crown is not liable for damage that
results from overdriving other system components
Operation Manual
page 11
MA-5002VZ Power Amplifier
4 Operation
4.2 Front Panel Controls
and Indicators
A. Dust Filter
Removes large particles from the air at the
air intake. The filter elements can be easily
removed for cleaning by gently pulling
them away from the front panel. Filters can
be cleaned by soaking in a mild detergent
and water.
B. Level Control
Rotary detented level control, one per
channel.
C. ILoad/ILimit Indicator
Dual-color LED, one per channel. Indicator
is off when there is no significant load current (extremely low or no input signal, or
no load connected to the channel's output); illuminates green to indicate that load
current is flowing; and illuminates red if
the amplifier has reached its maximum
output current capacity. See Section 5.2.3
for more about ILoad/ILimit.
D. Signal/IOC Indicator
Green LED, one per channel. Dual-purpose indicator illuminates to indicate the
presence of input signals; flashes brightly
with a 0.1-second hold delay to indicate a
difference (distortion) between the input
and output signal of 0.05% or greater; and
flashes brightly with a 0.5-second hold
delay to indicate input clipping distortion.
See Section 5.1.2 for more about IOC.
E. ODEP Indicator
Amber LED, one per channel, illuminates
brightly to indicate presence of thermodynamic energy. They dim proportionally as
energy reserves decrease. In the event that
energy reserves are depleted, the indicators turn off and ODEP limiting occurs.
See Section 5.1.1 for more about ODEP.
F. Enable Indicator
Green LED indicates amplifier has been
turned on and AC power is available.
G. Enable Switch
Amplifier is on when the switch is in the IN
position.
H. VZ Mode Switch
Four-position switch, one Per Channel.
Allows selection of “VZ-ODEP,” “Lock
Low,” and “VZ” power supply modes, from
left to right (right-most two positions both
select VZ mode). See Section 5.2.2 for
more about VZ and the VZ Mode Switch.
Figure 4.1 Front Panel
Controls and Indicators
(shown with top filter grille
removed for clarity)
page 12
Operation Manual
MA-5002VZ Power Amplifier
4 Operation
4.3 Back Panel Controls
and Connectors
I.
Stereo/Mono Switch
Allows selection of Stereo, Bridge-Mono,
or Parallel-Mono operation.
J. Compressor Switch
Controls the channel's error-driven compressor. Selections include Off; Fast (4millisecond attack, 300-millisecond
release); and Slow (12-millisecond attack,
600-millisecond release).
K. Loudspeaker Offset Integration
Switch
Allows the Loudspeaker Offset Integration
(LOI) circuit to be enabled or disabled. See
Section 5.2.4 for more info about LOI.
L. Sensitivity Switch
Three-position switch. Allows the selection of 26 dB; 1.4V; or 0.775V input
sensitivity.
M. Power Cord
protects against accidental short circuits
and dangerous electrical shock.
DANGER: The outputs can produce
lethal energy levels! Do not change
the output wiring unless the amplifier has been off for at least 10 seconds.
Note: Some international models include
high-current binding posts rather than the
output block. Figure 4.4 shows the international binding posts.
N. Output Connectors
High-current output block accepts banana
plugs, spade lugs or bare wire. A detatchable output cover, shown in Figure 4.3,
Figure 4.2 Back Panel
Controls and Connectors
Operation Manual
page 13
MA-5002VZ Power Amplifier
4 Operation
O. PIP2 Module
Standard module (PIP2-FXQ) provides a
3-pin female XLR connector and a female
TRS jack for signal input to each channel.
Q. XLR Inputs (Standard PIP2
Module
One per channel, female XLR input connectors are provided.
P. TRS Input Jack (Standard PIP2
Module
One per channel; female TRS input jacks
are provided.
R. Ground Lift Switch (Standard PIP2
Module)
Isolates the input signal grounds from the
AC (chassis) ground to help prevent
ground loops.
