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D Series
30
30
OFF
ON
CHANNEL 1
CHANNEL 2
40
20
40
20
D-45
50
10
50
10
IOC
0
0
HEADPHONES
LEVEL
SIGNAL
LEVEL
POWER
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, 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.
©2004 by Crown Audio Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 574-294-8000
125243-7
2/04
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Table of Contents
Related Manuals for Crown D Series
Summary of Contents for Crown D Series
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Page 1: Operation Manual
Trademark Notice: Crown, 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. ©2004 by Crown Audio Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 574-294-8000 125243-7 2/04... -
Page 2: Important Safety Instructions
TIES SERVICEABLE À L’INTÉRIEUR. TOUS REPA- RATIONS DOIT ETRE FAIRE PAR PERSONNEL QUALIFIÉ SEULMENT. IMPORTANT D Series amplifiers require Class 2 output wiring. MAGNETIC FIELD CAUTION! Do not locate sensitive high-gain equip- ment such as preamplifiers or tape decks directly above or below the unit. -
Page 3: Declaration Of Conformity
D Series Power Amplifiers Crown International, Inc. Issued By: 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 Equipment Type: Commercial Audio Power Amplifiers... -
Page 4: Table Of Contents
2.7.1 AC Mains Voltage Configuration ...9 2.8 Startup Procedure ...9 3 Operation ... 10 3.1 Precautions ...10 page 4 D Series Power Amplifiers 3.2 Controls, Indicators and Connectors ...11 3.3 Indicators ...12 3.4 Controls ...12 3.5 Fuse Replacement ...12 4 Advanced Features and Options ... 13 4.1 Protection ...13... -
Page 5: Welcome
• High damping factor provides exceptional loudspeaker motion control. In addition, D Series amplifiers include a num- ber of features which require some explanation • Convection cooling system eliminates fan before they can be used to their maximum noise and maintenance. -
Page 6: Setup
(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... -
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. -
Page 8: Wire Your System
8 Figure 2.6 System Wiring for Dual Mode Do not wire the amplifier in bridge-mono mode without having it modified by an authorized Crown Service Center. Figure 2.7 System Wiring for Bridge-Mono Mode D Series Power Amplifiers Operation Manual... -
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
(full CCW) before listening through headphones; otherwise head- phone or hearing damage may result. page 10 D Series Power Amplifiers 5. WARNING: Never connect the output to a power supply, battery or power main. Electrical shock may result. 6. Tampering with the circuitry, or making unau- thorized circuit changes may be hazardous and invalidates all agency listings. -
Page 11: Controls, Indicators And Connectors
D Series Power Amplifiers 3 Operation 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... -
Page 12: Indicators
IMPORTANT: The 3AG and IEC fuses are different physical sizes and require dif- ferent holder caps. The 3AG and IEC fuses should not be exchanged even though they are the same value. D Series Power Amplifiers Figure 3.2 Indicators and Level Controls Operation Manual... -
Page 13: Advanced Features And Options
D Series Power Amplifiers 4 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. 4.1 Protection Your amplifier is protected against all common hazards that plague high-power amplifiers, including shorted, open or mismatched loads;... -
Page 14: Troubleshooting
Clip LED is off, the input signal is distorted. Check gain staging and output lev- els of the mixer or preamp. D Series Power Amplifiers CONDITION: No sound, even though the amp has power. Power LED is on and the amp is receiving an input signal. -
Page 15: Specifications
D Series Power Amplifiers 6 Specifications Minimum Guaranteed Power 120V/60 Hz Units, Dual mode, per channel, both channels driven 1 kHz with 0.1% THD 4 ohms 8 ohms 16 ohms 120V/60 Hz Units, Bridge mono mode 1 kHz with 0.1% THD... - Page 16 (See note 2) 20Hz-20kHz 1 kHz 1 kHz 20 Hz 50 Hz Figure 6.2 D-75A Power Matrix D Series Power Amplifiers 40 mS Tone Burst EIA Watts at Watts at < 0.05% THD 1% THD (See note 4) (See note 5)
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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
THIS STATEMENT OF WARRANTY SUPERSEDES DISCLAIMER OF CONSEQUEN- ANY OTHERS CONTAINED IN THIS MANUAL FOR TIAL AND INCIDENTAL DAMAGES CROWN PRODUCTS. YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING D Series Power Amplifiers 12/01 Operation Manual... - 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...
- Page 20 D Series Power Amplifiers NOTES page 20 Operation Manual...
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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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