D Series
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30 |
CHANNEL 1 |
CHANNEL 2 |
30 |
OFF |
ON |
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40 |
20 |
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40 |
20 |
D-45 |
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50 |
10 |
IOC |
50 |
10 |
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HEADPHONES |
LEVEL |
0 |
SIGNAL |
LEVEL |
0 |
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POWER |
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Operation Manual
D-75A
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Crown, Crown Audio, Amcron and IOC are registered trademarks of Crown International. Other trademarks are the property of their respective owners.
Some models may be exported under the name Amcron.®
©2006 by Crown Audio® Inc., 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
125243-9
2/06
D Series Power Amplifiers
Important Safety Instructions
1)Read these instructions.
2)Keep these instructions.
3)Heed all warnings.
4)Follow all instructions.
5)Do not use this apparatus near water.
6)Clean only with a dry cloth.
7)Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8)Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9)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.
10)Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11)Only use attachments/accessories specified by the manufacturer.
12)Use only with a cart, stand, tripod, 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.
13)Unplug this apparatus during lightning storms or when unused for long periods of time.
14)Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply 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.
15)WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
16)DO NOT EXPOSE TO DRIPPING OR SPLASHING. DO NOT PLACE OBJECTS FILLED WITH LIQUID, SUCH AS VASES, ON THIS APPARATUS.
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.
POUR DÉMONTER COMPLÈTEMENT L'ÉQUIPEMENT DE L'ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE D'ALIMENTATION DE SON RÉCEPTACLE. LA PRISE D'ALIMENTATION RESTERA AISÉMENT FONCTIONNELLE.
PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALIMENTACION DE LA TOMA DE CA. LAS PATAS DEL CONECTOR DEL CABLE DE ALIMENTACIÓN DEBERAN MANTENERSE EN BUEN ESTADO.
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.
PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES QUE PUEDAN SER REPARADAS POR EL USUARIO AL INTERIOR. REMITA EL SERVICICO AL PERSONAL TÉCHNICAL CALIFICADO.
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.
REGARDEZ CES SYMBOLES
La triangle avec le sigle ‘’foudre’’ est employée pour alerter l'utilisateur au risque de décharge électrique. Le triangle avec un point d'exclamation est employée pour alerter l'utilisateur d’instruction importantes pour lors opérations de maintenance.
ATENCION CON ESTOS SÍMBOLOS
El triángulo con el símbolo de rayo eléctrico es usado para alertar al usuario de el riesgo de un choque eléctrico.
El triángulo con el signo de admiración es usado para alertar al usuario de instrucciones importantes de operación o mantenimiento.
IMPORTANT
D Series amplifiers require Class 2 output wiring.
Les amplificateurs de série de D exigent des câbles de sortie de classe 2.
D-Reihe-Verstärker verlangen Klasse die 2 Produktionsverdrahtung.
Los amplificadores de la Serie D requieren de un cableado de salida Clase 2.
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.
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 compliance could void the user’s authority to operate the equipment.
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.
page 2 |
Operation Manual |
D Series Power Amplifiers
Crown International, Inc.