Figure 4.3 Output Cover
page 14
Figure 4.4 International Output Binding Posts
Operation Manual
MA-5002VZ Power Amplifier
5 Advanced Features
and Options
NOTE: For detailed information about these
Crown amplifier features, please consult the
Crown Amplifier Application Guide, available on
the Crown website at www.crownaudio.com
5.1 Protection Systems
Your Crown amplifier provides extensive protection and
diagnostic capabilities, including ODEP and IOC.
5.1.1 Output Device Emulation Protection
(ODEP)
Crown invented ODEP to solve two long standing problems in amplifier design: To prevent amplifier shutdown
during demanding operation and to increase the efficiency
of output circuitry.
To do this, Crown established a rigorous program to
measure the safe operating area (SOA) of each output transistor before installing it in an amplifier. Crown also
designed intelligent circuitry to simulate the instantaneous
operating conditions of those output transistors. Its name
describes what it does: Output Device Emulation Protection or ODEP. It not only simulates the operation of the
output transistors but it also compares their operation to
their known SOA. If ODEP sees that more power is about to
be asked of the output devices than they are capable of
delivering under the present conditions, ODEP immediately limits the drive level until it falls within the SOA.
Limiting is proportional and kept to an absolute minimum—only what is required to prevent the possibility of
output transistor damage.
This level of protection enables Crown to increase output
transistor utilization while greatly increasing amplifier reliability.
Finally, this onboard intelligence is monitored in two ways.
First, the front panel ODEP indicators show whether the
amplifier is functioning correctly or if ODEP is limiting the
drive level. Second, ODEP data is fed to the PIP connector
at the back of the amplifier so advanced PIP modules like
the IQ-PIP-USP2 can use it to make decisions and control
the amplifier.
With ODEP you get the maximum power with the maximum protection—the show goes on!
Operation Manual
5.1.2 IOC (Input Output Comparator)
The IOC circuit compares the output signal of the amplifier
with the input signal. If there is any difference other than
gain, then it is considered distortion and the indicator
comes on. The LED indicator will come on whenever there
is distortion of 0.05% or more. An IOC condition may also
be sensed by an IQ PIP module installed in PIP-compatible amplifiers.
IOC is designed to report any form of distortion. IOC not
only checks the waveform for distortion, but also reports
input overload and even a protective action that mutes or
shuts down an amplifier. With all of these features, IOC
monitors the entire amplifier. When the IOC indicator is off
the amplifier is definitely operational and undistorted. IOC
provides an on-line proof of performance.
5.2 Circuit Designs
5.2.1 Grounded Bridge
Grounded Bridge is the name of Crown's unique fourquadrant amplifier topology. The Grounded Bridge topology takes full advantage of the power supplies delivering
peak-to-peak voltages to the load that are twice the voltage
seen by the output devices and twice the voltage generated
by the power supplies.
The power supply bridge rectifier is not ground referenced,
and the transformer secondary is not center-tapped. This
allows the power supply to deliver +VCC and -VCC from
the same bridge rectifier and filter as a total difference in
potential regardless of their voltages with respect to
ground.
Composite output devices are arranged to function as
gigantic NPN and PNP devices. Each output stage has two
composite NPN and two composite PNP devices. The
devices connected to the load are referred to as “high-side
NPN and PNP” and the devices connected to ground are
referred to as “low-side NPN and PNP.” Positive current is
delivered to the load by increasing conductance simultaneously in the high-side NPN and low-side PNP stage,
while decreasing conductance of the high-side PNP and
low-side NPN in synchrony.
5.2.2 Variable Impedance (VZ)
VZ is the name of Crown's patented articulated power
supply technology. This innovative technology permits us
to pack large amounts of power into a compact package
while achieving ultra-low distortion and without generating excessive heat.
An amplifier power supply must be large enough to handle
both the maximum voltage and maximum current necesary
for the amplifier to drive its rated power into a specified
load. In order to meet this requirement, most conventional
supplies are heavy, large, and produce lots of heat. In
contrast, the VZ supply gets more current AND voltage out
of a smaller, lighter, and more efficient package by dynamically adapting to both signal and load requirements in
real-time. This provides the best power match to the
widest range of loads.
