Crown D-45 Operation Manual
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Crown D-45 Operation Manual

Crown audio inc., operation manual stereo amplifier d-45, d-75a d series
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Operation Manual

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, Amcron and IOC are registered trademarks of Crown International. Other trademarks are the property of
their respective owners.
D Series
30
30
CHANNEL 1
CHANNEL 2
40
20
40
20
50
10
50
10
IOC
0
0
HEADPHONES
SIGNAL
LEVEL
LEVEL
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
OFF
ON
D-45
POWER
D-75A
®
125243-6
2/03

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Summary of Contents for Crown D-45

  • Page 1: Operation Manual

    To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com. Trademark Notice: Crown, Amcron and IOC are registered trademarks of Crown International. Other trademarks are the property of their respective owners. ©2003 by Crown Audio Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 574-294-8000 D Series CHANNEL 1...

  • Page 2: Important Safety Instructions

    Important Safety Instructions 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 instruc- tions.

  • Page 3: Declaration Of Conformity

    CF23 8ND United Kingdom Equipment Type: Commercial Audio Power Amplifiers Family Name: D Family Model Names: D-45, D-75A 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...

  • Page 4: Table Of Contents

    Table of Contents Important Safety Instructions ...2 Declaration of Conformity ...3 1 Welcome ... 5 1.1 Features ...5 1.2 How to Use This Manual ...5 2 Setup ... 6 2.1 Unpack Your Amplifier...6 2.2 Install Your Amplifier ...6 2.3 Ensure Proper Cooling ...6 2.4 Choose Input Wire and Connectors ...7 2.5 Choose Output Wire and Connectors ...7 2.6 Wire Your System ...8...

  • Page 5: Welcome

    Reliability is the first thing you get with your purchase of a Crown power amplifier. The D-45 1.1 Features and D-75A both deliver dependable operation Your dual-channel (stereo) amplifier can with a wide variety of loads.

  • Page 6: Setup

    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 D Series Power Amplifiers 2.3 Ensure Proper Cooling When using an equipment rack, do not mount units directly on top of each other.

  • Page 7: Choose Input Wire And Connectors

    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 connec- tor pin assignments for unbalanced wiring. NOTE: Custom wiring should only be per- formed by qualified personnel. 2.5 Choose Output Wire and Connectors Crown recommends using professionally con-...

  • Page 8: Wire Your System

    2 Setup 2.6 Wire Your System 2.6.1 Dual Mode Typical input and output wiring is shown in Figure 2.6. INPUTS: Connect input wiring for each channel. OUTPUTS: Maintain proper polarity (+/-) on output connec- tors. Connect Channel 1 positive (+) speaker load to Channel 1 positive terminal of amp;...

  • Page 9: Connect To Ac Mains

    D Series Power Amplifiers 2 Setup 2.7 Connect to AC Mains Connect your amplifier to the AC mains power source (power outlet) with the supplied AC power cordset. WARNING: The third prong of this con- nector (ground) is an important safety feature.

  • Page 10: Operation

    3 Operation 3.1 Precautions Your amplifier is protected from internal and exter- nal faults, but you should still take the following precautions for optimum performance and safety: 1. Before use, your amplifier first must be config- ured for proper operation, including input and output wiring hookup.

  • Page 11: Controls, Indicators And Connectors

    3.2 Controls, Indicators and Con- nectors Figure Figure 3.1 shows the controls, indica- tors and connectors on the front panel and back panel of the D-75A. The D-45 layout is similar. Operation Manual WARNING: HEADPHONE JACK SUPPLIES FULL OUTPUT POWER AND MAY DAMAGE HEADPHONES OR CAUSE HEARING DAMAGE.

  • Page 12: Indicators

    3 Operation 3.3 Indicators Your amplifier has five front panel indicators. First, a power indicator behind the front panel becomes visible when the unit is turned on and has power. A signal indicator for each channel (Figure 3.2 ) flashes when there is output from the amplifier.

  • Page 13: Advanced Features And Options

    26 dB gain will be ideal. With this default setting, full output power is achieved with an input signal of 0.632 volts for the D-45, and 0.837 volts for the D-75A. Some applications may require the gain struc- ture to be calculated based on a sensitivity of 0.775 volts.

  • Page 14: Troubleshooting

    5 Troubleshooting page 14 CONDITION: Power indicator is off. POSSIBLE REASON • The amplifier has lost AC power. • The amplifier’s Power switch is off. • The amplifier is not plugged into the power receptacle. • The amplifier output level is so high that the power supply fuse has blown.

  • Page 15: Specifications

    Required AC Mains North American units International units Power Draw at Idle Cooling Dimensions: Width, Height, Depth Net Weight, Shipping Weight Operation Manual D-45 D D-455 ± 0.1 dB +10° to -15° 106 dB unweighted < 0.05% < 0.01% > 400 >100 dB...
  • Page 16 (See note 1) (See note 2) 20Hz-20kHz 1 kHz 1 kHz 20 Hz 50 Hz Figure 6.1 D-45 Power Matrix D-75A Max. Aver- Single-Cycle Tone Burst FTC Continuous age Power at Watts at < 0.05% THD Average Power at 0.1% THD 0.1% THD...

  • Page 17: Service

    D Series Power Amplifiers 7 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 techni- cian.

  • Page 18: Warranty

    8 Warranty SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB- SEQUENT 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.
  • Page 19 D Series Power Amplifiers 8 Warranty SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB- SEQUENT OWNER of each NEW Crown1 product, for a period of three (3) years from the date of pur- chase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship, and we...
  • Page 20 D Series Power Amplifiers NOTES page 20 Operation Manual...

  • Page 21: Crown Factory Service Information Form

    D Series Power Amplifiers Owner’s Name : ________________________________________________________________________________________________________________________________________________________________ Shipping Address: _______________________________________________________________________________________________________________________________________________________________ Phone Number: ________________________________Fax Number: ________________________________ Email ________________________________________________________________________________ Model: __________________________________________________________________________________ Serial Number: ________________________________________________________________________ Purchase Date : ________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ Other equipment in system: ___________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________________________________________________________...
  • Page 22 D Series Power Amplifiers THIS PAGE INTENTIONALLY LEFT BLANK page 22 Operation Manual...
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This manual is also suitable for:

D-75a

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