DECLARATION of CONFORMITY
Issued By: Crown International, Inc. |
COMPLIANCE QUESTIONS ONLY: Sue Whitfield |
1718 W. Mishawaka Road |
574-294-8289 |
Elkhart, Indiana 46517 U.S.A. |
swhitfield@crownintl.com |
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European Representative's Name and Address: |
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Nick Owen |
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35, Bassets Field |
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Thornhill |
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Cardiff. South Glamorgen |
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CF14 9UG United Kingdom |
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Equipment Type: Commercial Audio Power Amplifiers |
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Family Name: D Family |
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Model Names: D-45, D-75A |
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EMC Standards:
EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 20 cm
EN 61000-3-2:2001 Limits for Harmonic Current Emissions (equipment input current less than or equal to 16 A per phase)
EN 61000-3-3:2002 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current less than or equal to16A
EN 55022:2003 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class A
EN 55103-2:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:2001 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:2001 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A)
EN 61000-4-4:2001 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:2001 Surge Immunity (Criteria B)
EN 61000-4-6:2003 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:2001 Voltage Dips, Short Interruptions and Voltage Variation
Safety Standard:
IEC 60065: 2001 7th Ed. 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 |
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Larry Coburn |
Date of Issue: Jan. 1, 2006 |
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Title: Senior Vice President of Manufacturing |
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Operation Manual |
DUE TO LINE CURRENT HARMONICS, WE RECOMMEND THAT YOU CONTACT YOUR SUPPLY AUTHORITY BEFORE CONNECTION. |
page 3 |
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D Series Power Amplifiers
Table of Contents
Important Safety Instructions ....................................................... |
2 |
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3.4 Controls .......................................................................... |
12 |
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Declaration of Conformity ............................................................ |
3 |
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3.5 Fuse Replacement ........................................................... |
12 |
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1 Welcome ..................................................... |
5 |
4 |
Advanced Features and Options ......................... |
13 |
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1.1 |
Features ........................................................................... |
5 |
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4.1 Protection ....................................................................... |
13 |
1.2 |
How to Use This Manual .................................................. |
5 |
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4.2 Options ........................................................................... |
13 |
2 Setup ......................................................... |
6 |
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4.2.1 Bridge-Mono Option .............................................. |
13 |
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2.1 |
Unpack Your Amplifier...................................................... |
6 |
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4.2.2 Input-Sensitivity Option .......................................... |
13 |
2.2 |
Install Your Amplifier ....................................................... |
6 |
5 |
Troubleshooting ............................................ |
14 |
2.3 |
Ensure Proper Cooling .................................................... |
6 |
6 |
Specifications .............................................. |
15 |
2.4 |
Choose Input Wire and Connectors ................................. |
7 |
7 |
Service ....................................................... |
17 |
2.5 |
Choose Output Wire and Connectors ............................... |
7 |
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7.1 International and Canada Service .................................... |
17 |
2.6 |
Wire Your System ............................................................ |
8 |
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7.2 US Service ....................................................................... |
17 |
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2.6.1 Dual Mode .............................................................. |
8 |
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7.2.1 Service at a US Service Center ............................... |
17 |
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2.6.2 Bridge-Mono Mode ................................................ |
8 |
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7.2.2 Factory Service ....................................................... |
17 |
2.7 |
Connect to AC Mains ....................................................... |
9 |
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7.2.3 Factory Service Shipping Instructions ..................... |
17 |
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2.7.1 AC Mains Voltage Configuration ............................ |
9 |
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7.2.4 Packing Instructions................................................ |
17 |
2.8 |
Startup Procedure ............................................................ |
9 |
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7.2.5 Estimate Approval.................................................... |
17 |
3 Operation .................................................... |
10 |
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7.2.6 Payment of Non-Warranty Repairs........................... |
17 |
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3.1 |
Precautions ...................................................................... |
10 |
8 |
Warranty ..................................................... |
18 |
3.2 |
Controls, Indicators and Connectors ............................... |
11 |
Product Registration..................................................................... |
21 |
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3.3 |
Indicators ......................................................................... |
12 |
Crown Factory Service Information Form .................................... |
23 |
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page 4 |
Operation Manual |
D Series Power Amplifiers
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30 |
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30 |
OFF |
ON |
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CHANNEL 1 |
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CHANNEL 2 |
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40 |
20 |
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40 |
20 |
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50 |
10 |
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50 |
10 |
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0 |
IOC |
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0 |
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HEADPHONES |
SIGNAL |
LEVEL |
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LEVEL |
POWER |
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1 Welcome
Reliability is the first thing you get with your purchase of a Crown® power amplifier. The D- 45 and D-75A both deliver dependable operation with a wide variety of loads. Because of their exceptional reliability, these amplifiers have become the leading choice of professionals for use in recording studios, laboratories and public facilities. You can even find them on the road. Their sonic excellence also makes them a very good choice for your personal listening pleasure.
The D-45 and D-75A amplifiers are compact and provide ultra-low distortion for medium power applications. Crown’s advanced AB+B circuitry ensures efficient operation and protects against shorted, open, mismatched or low-impedance loads that can affect any amplifier’s performance.
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.
In addition, D Series amplifiers include 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.
1.1 Features
Your dual-channel (stereo) amplifier can optionally be configured to deliver double the power from a single (mono) channel. It also provides the following features:
•Powerful AB+B class circuitry yields maximum efficiency with minimum crossover “notch” distortion.
•IOC® (Input/Output Comparator) alerts of any distortion that exceeds 0.05% to provide proof of distortion-free performance.
•Signal presence indicators verify the presence of amplifier output.