The VZ supply is divided into two segments. When the
output stage requires high-voltage, the segments are
arranged in series to deliver twice the voltage of a single
segment. When the output stage requires high-current, the
segments are arranged in parallel to deliver twice the
current of a single segment. Sensing circuitry "watches"
the voltage of the signal to determine when to switch VZ
modes. The switching circuitry is designed to prevent
audible switching distortion to yield the highest possible
dynamic transfer function—you hear only the music and
not the amplifier.
With VZ, you get not only maximum power and safety, but
you also get the best power matching to your load.
The VZ (Variable Impedance) mode causes the power
supplies to automatically shift between high-current and
low-current modes of operation as operating conditions
change. Normally, the power supplies operate in the highcurrent (low-impedance) mode for maximum thermal efficiency. When voltage demand reaches highs levels, the
supplies quickly shift into high-voltage (high-impedance)
mode. Because voltage and current requirements vary with
the output level and frequency content of the source
signals, the power supplies are designed to be able to
continually switch between the two modes as needed with
no degradation to the audio signal.
Crown's Grounded Bridge design delivers large voltage
swings without stressing output transistors. The results
are higher efficiency, lower distortion and superior reliablility.
page 15
MA-5002VZ Power Amplifier
5 Advanced Features
and Options
The VZ Mode switches allow you to control the operation of the VZ power supply for each channel.
The VZ mode switches are located inside the amplifier
behind the top dust filter on the front panel. To access
these switches, remove the top filter element. Always
turn the power off before changing one of these
switches. Each switch has four settings (from left to
right): VZ-ODEP, Lock Low, VZ and VZ. Note: The third
and fourth positions are identical. The amplifier is shipped
from the factory with the switches set to "VZ-ODEP”.
The VZ (Variable Impedance) mode causes the power
supplies to automatically shift between high-current and
low-current modes of operation as operating conditions
change. Normally, the power supplies operate in the highcurrent (low-impedance) mode for maximum thermal efficiency. When voltage demand reaches highs levels, the
supplies quickly shift into high-voltage (high-impedance)
mode. Because voltage and current requirements vary with
the output level and frequency content of the source
signals, the power supplies are designed to be able to
continually switch between the two modes as needed with
no degradation to the audio signal.
The VZ-ODEP mode is very similar to VZ mode. The
only difference is that the power supplies are forced into
high-current mode when ODEP is close to activating its
limiting circuitry. This reduces excessive stress on the
output transistors, and effectively increases the thermal
performance of the amplifier.
Note: When ODEP limiting begins, the IOC circuitry will
see that the input waveform does not match the output
waveform, and an error signal is generated. If the
compressors are on, they will see the error signal and
compress the input signal to correct the problem. When
this happens, there is no audible signal degradation.
Compression is subtle, and not noticeable unless the
system is driven to extremely high levels.
The Lock Low mode locks the power supplies into the
high-current mode for low-impedance loads. This may be
desirable when driving high-frequency transducers that
must be protected from too much voltage, or when driving
loads with very low impedances.
5.2.3 ILoad/ILimit
The ILoad/ILimit feature is designed to help you get the
maximum power out of your amplifier. In the real world,
loudspeaker impedance varies with frequency, and loudspeaker impedance ratings are only approximations. Without ILoad/ILimit, you have to do some lengthy calculations
to approximate the maximum number of loudspeakers you
can drive with the amplifier—and this does not allow for a
4 ohm loudspeaker whose impedance drops below 2 ohms
at 80 Hz.
This is why your amplifier has ILoad/ILimit. The ILoad
function turns a channel’s ILoad/ILimit indicator green
when it senses current is flowing to the load. The ILimit
function turns the indicator red when it reaches maximum
current output. This makes it possible to connect real
loudspeakers and conduct realistic tests to find the maximum number of loudspeakers that should be connected.
To do a test like this, you can operate under worst-case
conditions and continue to connect additional loudspeakers in parallel with each output until the ILoad/ILimit indicator turns red. The optimum load is achieved before the
ILoad/ILimit indicator turns red, so disconnecting the last
added loudspeaker gives you an optimized load.
5.2.4 Loudspeaker Offset Integration
Loudspeaker Offset Integration (LOI) circuits use double
integrating filters in the amplifier’s feedback circuitry to
protect loudspeakers in several different ways. First, they
center asymmetrical audio waveforms that cause off-center
woofer cone movement. Off-center cone movement
increases loudspeaker heating and distortion while reducing the loudspeaker’s power handling ability. Second, LOI
filters unwanted DC and subsonic frequencies using a
third-order Butterworth filter with a 35 Hz corner
frequency. Third, LOI filters unwanted ultrasonic frequencies (RF) that can cause tweeter burnout using a secondorder Bessel filter with a 50 kHz corner frequency.
IMPORTANT: The Loudspeaker Offset Integration
circuitry does NOT protect loudspeakers from
large transient voltages or excessive power
levels for prolonged periods of time. Crown is not
liable for damage or personal injury that results from overdriving loudspeakers or other system components. For
information on techniques to protect loudspeakers, refer to
the Crown Amplifier Application Guide, available online at
www.crownaudio.com.
5.3 Options
5.3.1 PIP™ 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 features ranging from errordriven compressor/limiters to IQ control. Your amplifier is
a PIP2 amplifier, which means it can take advantage of the
many advanced features found in PIP2 modules, as well as
all standard PIP modules. Visit the Crown website at
www.crownaudio.com, or contact Crown Customer
Service, for descriptions of available PIP and PIP2
modules.
Figure 5.1 Channel 1 VZ Mode Switch (Behind Filter)
page 16
Operation Manual
MA-5002VZ Power Amplifier
6 Troubleshooting
CONDITION: Normal operation.
CONDITION: No power to the amplifier.
POSSIBLE REASON:
POSSIBLE REASON:
• This is normal operation for your amp.
•
The amplifier's Power switch is off.
•
The amplifier is not plugged into the power
receptacle.
•
The amplifier's low-voltage power supply fuse
has blown. Return amp to Crown or an
authorized Crown Service Center for
servicing.
• The amp is set for Parallel Mono mode.
CONDITION: No sound.
CONDITION: Distorted sound.
POSSIBLE REASON:
•
•
•
Input signal level is too high. Turn down
your amplifier level controls. NOTE: Your
amplifier should never be operated at a
level which causes the Signal/IOC LEDs
to constantly indicate an IOC condition.
ODEP limiting has been activated. Take
appropriate measures to keep the ampifier
out of ODEP limiting (see Section 5.1.1 for
more information about ODEP).
Output current is being limited because the
load impedance of the channel is too low,
or the output is shorted.
POSSIBLE REASON:
•
The amplifier has just been turned on and is
still in the 4-second turn-on delay.
•
The amplifier is being held in Standby Mode
by an installed IQ PIP module.
•
The amplifier is in drive protection mode.
This can occur with improper source signals like infrasonic square waves or input
overloads that excessively clip the input
signal.
•
No input signal
•
Input signal level is very low.
•
Level controls are turned down.
Key
Operation Manual
page 17
MA-5002VZ Power Amplifier
7 Specifications
Minimum Guaranteed Power (see page 20 for complete power specifications)
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.
2,500
2,000
1,300
120 VAC, 60 Hz Units, Bridge Mono mode
1 kHz with 0.1% THD
4 ohms
8 ohms
16 ohms
5,000
4,000
2,600
120 VAC, 60 Hz Units, Parallel Mono mode
1 kHz with 0.1% THD
1 ohm
2 ohms
4 ohms
5,000
3,700
2,600
Performance
Frequency Response
(at 1 watt, 20Hz - 20 kHz) see Figure 7.3
± 0.1 dB
Phase Response
(at 1 watt, 10Hz - 20 kHz) see Figure 7.6
±10°
Signal to Noise Ratio below full bandwidth power
20 Hz to 20 kHz
A-weighted
> 100 dB
> 105 dB
Total Harmonic Distortion (THD)
at rated power, true THD
< 0.05%
Intermodulation Distortion (IMD)
60 Hz and 7 kHz at 4:1,from rated power to 35 dB below rated power at 8 ohms
< 0.05%
Damping Factor
10 Hz to 400 Hz See Figure 7.4
> 1000
Controlled Slew Rate
> 30 volts/µs
Crosstalk
See Figure 7.7
Input Impedance nominally balanced, nominally unbalanced
20 k ohms, 10 k ohms
page 18
Operation Manual
MA-5002VZ Power Amplifier
7 Specifications
Performance (continued)
Output Impedance
See Figure 7.5
Load Impedance (Note: Safe with all types of loads)
Stereo
Bridge Mono
Parallel Mono
2-8 ohms
4-16 ohms
1-4 ohms
Voltage Gain (8-ohm load, rated output at 1 kHz, maximum level setting)
0.775V sensitivity
1.4V sensitivity
26 dB sensitivity
132:1 ±6% or 42 dB ±0.5 dB
71:1 ±6% or 37 dB ±0.5 dB
20:1 ±6% or 26 dB ±0.5 dB
Required AC Mains
50 or 60 Hz; 100-, 120-, 208-, 230-, 240-VAC (±10%).