•Detented level controls for precise repeatability.
•Ultra-low harmonic and intermodulation distortion result in the best dynamic transfer function in the industry.
•Very low noise and wide dynamic range.
•High damping factor provides exceptional loudspeaker motion control.
•Convection cooling system eliminates fan noise and maintenance.
•Mounts in a standard 19-inch (48.3-cm) rack.
•Front-panel headphone jack.
•Three Year, No-Fault, Fully-Transferable Warranty completely protects your investment and guarantees its specifications.
1.2 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.
Operation Manual |
page 5 |
D Series Power Amplifiers
2 Setup
2.1 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
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.
2.2 Install Your Amplifier
CAUTION: Before you begin, make sure your amplifier is disconnected from the power source, with the power switch in the “off” position and all level controls turned completely down (counterclockwise).
Use a standard 19-inch (48.3 cm) equipment rack (EIA RS-310B). See Figure 2.1 for amplifier dimensions.
You may also stack amps without using a cabinet.
NOTE: When transporting, amplifiers should be supported at the front.
Figure 2.1 D-45 and D-75A Dimensions
page 6
2.3 Ensure Proper Cooling
When using an equipment rack, do not mount units directly on top of each other. Allow some air space between units for convection cooling. 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 2.2 illustrates D Series amplifier installation.
Figure 2.2 Installation
Operation Manual
D Series Power Amplifiers
2 Setup
2.4 Choose Input Wire and Connectors
Figure 2.3 shows connector pin assignments for balanced wiring, and Figure 2.4 shows connector pin assignments for unbalanced wiring.
NOTE: Custom wiring should only be performed by qualified personnel.
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Figure 2.3 Balanced |
Figure 2.4 Unbalanced |
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Input Connector |
Input Connector |
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Wiring |
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Wiring |
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2.5 Choose Output Wire and Connectors
Crown recommends using professionally constructed, high-
quality, twoor four-conductor, heavy gauge speaker wire and connectors. You may use terminal forks or bare wire for your output connectors (see Figure 2.5). To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable and connectors.
Using the guidelines below, select the appropriate size of wire based on the distance from amplifier to speaker.
Distance |
Wire Size |
up to 25 ft. |
16 AWG |
26-40 ft. |
14 AWG |
41-60 ft. |
12 AWG |
Over 60 ft. |
10 AWG |
CAUTION: Never use shielded cable for output wiring.
Figure 2.5 Output Connector Wiring
Operation Manual |
page 7 |
D Series Power Amplifiers
2Setup
2.6Wire Your System
2.6.1 Dual Mode
Typical input and output wiring is shown in Figure 2.5.
INPUTS: Connect input wiring for each channel.
OUTPUTS: Maintain proper polarity (+/-) on output connectors.
Connect Channel 1 positive (+) speaker load to Channel 1 positive terminal of amp; repeat for negative (-). Repeat each channel wiring as for Channel 1. Refer to Section 2.5 for output connector pin assignments.
2.6.2 Bridge-Mono Mode
Your amplifier is factory-configured for dual (stereo) operation. As an option, the unit can be configured for higher power, single-channel, bridge-mono mode by an authorized Crown Service Center. To prevent damage to the amplifier, do not operate the unit in bridge-mono mode without the Service Center modification.
Typical input and output wiring is shown in Figure 2.7.
INPUTS: Connect input wiring only to CH 1.
OUTPUTS: Connect the speaker across the positive output terminals. Do not use the negative terminals when the amplifier is being operated in Bridge-Mono mode.
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.
NOTE: When operating in Bridge-Mono mode, turn down (full CCW) the CH 2 level control. The CH 1 level control works both channels.
If your loudspeakers don’t need the additional voltage, and you only have one input signal to drive multiple loudspeakers, you can use bridge-mono mode without actually bridging the outputs. Bridge-mono mode is like dual mode except the channel 1 input feeds both outputs, and the channel 2 output is inverted. To use bridge-mono mode without bridging the outputs, wire your loudspeakers as you would for dual mode, but invert the polarity of the channel 2 output wiring (positive goes to negative, and negative goes to positive).
Figure 2.6
System Wiring
for Dual Mode
Figure 2.7
System Wiring for Bridge-Mono Mode
Do not wire the amplifier in bridge-mono mode without having it modified by an authorized Crown Service Center.
page 8 |
Operation Manual |
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