Power Draw at Idle
90 watts or less
Construction
Cooling
Dimensions
Width
Height
Depth (behind mounting surface)
Internal heat sinks with on-demand, proportional forced-air
cooling controlled by ODEP. Includes custom heat diffusers
and patented circuitry to promote uniform dissipation.
EIA Standard 19-inch rack mount (EIA RS-310-B)
5.25 inch (13.3 cm)
15.875 inch (40.3 cm)
Weight
Center of gravity is 6 inches (15.2 cm) behind the front mounting surface.
Net
Shipping
Operation Manual
77 pounds, 9 ounces (35.2 kg)
88 pounds, 10 ounces (40.2 kg)
page 19
MA-5002VZ Power Amplifier
7 Specifications
Macro-Tech 5002VZ – Maximum Power (Watts)
Parallel-Mono
Stereo
100 VAC, 50 Hz
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
Stereo
230 VAC, 50 Hz
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
1 kHz
2155
2325
4
2000
1775
1995
1865
8
1300
1090
1295
1295
4
5000
8
4000
3670
3970
3790
16
2600
1875
2550
2570
1
5000
4945
2
3700
3700
3790
4
2600
2570
2580
1 kHz
Stereo-Mono
Mode
20Hz-20kHz
Stereo
1030
4875
2
2375
4
1865
1740
1835
1770
8
1250
1065
1235
1230
4
4725
2035
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
2340
Stereo
1015
4670
8
3700
3355
3650
3635
16
2490
2120
2425
2455
1
4695
4630
2
3730
3675
3470
4
2490
2465
2455
2
2525
2430
4
1985
1760
1965
8
1310
1070
1285
4
5070
8
3935
3525
3910
16
2645
2150
2600
1
5085
5025
2
3960
3920
4
2635
2615
2015
(both channels
driven)
Bridge-Mono
(balanced output)
Parallel-Mono
Stereo
1240
2605
(both channels
driven)
1015
5025
Figure 7.1 Minimum Power Matrix
page 20
At 0.1% THD
(See note 4)
1985
Bridge-Mono
(balanced output)
Parallel-Mono
2605
Load (Ohms)
20Hz-20kHz
2500
At 0.05% THD
(See note 3)
AC Mains
1 kHz
2
At 0.1% THD
(See note 2)
120 VAC, 60 Hz
120 VAC, 60 Hz
Bridge-Mono
(balanced output)
At 0.1% THD
(See note 1)
100 VAC, 50 Hz
Stereo
(both channels
driven)
FTC Continuous Average
230 VAC, 50 Hz
Stereo-Mono
Mode
Maximum Average
Load (Ohms)
AC Mains
Macro-Tech 5002VZ – Minimum Guaranteed Power (Watts)
Single Cycle Tone Burst
40 Millisecond Tone Burst
At less than 0.05% THD
(See note 1)
At 0.05% THD
(See note 2)
20 Hz
50 Hz
1 kHz
7 kHz
50 Hz
1 kHz
7 kHz
2
2285
3070
3195
2460
2825
2505
2440
4
1820
2310
3220
1530
2100
1940
1510
8
1305
1440
1760
1330
1270
870
4
4905
6400
6605
4815
5750
5320
4815
3135
4455
4070
3100
2770
2670
1815
8
4280
5035
6780
16
2770
3000
3695
1
4910
6765
6925
4550
5925
5285
4505
2
3885
5005
6740
2975
4425
4045
2975
4
2720
3025
3660
2770
2670
1795
2
2305
3040
3085
2060
2870
2415
2040
4
1835
2380
3305
1280
2080
1895
1280
8
1245
1470
1800
1340
1265
740
4
4635
6030
6125
3985
5935
4845
3945
2540
4255
3805
2540
2740
2545
1485
8
3685
4820
6670
16
2495
2940
3620
1
4600
6300
6455
4090
5705
4865
4050
2
3660
4785
6615
2560
4310
3820
2560
4
2490
2990
3595
2685
2565
1515
2
2350
2930
3000
2125
2905
2545
2125
4
1845
2380
3205
1300
2210
1925
1300
8
1235
1425
1740
1365
1270
740
4
4995
6060
6155
4155
6060
5310
4155
2615
4615
4060
2615
2865
2665
1535
8
3900
5065
6695
16
2590
2995
3655
1
4865
6250
6450
4345
6145
5275
4305
2
3865
4930
6635
2690
4485
4025
2690
4
2570
3025
3630
2795
2670
1560
Figure 7.2 Maximum Power Matrix
Operation Manual
MA-5002VZ Power Amplifier
7 Specifications
Figure 7.3 Typical
Frequency Response
Figure 7.6 Typical
Phase Response
+45˚
DEGREES
0˚
–45˚
Figure 7.4 Typical
Damping Factor
100
1K
10 K
20 K
FREQUENCY (Hz)
DAMPING FACTOR
Figure 7.7 Typical
Crosstalk
–44
–50
–56
Figure 7.5 Typical
Output Impedance
–62
dB
–68
–74
–80
100
1K
10 K
20 K
FREQUENCY (Hz)
Operation Manual
page 21
MA-5002VZ Power Amplifier
8 Service
Crown amplifiers are quality units that rarely
require servicing. Before returning your unit for
servicing, please contact Crown Technical Support to verify the need for servicing.
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.
8.1 Worldwide Service
Service may be obtained from an authorized
service center. (Contact your local Crown/
Amcron representative or our office for a list of
authorized service centers.) To obtain service,
simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center. They will handle the
necessary paperwork and repair.
Remember to transport your unit in the original
factory pack.
8.2 US and Canada Service
Service may be obtained in one of two ways:
from an authorized service center or from the
factory. You may choose either. It is important
that you have your copy of the bill of sale as
your proof of purchase.
8.2.1 Service at a US or Canada
Service Center
This method usually saves the most time and
effort. Simply present your bill of sale along
with the defective unit to an authorized service
center to obtain service. They will handle the
necessary paperwork and repair. Remember to
transport the unit in the original factory pack. A
list of authorized service centers in your area
can be obtained from our Technical Support
Group.
page 22
8.2.2 Factory Service
To obtain factory service, fill out the service
information page found in the back of this manual and send it along with your proof of purchase and the defective unit to the Crown
factory.
For warranty service, we will pay for ground
shipping both ways in the United States. Contact Crown Factory Service or Technical Support to obtain prepaid shipping labels prior to
sending the unit. Or, if you prefer, you may prepay the cost of shipping, and Crown will reimburse you. Send copies of the shipping receipts
to Crown to receive reimbursement.
Your repaired unit will be returned via UPS
ground. Please contact us if other arrangements are required.
securely seal the package with an adequate
carton sealing tape. Do not use light boxes
or “peanuts.” Damage caused by poor
packing cannot be covered under warranty.
4. Do not ship the unit in any kind of cabinet
(wood or metal). Ignoring this warning
may result in extensive damage to the unit
and the cabinet. Accessories are not
needed—do not send the product documentation, cables and other hardware.
If you have any questions, please call or write
Crown Factory Service.
Crown Factory Service
1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
8.2.3 Factory Service Shipping
Instructions:
1. Before sending a Crown product to the
factory for service, first call the Crown Service Department for a return authorization
(RA) number.
Telephone: 574-294-8200
800-342-6939 (North America,
Puerto Rico, and Virgin Islands only)
2. Be sure to fill out the service information
form that follows and enclose it with your
shipment, either inside the box or in a
packing slip envelope securely attached to
the outside of the shipping carton. Do not
send the service information form separately.
Internet:
http://www.crownaudio.com
Facsimile:
574-294-8301 (Technical Support)
574-294-8124 (Factory Service)
3. To ensure the safe transportation of your
unit to the factory, ship it in an original
factory packing container. If you don’t have
the original carton, you may obtain a product service foam-in-place shipping pack
from the Crown Factory Service Department at the number listed below. For nonwarranty service, you may also provide
your own shipping pack. Minimum recommended requirements for materials are as
follows: 275 P.S.I. burst test Double-Wall
carton that allows for 2-inch solid Styrofoam on all six sides of unit or 3 inches of
plastic bubble wrap on all six sides of unit;
Operation Manual
MA-5002VZ Power Amplifier
9 Warranty
UNITED STATES & CANADA
SUMMARY OF WARRANTY
3
AR
YE
Crown International, 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 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. We further
warrant the new Crown product regardless of the
reason for failure, except as excluded 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
Warranty Period. It does not cover any product
which has been damaged because of any intentional misuse, accident, negligence, or loss which
is covered under any of your insurance contracts.
This Crown Warranty also does not extend to the
new Crown product if the serial number has been
defaced, altered, or removed.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the reason for failure (except as excluded), by repair,
replacement, or refund. We may not elect refund
unless you agree, or unless we are unable to provide replacement, and repair is not practical or
cannot be timely made. If a refund is elected, then
you must make the defective or malfunctioning
product available to us free and clear of all liens
or other encumbrances. The refund will be equal
to the actual purchase price, not including inter-
Operation Manual
est, insurance, closing costs, and other finance
charges less a reasonable depreciation on the
product from the date of original purchase. Warranty work can only be performed at our authorized service centers or at the factory. Warranty
work for some products can only be performed at
our factory. We will remedy the defect and ship
the product from the service center or our factory
within a reasonable time after receipt of the defective product at our authorized service center or
our factory. All expenses in remedying the defect,
including surface shipping costs in the United
States, will be borne by us. (You must bear the
expense of shipping the product between any foreign country and the port of entry in the United
States including the return shipment, and all
taxes, duties, and other customs fees for such foreign shipments.)
FROM ANY DEFECT IN THE NEW CROWN
PRODUCT. THIS INCLUDES ANY DAMAGE TO
ANOTHER PRODUCT OR PRODUCTS RESULTING FROM SUCH A DEFECT. SOME STATES DO
NOT ALLOW THE EXCLUSION OR LIMITATIONS
OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
HOW TO OBTAIN WARRANTY
SERVICE
DESIGN CHANGES
You must notify us of your need for warranty service within the warranty period. All components
must be shipped in a factory pack, which, if
needed, may be obtained from us free of charge.
Corrective action will be taken within a reasonable time of the date of receipt of the defective
product by us or our authorized service center. If
the repairs made by us or our authorized service
center are not satisfactory, notify us or our authorized service center immediately.
DISCLAIMER OF CONSEQUENTIAL
AND INCIDENTAL DAMAGES
YOU ARE NOT ENTITLED TO RECOVER FROM
US ANY INCIDENTAL DAMAGES RESULTING
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or
modify this Crown Warranty. This Crown Warranty is not extended by the length of time which
you are deprived of the use of the new Crown
product. Repairs and replacement parts provided
under the terms of this Crown Warranty shall
carry only the unexpired portion of this Crown
Warranty.
We reserve the right to change the design of any
product from time to time without notice and with
no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
THIS CROWN WARRANTY GIVES YOU SPECIFIC
LEGAL RIGHTS, YOU MAY ALSO HAVE OTHER
RIGHTS WHICH VARY FROM STATE TO STATE.
No action to enforce this Crown Warranty shall be
commenced after expiration of the warranty
period.
THIS STATEMENT OF WARRANTY SUPERSEDES
ANY OTHERS CONTAINED IN THIS MANUAL
FOR CROWN PRODUCTS. 12/01
page 23
MA-5002VZ Power Amplifier
9 Warranty
3
AR
YE
WORLDWIDE EXCEPT USA & CANADA
SUMMARY OF WARRANTY
Crown International, 1718 West Mishawaka Road,
Elkhart, Indiana 46517-4095 U.S.A. warrants to
you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown1 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, and we further warrant the new Crown product regardless 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 CROWNWARRANTY
This Crown Warranty is in effect only for failure of
a new Crown product which occurred within the
Warranty Period. It does not cover any product
which has been damaged because of any intentional misuse, accident, negligence, or loss which
is covered under any of your insurance contracts.
This Crown Warranty also does not extend to the
new Crown product if the serial number has been
defaced, altered, or removed.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the reason for failure (except as excluded), by repair,
replacement, or refund. We may not elect refund
page 24
unless you agree, or unless we are unable to provide replacement, and repair is not practical or
cannot be timely made. If a refund is elected, then
you must make the defective or malfunctioning
product available to us free and clear of all liens
or other encumbrances. The refund will be equal
to the actual purchase price, not including interest, insurance, closing costs, and other finance
charges less a reasonable depreciation on the
product from the date of original purchase. Warranty work can only be performed at our authorized service centers. We will remedy the defect
and ship the product from the service center
within a reasonable time after receipt of the defective product at our authorized service center.
HOW TO OBTAIN WARRANTY SERVICE
You must notify your local Crown importer of
your need for warranty service within the warranty
period. All components must be shipped in the
original box. Corrective action will be taken within
a reasonable time of the date of receipt of the
defective product by our authorized service center.
If the repairs made by our authorized service center are not satisfactory, notify our authorized service center immediately.
DISCLAIMER OF CONSEQUENTIAL AND
INCIDENTAL DAMAGES
YOU ARE NOT ENTITLED TO RECOVER FROM US
ANY INCIDENTAL DAMAGES RESULTING FROM
ANY DEFECT IN THE NEW CROWN PRODUCT.
THIS INCLUDES ANY DAMAGE TO ANOTHER
PRODUCT OR PRODUCTS RESULTING FROM
SUCH A DEFECT.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or
modify this Crown Warranty. This Crown Warranty
is not extended by the length of time which you are
deprived of the use of the new Crown product.
Repairs and replacement parts provided under the
terms of this Crown Warranty shall carry only the
unexpired portion of this Crown Warranty.
DESIGN CHANGES
We reserve the right to change the design of any
product from time to time without notice and with
no obligation to make corresponding changes in
products previously manufactured.
LEGAL REMEDIES OF PURCHASER
No action to enforce this Crown Warranty shall be
commenced after expiration of the warranty
period.
THIS STATEMENT OF WARRANTY SUPERSEDES
ANY OTHERS CONTAINED IN THIS MANUAL FOR
CROWN PRODUCTS. 7/01
Operation Manual
MA-5002VZ Power Amplifier
Crown Factory Service Information
Shipping Address: Crown Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517
Phone: 1-800-342-6939 or 1-574-294-8200 Fax: 1-574-294-8124
Owner’s Name : ________________________________________________________________________________________________________________________________________________________________
Shipping Address: ______________________________________________________________________________________________________________________________________________________________
Phone____________________________________Fax Number: ____________________________________Email_________________________________________________________________________________
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.)
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
Other equipment in system: _________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________
If warranty has expired, payment will be: ! Cash/Check
! Visa
! Master Card
! C.O.D.
Card Number:___________________________________
! Purchase Order for Crown Dealer
Exp. Date:___________________
Signature:______________________________________________________________________
ENCLOSE THIS PORTION WITH THE UNIT. DO NOT MAIL SEPARATELY.
Operation Manual
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MA-5002VZ Power Amplifier
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page 26
Operation Manual
MA-5002VZ Power Amplifier
NOTES
Operation Manual
page 27
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